diff --git a/src/cmd/8g/gsubr.c b/src/cmd/8g/gsubr.c index 77a4532f03..6a48dfabd1 100755 --- a/src/cmd/8g/gsubr.c +++ b/src/cmd/8g/gsubr.c @@ -907,6 +907,8 @@ nodarg(Type *t, int fp) n->class = PPARAM; break; } + + n->typecheck = 1; return n; } diff --git a/src/cmd/gc/const.c b/src/cmd/gc/const.c index 8b4046bf53..bbbc8d7399 100644 --- a/src/cmd/gc/const.c +++ b/src/cmd/gc/const.c @@ -200,8 +200,6 @@ bad: defaultlit(&n, T); *np = n; } - yyerror("cannot convert %T constant to %T", n->type, t); - n->diag = 1; return; } @@ -336,6 +334,9 @@ evconst(Node *n) switch(n->op) { case OMAKE: + case OMAKEMAP: + case OMAKESLICE: + case OMAKECHAN: return; } @@ -557,7 +558,7 @@ evconst(Node *n) if(cmpslit(nl, nr) > 0) goto settrue; goto setfalse; - case TUP(OADD, CTSTR): + case TUP(OADDSTR, CTSTR): len = v.u.sval->len + nr->val.u.sval->len; str = mal(sizeof(*str) + len); str->len = len; @@ -605,6 +606,7 @@ unary: case TUP(OCONV, CTFLT): case TUP(OCONV, CTSTR): case TUP(OCONV, CTNIL): + case TUP(OARRAYBYTESTR, CTNIL): convlit1(&nl, n->type, 1); break; diff --git a/src/cmd/gc/dcl.c b/src/cmd/gc/dcl.c index 978d050267..d1802c83d3 100644 --- a/src/cmd/gc/dcl.c +++ b/src/cmd/gc/dcl.c @@ -672,9 +672,9 @@ funclit1(Node *ntype, NodeList *body) for(l=func->cvars; l; l=l->next) { a = l->n; d = oldname(a->sym); - addrescapes(d); args = list(args, nod(OADDR, d, N)); } + typechecklist(args, Erv); n = nod(OCALL, clos, N); n->list = args; @@ -1642,7 +1642,7 @@ embedded(Sym *s) NodeList* variter(NodeList *vl, Node *nt, NodeList *el) { - int doexpr; + int doexpr, lno; Node *v, *e, *a; Type *tv; NodeList *r; @@ -1663,23 +1663,37 @@ variter(NodeList *vl, Node *nt, NodeList *el) break; } e = el->n; - el = el->next; } else e = N; v = vl->n; tv = t; - if(t == T) { + if(e) { + lno = lineno; + lineno = v->lineno; typecheck(&e, Erv); - defaultlit(&e, T); - tv = e->type; + defaultlit(&e, t); + if(t) + e = typecheckconv(nil, e, t, 0); + if(tv == nil) + tv = e->type; + if(tv && tv->etype == TNIL) { + yyerror("cannot initialize %#N to untyped nil", v); + tv = nil; + } + lineno = lno; } + a = N; - if(e != N || funcdepth > 0) + if((e != N && tv != T) || funcdepth > 0) a = nod(OAS, v, e); dodclvar(v, tv, &r); if(a != N) r = list(r, a); + if(el) { + el->n = e; + el = el->next; + } } if(el != nil) yyerror("extra expr in var dcl"); diff --git a/src/cmd/gc/go.h b/src/cmd/gc/go.h index 33969ec8a2..7b2776dd76 100644 --- a/src/cmd/gc/go.h +++ b/src/cmd/gc/go.h @@ -328,36 +328,41 @@ enum OLITERAL, // exprs - OADD, OSUB, OOR, OXOR, + OADD, OSUB, OOR, OXOR, OADDSTR, OADDR, OANDAND, + OAPPENDSTR, OARRAY, + OARRAYBYTESTR, OARRAYRUNESTR, OAS, OAS2, OASOP, OBAD, OCALL, OCALLFUNC, OCALLMETH, OCALLINTER, OCAP, OCLOSE, OCLOSED, - OCOMPOS, OCOMPSLICE, OCOMPMAP, - OCONV, OCONVNOP, OCONVRUNE, OCONVSTRB, OCONVSTRI, OCONVA2S, + OCMPIFACE, OCMPSTR, + OCOMPLIT, OMAPLIT, OSTRUCTLIT, OARRAYLIT, + OCOMPSLICE, OCOMPMAP, + OCONV, OCONVNOP, OCONVA2S, OCONVIFACE, OCONVSLICE, ODCL, ODCLFUNC, ODCLFIELD, ODCLARG, ODOT, ODOTPTR, ODOTMETH, ODOTINTER, ODOTTYPE, OEQ, ONE, OLT, OLE, OGE, OGT, OFUNC, OIND, - OINDEX, OINDEXSTR, OINDEXMAP, OINDEXARR, + OINDEX, OINDEXSTR, OINDEXMAP, OKEY, OPARAM, OLEN, - OMAKE, + OMAKE, OMAKECHAN, OMAKEMAP, OMAKESLICE, OMUL, ODIV, OMOD, OLSH, ORSH, OAND, OANDNOT, ONEW, ONOT, OCOM, OPLUS, OMINUS, OOROR, OPANIC, OPANICN, OPRINT, OPRINTN, - OSEND, - OSLICE, OSLICESTR, OSLICEARR, + OSEND, OSENDNB, + OSLICE, OSLICEARR, OSLICESTR, ORECV, + ORUNESTR, // stmts OBLOCK, @@ -470,10 +475,9 @@ enum enum { Etop = 1<<1, // evaluated at statement level - Elv = 1<<2, // evaluated in lvalue context - Erv = 1<<3, // evaluated in rvalue context - Etype = 1<<4, - Ecall = 1<<5, + Erv = 1<<2, // evaluated in value context + Etype = 1<<3, + Ecall = 1<<4, }; #define BITS 5 @@ -658,6 +662,8 @@ EXTERN ushort blockgen; // max block number EXTERN ushort block; // current block number EXTERN int hasdefer; // flag that curfn has defer statetment +EXTERN Node* curfn; + EXTERN int maxround; EXTERN int widthptr; @@ -986,14 +992,12 @@ NodeList* ascompatet(int, NodeList*, Type**, int, NodeList**); NodeList* ascompatte(int, Type**, NodeList*, int, NodeList**); int ascompat(Type*, Type*); Node* newcompat(Node*); -Node* makecompat(Node*); Node* stringop(Node*, NodeList**); Type* fixmap(Type*); Node* mapop(Node*, NodeList**); Type* fixchan(Type*); Node* chanop(Node*, NodeList**); -Node* arrayop(Node*); -Node* ifacecvt(Type*, Node*, int); +Node* ifacecvt(Type*, Node*, int, NodeList**); Node* ifaceop(Node*); int ifaceas(Type*, Type*, int); int ifaceas1(Type*, Type*, int); @@ -1011,11 +1015,11 @@ Node* arraylit(Node*, Node*, NodeList**); Node* maplit(Node*, Node*, NodeList**); Node* selectas(Node*, Node*, NodeList**); Node* old2new(Node*, Type*, NodeList**); -void addrescapes(Node*); void heapmoves(void); void walkdeflist(NodeList*); void walkdef(Node*); void typechecklist(NodeList*, int); +Node* typecheckconv(Node*, Node*, Type*, int); Node* typecheck(Node**, int); /* diff --git a/src/cmd/gc/go.y b/src/cmd/gc/go.y index 97800d34dc..4e280c1778 100644 --- a/src/cmd/gc/go.y +++ b/src/cmd/gc/go.y @@ -123,7 +123,8 @@ file: { if(debug['f']) frame(1); - fninit($4); + if(nerrors == 0) + fninit($4); if(nsyntaxerrors == 0) testdclstack(); } @@ -882,7 +883,7 @@ pexpr: | convtype lbrace braced_keyval_list '}' { // composite expression - $$ = nod(OCOMPOS, N, $1); + $$ = nod(OCOMPLIT, N, $1); $$->list = $3; // If the opening brace was an LBODY, @@ -894,7 +895,7 @@ pexpr: | pexpr '{' braced_keyval_list '}' { // composite expression - $$ = nod(OCOMPOS, N, $1); + $$ = nod(OCOMPLIT, N, $1); $$->list = $3; } | fnliteral diff --git a/src/cmd/gc/print.c b/src/cmd/gc/print.c index 18d1ba38f4..5792422b4b 100644 --- a/src/cmd/gc/print.c +++ b/src/cmd/gc/print.c @@ -208,11 +208,12 @@ exprfmt(Fmt *f, Node *n, int prec) exprfmt(f, n->left, 0); break; - case OCOMPOS: + case OCOMPLIT: fmtprint(f, ""); break; case ODOT: + case ODOTPTR: case ODOTINTER: case ODOTMETH: exprfmt(f, n->left, 7); diff --git a/src/cmd/gc/sinit.c b/src/cmd/gc/sinit.c index 10cbc36494..485b7f6849 100644 --- a/src/cmd/gc/sinit.c +++ b/src/cmd/gc/sinit.c @@ -2,6 +2,10 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +/* + * static initialization + */ + #include "go.h" static struct diff --git a/src/cmd/gc/subr.c b/src/cmd/gc/subr.c index d05830bce4..52cd3a09da 100644 --- a/src/cmd/gc/subr.c +++ b/src/cmd/gc/subr.c @@ -1209,6 +1209,14 @@ Nconv(Fmt *fp) goto out; } + if(fp->flags & FmtSign) { + if(n->type == T || n->type->etype == TNIL) + fmtprint(fp, "nil"); + else + fmtprint(fp, "%#N (type %T)", n, n->type); + goto out; + } + if(fp->flags & FmtSharp) { exprfmt(fp, n, 0); goto out; @@ -1593,22 +1601,7 @@ eqtype(Type *t1, Type *t2) int cvttype(Type *dst, Type *src) { - Sym *ds, *ss; - int ret; - - if(eqtype1(dst, src, 0, 0)) - return 1; - - // Can convert if assignment compatible when - // top-level names are ignored. - ds = dst->sym; - dst->sym = nil; - ss = src->sym; - src->sym = nil; - ret = ascompat(dst, src); - dst->sym = ds; - src->sym = ss; - return ret == 1; + return eqtype1(dst, src, 0, 0); } int @@ -1746,6 +1739,7 @@ noconv(Type *t1, Type *t2) void argtype(Node *on, Type *t) { + dowidth(t); if(!subtype(&on->type, t, 0)) fatal("argtype: failed %N %T\n", on, t); } @@ -2274,7 +2268,7 @@ saferef(Node *n, NodeList **init) r = nod(OXXX, N, N); *r = *n; r->left = l; - typecheck(&r, Elv); + typecheck(&r, Erv); walkexpr(&r, init); return r; @@ -2288,7 +2282,7 @@ saferef(Node *n, NodeList **init) walkexpr(&a, init); *init = list(*init, a); r = nod(OIND, l, N); - typecheck(&r, Elv); + typecheck(&r, Erv); walkexpr(&r, init); return r; } diff --git a/src/cmd/gc/typecheck.c b/src/cmd/gc/typecheck.c index ac83ca8552..5f82b08eee 100644 --- a/src/cmd/gc/typecheck.c +++ b/src/cmd/gc/typecheck.c @@ -2,12 +2,35 @@ // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. +/* + * type check the whole tree of an expression. + * calculates expression types. + * evaluates compile time constants. + * marks variables that escape the local frame. + * rewrites n->op to be more specific in some cases. + * sets n->walk to walking function. + * + * TODO: + * trailing ... section of function calls + * statements + */ + #include "go.h" static void implicitstar(Node**); static int onearg(Node*); static int lookdot(Node*, Type*); -static int convert(Node**, Type*, int); +static void typecheckaste(int, Type*, NodeList*); +static int exportassignok(Type*); +static Type* lookdot1(Sym *s, Type *t, Type *f); +static int nokeys(NodeList*); +static void typecheckcomplit(Node**); +static void addrescapes(Node*); + +static void checklvalue(Node*, char*); +static void checkassign(Node*); +static void checkassignlist(NodeList*); +static int islvalue(Node*); void typechecklist(NodeList *l, int top) @@ -17,26 +40,23 @@ typechecklist(NodeList *l, int top) } /* - * type check the whole tree of an expression. - * calculates expression types. - * evaluates compile time constants. - * marks variables that escape the local frame. - * rewrites n->op to be more specific in some cases. + * type check node *np. * replaces *np with a new pointer in some cases. * returns the final value of *np as a convenience. */ Node* typecheck(Node **np, int top) { - int et, op, nerr, len; - NodeList *ll; + int et, op; Node *n, *l, *r; NodeList *args; - int i, lno, ok; + int lno, ok; Type *t; n = *np; - if(n == N || n->typecheck == 1) + if(n == N) + return N; + if(n->typecheck == 1 && n->op != ONAME) // XXX for test/func4.go return n; if(n->typecheck == 2) fatal("typecheck loop"); @@ -63,7 +83,7 @@ reswitch: goto ret; case ONONAME: - ok |= Elv | Erv; + ok |= Erv; goto ret; case ONAME: @@ -72,8 +92,6 @@ reswitch: goto error; } ok |= Erv; - if(n->class != PFUNC) - ok |= Elv; goto ret; /* @@ -187,7 +205,7 @@ reswitch: * type or expr */ case OIND: - l = typecheck(&n->left, top | Etype); + l = typecheck(&n->left, Erv | Etype); if((t = l->type) == T) goto error; if(l->op == OTYPE) { @@ -198,9 +216,10 @@ reswitch: goto ret; } if(!isptr[t->etype]) { - yyerror("invalid indirect %#N (non-pointer type %T)", n, t); + yyerror("invalid indirect of %+N", n); goto error; } + ok |= Erv; n->type = t->type; goto ret; @@ -209,7 +228,8 @@ reswitch: */ case OASOP: ok |= Etop; - l = typecheck(&n->left, Elv); + l = typecheck(&n->left, Erv); + checkassign(n->left); r = typecheck(&n->right, Erv); if(l->type == T || r->type == T) goto error; @@ -280,6 +300,19 @@ reswitch: n->right = r; } } + if(et == TSTRING) { + if(iscmp[n->op]) { + n->etype = n->op; + n->op = OCMPSTR; + } else if(n->op == OASOP) + n->op = OAPPENDSTR; + else if(n->op == OADD) + n->op = OADDSTR; + } + if(et == TINTER) { + n->etype = n->op; + n->op = OCMPIFACE; + } n->type = t; goto ret; @@ -315,73 +348,29 @@ reswitch: * exprs */ case OADDR: - typecheck(&n->left, Elv); + typecheck(&n->left, Erv); + if(n->left->type == T) + goto error; + switch(n->left->op) { + case OMAPLIT: + case OSTRUCTLIT: + case OARRAYLIT: + break; + default: + checklvalue(n->left, "take the address of"); + } defaultlit(&n->left, T); l = n->left; if((t = l->type) == T) goto error; + addrescapes(n->left); n->type = ptrto(t); goto ret; - case OCOMPOS: - l = typecheck(&n->right /* sic */, Etype /* TODO | Edotarray */); - if((t = l->type) == T) + case OCOMPLIT: + typecheckcomplit(&n); + if(n->type == T) goto error; - nerr = nerrors; - switch(t->etype) { - case TARRAY: - len = 0; - i = 0; - for(ll=n->list; ll; ll=ll->next) { - l = ll->n; - if(l->op == OKEY) { - typecheck(&l->left, Erv); - evconst(l->left); - i = nonnegconst(l->left); - typecheck(&l->right, Erv); - defaultlit(&l->right, t->type); - // TODO more forceful conversion of l->right - } else { - typecheck(&ll->n, Erv); - defaultlit(&ll->n, t->type); - // TODO more forceful conversion - } - i++; - if(i > len) { - len = i; - if(t->bound >= 0 && len > t->bound) { - setlineno(l); - yyerror("array index out of bounds"); - t->bound = -1; // no more errors - } - } - } - if(t->bound == -100) - t->bound = len; - break; - - case TMAP: - for(ll=n->list; ll; ll=ll->next) { - l = ll->n; - if(l->op != OKEY) { - yyerror("missing key in map literal"); - continue; - } - typecheck(&l->left, Erv); - typecheck(&l->right, Erv); - defaultlit(&l->left, t->down); - defaultlit(&l->right, t->type); - // TODO more forceful - } - break; - - case TSTRUCT: - // fatal("compos %T", t); - ; - } - if(nerr != nerrors) - goto error; - n->type = t; goto ret; case ODOT: @@ -399,7 +388,7 @@ reswitch: n->op = ODOTPTR; } if(!lookdot(n, t)) { - yyerror("%#N undefined (%S in type %T)", n, n->right->sym, t); + yyerror("%#N undefined (type %T has no field %S)", n, t, n->right->sym); goto error; } switch(n->op) { @@ -409,7 +398,6 @@ reswitch: break; default: ok |= Erv; - // TODO ok |= Elv sometimes break; } goto ret; @@ -448,24 +436,24 @@ reswitch: goto error; case TARRAY: - ok |= Erv | Elv; + ok |= Erv; defaultlit(&n->right, types[TUINT]); n->type = t->type; break; case TMAP: n->etype = 0; - if(top & Elv) - n->etype = 1; // clumsy hack - ok |= Erv | Elv; + ok |= Erv; defaultlit(&n->right, t->down); n->type = t->type; + n->op = OINDEXMAP; break; case TSTRING: ok |= Erv; defaultlit(&n->right, types[TUINT]); n->type = types[TUINT8]; + n->op = OINDEXSTR; break; } goto ret; @@ -477,11 +465,11 @@ reswitch: if((t = l->type) == T) goto error; if(t->etype != TCHAN) { - yyerror("invalid operation: %#N (recv from non-chan type %T)", n, t); + yyerror("invalid operation: %#N (receive from non-chan type %T)", n, t); goto error; } if(!(t->chan & Crecv)) { - yyerror("invalid operation: %#N (recv from send-only type %T)", n, t); + yyerror("invalid operation: %#N (receive from send-only type %T)", n, t); goto error; } n->type = t->type; @@ -496,7 +484,7 @@ reswitch: if((t = l->type) == T) goto error; if(!(t->chan & Csend)) { - yyerror("invalid operation: %#N (send to recv-only type %T)", n, t); + yyerror("invalid operation: %#N (send to receive-only type %T)", n, t); goto error; } defaultlit(&n->right, t->type); @@ -506,7 +494,7 @@ reswitch: // TODO: more aggressive n->etype = 0; if(top & Erv) - n->etype = 1; // clumsy hack + n->op = OSENDNB; ok |= Etop | Erv; n->type = types[TBOOL]; goto ret; @@ -527,13 +515,13 @@ reswitch: if((t = n->right->left->type) == T) goto error; if(!isint[t->etype]) { - yyerror("invalid array index %#N (type %T)", n->right->left, t); + yyerror("invalid slice index %#N (type %T)", n->right->left, t); goto error; } if((t = n->right->right->type) == T) goto error; if(!isint[t->etype]) { - yyerror("invalid array index %#N (type %T)", n->right->right, t); + yyerror("invalid slice index %#N (type %T)", n->right->right, t); goto error; } l = n->left; @@ -541,24 +529,25 @@ reswitch: goto error; // TODO(rsc): 64-bit slice index needs to be checked // for overflow in generated code - switch(t->etype) { - default: - yyerror("invalid operation: %#N (slice of type %T)", n, t); - goto error; - - case TARRAY: - n->type = typ(TARRAY); - n->type->type = t; - n->type->bound = -1; - n = arrayop(n); - break; - - case TSTRING: + if(istype(t, TSTRING)) { n->type = t; - n = stringop(n, nil); - break; + n->op = OSLICESTR; + goto ret; } - goto ret; + if(isfixedarray(t)) { + n->type = typ(TARRAY); + n->type->type = t->type; + n->type->bound = -1; + dowidth(n->type); + n->op = OSLICEARR; + goto ret; + } + if(isslice(t)) { + n->type = t; + goto ret; + } + yyerror("cannot slice %#N (type %T)", l, t); + goto error; /* * call and call like @@ -572,14 +561,16 @@ reswitch: n->right = N; goto reswitch; } - l = typecheck(&n->left, Erv | Etype | Ecall); + typecheck(&n->left, Erv | Etype | Ecall); + defaultlit(&n->left, T); + l = n->left; typechecklist(n->list, Erv); if((t = l->type) == T) -{ -yyerror("skip %#N", n); goto error; -} - if(l->op == OTYPE) { + dowidth(t); + + switch(l->op) { + case OTYPE: ok |= Erv; // turn CALL(type, arg) into CONV(arg) w/ type n->left = N; @@ -588,8 +579,25 @@ yyerror("skip %#N", n); n->op = OCONV; n->type = l->type; goto doconv; + + case ODOTINTER: + n->op = OCALLINTER; + break; + + case ODOTMETH: + n->op = OCALLMETH; + typecheckaste(OCALL, getthisx(t), list1(l->left)); + break; + + default: + n->op = OCALLFUNC; + if(t->etype != TFUNC) { + yyerror("cannot call non-function %#N (type %T)", l, t); + goto error; + } + break; } - // TODO: check args + typecheckaste(OCALL, getinargx(t), n->list); if(t->outtuple == 0) { ok |= Etop; goto ret; @@ -642,9 +650,7 @@ yyerror("skip %#N", n); goto ret; case OCLOSED: - ok |= Erv; case OCLOSE: - ok |= Etop; if(onearg(n) < 0) goto error; typecheck(&n->left, Erv); @@ -656,25 +662,22 @@ yyerror("skip %#N", n); yyerror("invalid operation: %#N (non-chan type %T)", n, t); goto error; } - if(n->op == OCLOSED) + if(n->op == OCLOSED) { n->type = types[TBOOL]; + ok |= Erv; + } else + ok |= Etop; goto ret; case OCONV: doconv: typecheck(&n->left, Erv); defaultlit(&n->left, n->type); - if((t = n->left->type) == T) + if((t = n->left->type) == T || n->type == T) goto error; - switch(convert(&n->left, n->type, 1)) { - case -1: + n = typecheckconv(n, n->left, n->type, 1); + if(n->type == T) goto error; - case 0: - n = n->left; - break; - case OCONV: - break; - } goto ret; case OMAKE: @@ -723,8 +726,11 @@ yyerror("skip %#N", n); yyerror("non-integer cap argument to make(%T)", t); goto error; } + if(r == N) + r = nodintconst(0); n->left = l; n->right = r; + n->op = OMAKESLICE; break; case TMAP: @@ -740,7 +746,9 @@ yyerror("skip %#N", n); goto error; } n->left = l; - } + } else + n->left = nodintconst(0); + n->op = OMAKEMAP; break; case TCHAN: @@ -757,11 +765,14 @@ yyerror("skip %#N", n); goto error; } n->left = l; - } + } else + n->left = nodintconst(0); + n->op = OMAKECHAN; break; } if(args != nil) { yyerror("too many arguments to make(%T)", t); + n->op = OMAKE; goto error; } n->type = t; @@ -796,12 +807,16 @@ yyerror("skip %#N", n); * statements */ case OAS: - typecheck(&n->left, Elv); + typecheck(&n->left, Erv); + checkassign(n->left); typecheck(&n->right, Erv); + if(n->left->type != T && n->right && n->right->type != T) + n->right = typecheckconv(nil, n->right, n->left->type, 0); goto ret; case OAS2: - typechecklist(n->list, Elv); + typechecklist(n->list, Erv); + checkassignlist(n->list); typechecklist(n->rlist, Erv); goto ret; @@ -835,7 +850,9 @@ yyerror("skip %#N", n); case ORETURN: typechecklist(n->list, Erv); - // TODO convert + if(curfn->type->outnamed && n->list == nil) + goto ret; + typecheckaste(ORETURN, getoutargx(curfn->type), n->list); goto ret; case OSELECT: @@ -851,7 +868,7 @@ yyerror("skip %#N", n); goto ret; case OTYPECASE: - typecheck(&n->left, Elv); + typecheck(&n->left, Erv); goto ret; case OTYPESW: @@ -870,7 +887,7 @@ ret: yyerror("type %T is not an expression", n->type); goto error; } - if((top & (Elv|Erv|Etype)) == Etype && n->op != OTYPE) { + if((top & (Erv|Etype)) == Etype && n->op != OTYPE) { yyerror("%O is not a type", n->op); goto error; } @@ -982,7 +999,7 @@ lookdot(Node *n, Type *t) if(t->etype == TINTER) { if(isptr[n->left->type->etype]) { n->left = nod(OIND, n->left, N); // implicitstar - typecheck(&n->left, Elv); + typecheck(&n->left, Erv); } n->op = ODOTINTER; } @@ -994,7 +1011,8 @@ lookdot(Node *n, Type *t) rcvr = getthisx(f2->type)->type->type; if(!eqtype(rcvr, tt)) { if(rcvr->etype == tptr && eqtype(rcvr->type, tt)) { - typecheck(&n->left, Elv); + typecheck(&n->left, Erv); + checklvalue(n->left, "call pointer method on"); addrescapes(n->left); n->left = nod(OADDR, n->left, N); typecheck(&n->left, Erv); @@ -1016,104 +1034,624 @@ lookdot(Node *n, Type *t) return 0; } -/* - * try to convert *np to t. - * explicit means conversion like int64(n). - * not explicit means assignment, return, or function call parameter. - * return -1 for failure, 0 if OCONV node not needed, 1 if OCONV is needed. - */ static int -convert(Node **np, Type *t, int explicit) +nokeys(NodeList *l) { - int et; - Node *n, *n1; - Type *tt; + for(; l; l=l->next) + if(l->n->op == OKEY) + return 0; + return 1; +} - n = *np; +Node* +typecheckconv(Node *nconv, Node *n, Type *t, int explicit) +{ + int et, op; + Node *n1; - if(n->type == t) - return 0; + op = OCONV; + et = 0; - if(eqtype(n->type, t)) - return OCONV; + // preexisting error + if(t == T || t->etype == TFORW) + return n; + + /* + * implicit conversions + */ - // XXX wtf? convlit1(&n, t, explicit); if(n->type == T) - return -1; + return n; - // no-op conversion - if(cvttype(t, n->type) == 1) { + if(eqtype(t, n->type)) { + exportassignok(t); + op = OCONVNOP; + if(!explicit || t == n->type) + return n; + goto conv; + } + + // interfaces are not subject to the name restrictions below. + // accept anything involving interfaces and let walkiface + // generate a good message. some messages have to be + // delayed anyway. + if(isnilinter(t) || isnilinter(n->type) || isinter(t) || isinter(n->type)) { + et = ifaceas1(t, n->type, 0); + op = OCONVIFACE; + goto conv; + } + + // otherwise, if concrete types have names, they must match. + if(!explicit && t->sym && n->type->sym && t != n->type) + goto badimplicit; + + // channel must not lose directionality + if(t->etype == TCHAN && n->type->etype == TCHAN) { + if(t->chan & ~n->type->chan) { + if(!explicit) + goto badimplicit; + goto badexplicit; + } + if(eqtype(t->type, n->type->type)) { + op = OCONVNOP; + goto conv; + } + } + + // array to slice + if(isslice(t) && isptr[n->type->etype] && isfixedarray(n->type->type) + && eqtype(t->type, n->type->type->type)) { + op = OCONVSLICE; + goto conv; + } + + if(!explicit) { + badimplicit: + yyerror("cannot use %+N as type %T", n, t); + n = nod(OCONV, n, N); // leave type == T + n->typecheck = 1; + return n; + } + + /* + * explicit conversions + */ + + // same representation + if(cvttype(t, n->type)) { if(n->op == OLITERAL) { // can convert literal in place n1 = nod(OXXX, N, N); *n1 = *n; n1->type = t; - *np = n1; - return 0; + return n1; } - return OCONV; - } - - if(!explicit) { - yyerror("cannot use %#N (type %T) as type %T", n, n->type, t); - return -1; + op = OCONVNOP; + goto conv; } // simple fix-float - if(isint[n->type->etype] || isfloat[n->type->etype]) - if(isint[t->etype] || isfloat[t->etype]) { + if(isint[t->etype] || isfloat[t->etype]) + if(isint[n->type->etype] || isfloat[n->type->etype]) { // evconst(n); // XXX is this needed? - return OCONV; - } - - // to/from interface. - // ifaceas1 will generate a good error if the conversion fails. - if(t->etype == TINTER || n->type->etype == TINTER) { - n = ifacecvt(t, n, ifaceas1(t, n->type, 0)); - n->type = t; - *np = n; - return 0; + goto conv; } // to string if(istype(t, TSTRING)) { // integer rune - et = n->type->etype; - if(isint[et]) { - // xxx; - return OCONVRUNE; + if(isint[n->type->etype]) { + op = ORUNESTR; + goto conv; } - // []byte and *[10]byte -> string - tt = T; - if(isptr[et] && isfixedarray(n->type->type)) - tt = n->type->type->type; - else if(isslice(n->type)) - tt = n->type->type; - if(tt) { - if(tt->etype == TUINT8) - return OCONVSTRB; - if(tt->etype == TINT) - return OCONVSTRI; + // *[10]byte -> string? convert *[10]byte -> []byte + // in preparation for next step + if(isptr[n->type->etype] && isfixedarray(n->type->type)) { + switch(n->type->type->type->etype) { + case TUINT8: + case TINT: + n1 = nod(OCONV, n, N); + n1->type = typ(TARRAY); + n1->type->bound = -1; + n1->type->type = n->type->type->type; + dowidth(n1->type); + typecheck(&n1, Erv); + walkexpr(&n1, nil); + n = n1; + break; + } + } + + // []byte -> string + if(isslice(n->type)) { + switch(n->type->type->etype) { + case TUINT8: + op = OARRAYBYTESTR; + goto conv; + case TINT: + op = OARRAYRUNESTR; + goto conv; + } } } - // convert static array to slice - if(isslice(t) && isptr[n->type->etype] && isfixedarray(n->type->type) - && eqtype(t->type, n->type->type->type)) - return OCONVA2S; - // convert to unsafe pointer if(isptrto(t, TANY) && (isptr[n->type->etype] || n->type->etype == TUINTPTR)) - return OCONV; + goto conv; // convert from unsafe pointer if(isptrto(n->type, TANY) && (isptr[t->etype] || t->etype == TUINTPTR)) - return OCONV; + goto conv; - yyerror("cannot convert %#N (type %T) to type %T", n, n->type, t); - return -1; +badexplicit: + yyerror("cannot convert %+N to type %T", n, t); + nconv->type = T; + return nconv; + +conv: + if(nconv == nil) { + nconv = nod(OXXX, n, N); + nconv->type = t; + nconv->typecheck = 1; + } + nconv->etype = et; + nconv->op = op; + return nconv; +} + +/* + * typecheck assignment: type list = type list + */ +static void +typecheckastt(int op, Type *t1, Type *t2) +{ + for(t1=t1->type, t2=t2->type; t1; t1=t1->down, t2=t2->down) { + if(t2 == nil) { + yyerror("too few"); + return; + } + if(!eqtype(t1->type, t2->type)) { + yyerror("wrong"); + } + } + if(t2 != nil) + yyerror("too many"); +} + +/* + * typecheck assignment: type list = expression list + */ +static void +typecheckaste(int op, Type *tstruct, NodeList *nl) +{ + Type *t, *tl; + Node *n; + + if(nl != nil && nl->next == nil && nl->n->type != T && nl->n->type->etype == TSTRUCT && nl->n->type->funarg) { + typecheckastt(op, tstruct, nl->n->type); + return; + } + + for(tl=tstruct->type; tl; tl=tl->down) { + t = tl->type; + if(isddd(t)) { + for(; nl; nl=nl->next) + defaultlit(&nl->n, T); + return; + } + if(nl == nil) { + yyerror("not enough arguments to %#O", op); + return; + } + n = nl->n; + if(n->type != T) + nl->n = typecheckconv(nil, n, t, 0); + nl = nl->next; + } + if(nl != nil) { + yyerror("too many arguments to %#O", op); + return; + } +} + +/* + * do the export rules allow writing to this type? + * cannot be implicitly assigning to any type with + * an unavailable field. + */ +static int +exportassignok(Type *t) +{ + Type *f; + Sym *s; + + if(t == T) + return 1; + switch(t->etype) { + default: + // most types can't contain others; they're all fine. + break; + case TSTRUCT: + for(f=t->type; f; f=f->down) { + if(f->etype != TFIELD) + fatal("structas: not field"); + s = f->sym; + // s == nil doesn't happen for embedded fields (they get the type symbol). + // it only happens for fields in a ... struct. + if(s != nil && !exportname(s->name) && strcmp(package, s->package) != 0) { + yyerror("implicit assignment of %T field '%s'", t, s->name); + return 0; + } + if(!exportassignok(f->type)) + return 0; + } + break; + + case TARRAY: + if(t->bound < 0) // slices are pointers; that's fine + break; + if(!exportassignok(t->type)) + return 0; + break; + } + return 1; +} + + +/* + * type check composite + */ + +static void +fielddup(Node *n, Node *hash[], ulong nhash) +{ + uint h; + char *s; + Node *a; + + if(n->op != ONAME) + fatal("fielddup: not ONAME"); + s = n->sym->name; + h = stringhash(s)%nhash; + for(a=hash[h]; a!=N; a=a->ntest) { + if(strcmp(a->sym->name, s) == 0) { + yyerror("duplicate field name in struct literal: %s", s); + return; + } + } + n->ntest = hash[h]; + hash[h] = n; +} + +static void +keydup(Node *n, Node *hash[], ulong nhash) +{ + uint h; + ulong b; + double d; + int i; + Node *a; + Node cmp; + char *s; + + evconst(n); + if(n->op != OLITERAL) + return; // we dont check variables + + switch(n->val.ctype) { + default: // unknown, bool, nil + b = 23; + break; + case CTINT: + b = mpgetfix(n->val.u.xval); + break; + case CTFLT: + d = mpgetflt(n->val.u.fval); + s = (char*)&d; + b = 0; + for(i=sizeof(d); i>0; i--) + b = b*PRIME1 + *s++; + break; + case CTSTR: + b = 0; + s = n->val.u.sval->s; + for(i=n->val.u.sval->len; i>0; i--) + b = b*PRIME1 + *s++; + break; + } + + h = b%nhash; + memset(&cmp, 0, sizeof(cmp)); + for(a=hash[h]; a!=N; a=a->ntest) { + cmp.op = OEQ; + cmp.left = n; + cmp.right = a; + evconst(&cmp); + b = cmp.val.u.bval; + if(b) { + // too lazy to print the literal + yyerror("duplicate key in map literal"); + return; + } + } + n->ntest = hash[h]; + hash[h] = n; +} + +static void +indexdup(Node *n, Node *hash[], ulong nhash) +{ + uint h; + Node *a; + ulong b, c; + + if(n->op != OLITERAL) + fatal("indexdup: not OLITERAL"); + + b = mpgetfix(n->val.u.xval); + h = b%nhash; + for(a=hash[h]; a!=N; a=a->ntest) { + c = mpgetfix(a->val.u.xval); + if(b == c) { + yyerror("duplicate index in array literal: %ld", b); + return; + } + } + n->ntest = hash[h]; + hash[h] = n; +} + +static void +typecheckcomplit(Node **np) +{ + int bad, i, len, nerr; + Node *l, *n, *hash[101]; + NodeList *ll; + Type *t, *f; + + n = *np; + + memset(hash, 0, sizeof hash); + + // TODO: dup detection + l = typecheck(&n->right /* sic */, Etype /* TODO | Edotarray */); + if((t = l->type) == T) + goto error; + nerr = nerrors; + switch(t->etype) { + default: + yyerror("invalid type for composite literal: %T", t); + n->type = T; + break; + + case TARRAY: + len = 0; + i = 0; + for(ll=n->list; ll; ll=ll->next) { + l = ll->n; + if(l->op == OKEY) { + typecheck(&l->left, Erv); + evconst(l->left); + i = nonnegconst(l->left); + if(i < 0) { + yyerror("array index must be non-negative integer constant"); + i = -(1<<30); // stay negative for a while + } + typecheck(&l->right, Erv); + defaultlit(&l->right, t->type); + l->right = typecheckconv(nil, l->right, t->type, 0); + } else { + typecheck(&ll->n, Erv); + defaultlit(&ll->n, t->type); + ll->n = typecheckconv(nil, ll->n, t->type, 0); + ll->n = nod(OKEY, nodintconst(i), ll->n); + ll->n->left->type = types[TINT]; + ll->n->left->typecheck = 1; + } + if(i >= 0) + indexdup(ll->n->left, hash, nelem(hash)); + i++; + if(i > len) { + len = i; + if(t->bound >= 0 && len > t->bound) { + setlineno(l); + yyerror("array index out of bounds"); + t->bound = -1; // no more errors + } + } + } + if(t->bound == -100) + t->bound = len; + if(t->bound < 0) + n->right = nodintconst(len); + n->op = OARRAYLIT; + break; + + case TMAP: + for(ll=n->list; ll; ll=ll->next) { + l = ll->n; + if(l->op != OKEY) { + typecheck(&ll->n, Erv); + yyerror("missing key in map literal"); + continue; + } + typecheck(&l->left, Erv); + typecheck(&l->right, Erv); + defaultlit(&l->left, t->down); + defaultlit(&l->right, t->type); + l->left = typecheckconv(nil, l->left, t->down, 0); + l->right = typecheckconv(nil, l->right, t->type, 0); + keydup(l->left, hash, nelem(hash)); + } + n->op = OMAPLIT; + break; + + case TSTRUCT: + bad = 0; + if(n->list != nil && nokeys(n->list)) { + // simple list of variables + f = t->type; + for(ll=n->list; ll; ll=ll->next) { + typecheck(&ll->n, Erv); + if(f == nil) { + if(!bad++) + yyerror("too many values in struct initializer"); + continue; + } + ll->n = typecheckconv(nil, ll->n, f->type, 0); + ll->n = nod(OKEY, newname(f->sym), ll->n); + ll->n->left->typecheck = 1; + f = f->down; + } + } else { + // keyed list + for(ll=n->list; ll; ll=ll->next) { + l = ll->n; + if(l->op != OKEY) { + if(!bad++) + yyerror("mixture of field:value and value initializers"); + typecheck(&ll->n, Erv); + continue; + } + if(l->left->sym == S) { + yyerror("invalid field name %#N in struct initializer", l->left); + typecheck(&l->right, Erv); + continue; + } + l->left->typecheck = 1; + f = lookdot1(l->left->sym, t, t->type); + typecheck(&l->right, Erv); + if(f == nil) + continue; + fielddup(newname(f->sym), hash, nelem(hash)); + l->right = typecheckconv(nil, l->right, f->type, 0); + } + } + n->op = OSTRUCTLIT; + break; + } + if(nerr != nerrors) + goto error; + n->type = t; + + *np = n; + return; + +error: + n->type = T; + *np = n; +} + +/* + * the address of n has been taken and might be used after + * the current function returns. mark any local vars + * as needing to move to the heap. + */ +static void +addrescapes(Node *n) +{ + char buf[100]; + switch(n->op) { + default: + // probably a type error already. + // dump("addrescapes", n); + break; + + case ONAME: + if(n->noescape) + break; + switch(n->class) { + case PPARAMOUT: + yyerror("cannot take address of out parameter %s", n->sym->name); + break; + case PAUTO: + case PPARAM: + // if func param, need separate temporary + // to hold heap pointer. + if(n->class == PPARAM) { + // expression to refer to stack copy + n->stackparam = nod(OPARAM, n, N); + n->stackparam->type = n->type; + n->stackparam->addable = 1; + n->stackparam->xoffset = n->xoffset; + } + + n->class |= PHEAP; + n->addable = 0; + n->ullman = 2; + n->alloc = callnew(n->type); + n->xoffset = 0; + + // create stack variable to hold pointer to heap + n->heapaddr = nod(0, N, N); + tempname(n->heapaddr, ptrto(n->type)); + snprint(buf, sizeof buf, "&%S", n->sym); + n->heapaddr->sym = lookup(buf); + break; + } + break; + + case OIND: + case ODOTPTR: + break; + + case ODOT: + case OINDEX: + // ODOTPTR has already been introduced, + // so these are the non-pointer ODOT and OINDEX. + // In &x[0], if x is a slice, then x does not + // escape--the pointer inside x does, but that + // is always a heap pointer anyway. + if(!isslice(n->left->type)) + addrescapes(n->left); + break; + } +} + +static int +islvalue(Node *n) +{ + switch(n->op) { + case OINDEX: + case OIND: + case ODOTPTR: + return 1; + case ODOT: + return islvalue(n->left); + case ONAME: + if(n->class == PFUNC) + return 0; + return 1; + } + return 0; +} + +static void +checklvalue(Node *n, char *verb) +{ + if(!islvalue(n)) + yyerror("cannot %s %#N", verb, n); +} + +static void +checkassign(Node *n) +{ + if(islvalue(n)) + return; + if(n->op == OINDEXMAP) { + n->etype = 1; + return; + } + yyerror("cannot assign to %#N", n); +} + +static void +checkassignlist(NodeList *l) +{ + for(; l; l=l->next) + checkassign(l->n); } diff --git a/src/cmd/gc/walk.c b/src/cmd/gc/walk.c index 91f1ea875a..d9f2a9092c 100644 --- a/src/cmd/gc/walk.c +++ b/src/cmd/gc/walk.c @@ -4,15 +4,13 @@ #include "go.h" -static Node* curfn; - -static Node* prcompat(Node*); +static Node* walkprint(Node*, NodeList**); static Node* mkcall(char*, Type*, NodeList**, ...); static Node* mkcall1(Node*, Type*, NodeList**, ...); static Node* conv(Node*, Type*); static Node* chanfn(char*, int, Type*); static Node* mapfn(char*, Type*); - +static Node* makenewvar(Type*, NodeList**, Node**); enum { Inone, @@ -79,7 +77,6 @@ void walk(Node *fn) { char s[50]; - // int nerr; curfn = fn; if(debug['W']) { @@ -89,12 +86,9 @@ walk(Node *fn) if(curfn->type->outtuple) if(walkret(curfn->nbody)) yyerror("function ends without a return statement"); - // nerr = nerrors; typechecklist(curfn->nbody, Etop); - /* TODO(rsc) - if(nerrors != nerr) + if(nerrors != 0) return; - */ walkstmtlist(curfn->nbody); if(debug['W']) { snprint(s, sizeof(s), "after walk %S", curfn->nname->sym); @@ -223,6 +217,7 @@ walkstmt(Node **np) dump("nottop", n); break; + case OAPPENDSTR: case OASOP: case OAS: case OAS2: @@ -336,16 +331,22 @@ walkexpr(Node **np, NodeList **init) Node *r, *l; NodeList *ll, *lr; Type *t; - Sym *s; int et, cl, cr; int32 lno; - Node *n; + Node *n, *fn; n = *np; if(n == N) return; + // annoying case - not typechecked + if(n->op == OKEY) { + walkexpr(&n->left, init); + walkexpr(&n->right, init); + return; + } + lno = setlineno(n); if(debug['w'] > 1) @@ -356,7 +357,6 @@ walkexpr(Node **np, NodeList **init) fatal("missed typecheck"); } -reswitch: t = T; et = Txxx; @@ -367,15 +367,9 @@ reswitch: goto ret; case OTYPE: - case OCALLMETH: - case OCALLINTER: - case OCALLFUNC: case ONONAME: case OINDREG: case OEMPTY: - case OCONVNOP: - case OCOMPMAP: - case OCOMPSLICE: goto ret; case ONOT: @@ -401,6 +395,13 @@ reswitch: case OOROR: case OSUB: case OMUL: + case OEQ: + case ONE: + case OLT: + case OLE: + case OGE: + case OGT: + case OADD: walkexpr(&n->left, init); walkexpr(&n->right, init); goto ret; @@ -410,7 +411,7 @@ reswitch: case OPANIC: case OPANICN: walkexprlist(n->list, init); - n = prcompat(n); + n = walkprint(n, init); goto ret; case OLITERAL: @@ -420,104 +421,50 @@ reswitch: case ONAME: if(!(n->class & PHEAP) && n->class != PPARAMREF) n->addable = 1; - if(n->type == T) { - s = n->sym; - if(s->undef == 0) { - if(n->etype != 0) - yyerror("walkexpr: %S must be called", s, init); - else - yyerror("walkexpr: %S undeclared", s, init); - s->undef = 1; - } + goto ret; + + case OCALLINTER: + t = n->left->type; + if(n->list && n->list->n->op == OAS) + goto ret; + walkexpr(&n->left, init); + walkexprlist(n->list, init); + ll = ascompatte(n->op, getinarg(t), n->list, 0, init); + n->list = reorder1(ll); + goto ret; + + case OCALLFUNC: + t = n->left->type; + if(n->list && n->list->n->op == OAS) + goto ret; + walkexpr(&n->left, init); + walkexprlist(n->list, init); + ll = ascompatte(n->op, getinarg(t), n->list, 0, init); + n->list = reorder1(ll); + if(isselect(n)) { + // special prob with selectsend and selectrecv: + // if chan is nil, they don't know big the channel + // element is and therefore don't know how to find + // the output bool, so we clear it before the call. + Node *b; + b = nodbool(0); + lr = ascompatte(n->op, getoutarg(t), list1(b), 0, init); + n->list = concat(n->list, lr); } goto ret; - case OCALL: - if(n->left == N) - goto ret; - - if(n->left->op == ONAME && n->left->etype != 0) { - // builtin OLEN, OCAP, etc. - n->op = n->left->etype; - n->left = N; - goto reswitch; - } - - walkexpr(&n->left, init); - defaultlit(&n->left, T); - + case OCALLMETH: t = n->left->type; - if(t == T) + if(n->list && n->list->n->op == OAS) goto ret; - - switch(n->left->op) { - case ODOTMETH: - n->op = OCALLMETH; - break; - case ODOTINTER: - n->op = OCALLINTER; - break; - case OTYPE: - n->op = OCONV; - // turn CALL(type, arg) into CONV(arg) w/ type. - n->type = n->left->type; - if(n->list == nil) { - yyerror("missing argument in type conversion"); - goto ret; - } - if(n->list->next != nil) { - yyerror("too many arguments in type conversion"); - goto ret; - } - n->left = n->list->n; - n->list = nil; - goto reswitch; - default: - n->op = OCALLFUNC; - break; - } - - if(t->etype != TFUNC) { - yyerror("call of a non-function: %T", t); - goto ret; - } - - dowidth(t); + walkexpr(&n->left, init); walkexprlist(n->list, init); - - switch(n->op) { - default: - fatal("walk: op: %O", n->op); - - case OCALLINTER: - ll = ascompatte(n->op, getinarg(t), n->list, 0, init); - n->list = reorder1(ll); - break; - - case OCALLFUNC: - ll = ascompatte(n->op, getinarg(t), n->list, 0, init); - n->list = reorder1(ll); - if(isselect(n)) { - // special prob with selectsend and selectrecv: - // if chan is nil, they don't know big the channel - // element is and therefore don't know how to find - // the output bool, so we clear it before the call. - Node *b; - b = nodbool(0); - lr = ascompatte(n->op, getoutarg(t), list1(b), 0, init); - n->list = concat(n->list, lr); - } - break; - - case OCALLMETH: - ll = ascompatte(n->op, getinarg(t), n->list, 0, init); - lr = ascompatte(n->op, getthis(t), list1(n->left->left), 0, init); - ll = concat(ll, lr); - n->left->left = N; - ullmancalc(n->left); - n->list = reorder1(ll); - break; - } + ll = ascompatte(n->op, getinarg(t), n->list, 0, init); + lr = ascompatte(n->op, getthis(t), list1(n->left->left), 0, init); + ll = concat(ll, lr); + n->left->left = N; + ullmancalc(n->left); + n->list = reorder1(ll); goto ret; case OAS: @@ -571,12 +518,10 @@ reswitch: } break; - case OINDEX: + case OINDEXMAP: if(cl == 2 && cr == 1) { // a,b = map[] - mapaccess2 walkexpr(&r->left, init); - if(!istype(r->left->type, TMAP)) - break; l = mapop(n, init); if(l == N) break; @@ -634,7 +579,7 @@ reswitch: } if(et == Inone) break; - r = ifacecvt(r->type, r->left, et); + r = ifacecvt(r->type, r->left, et, init); ll = ascompatet(n->op, n->list, &r->type, 0, init); n = liststmt(concat(list1(r), ll)); goto ret; @@ -643,11 +588,9 @@ reswitch: } switch(l->op) { - case OINDEX: + case OINDEXMAP: if(cl == 1 && cr == 2) { // map[] = a,b - mapassign2 - if(!istype(l->left->type, TMAP)) - break; l = mapop(n, init); if(l == N) break; @@ -664,42 +607,18 @@ reswitch: case ODOTTYPE: walkdottype(n, init); - // fall through - case OCONV: walkconv(&n, init); goto ret; - case OCOMPOS: - walkexpr(&n->right, init); - t = n->right->type; - n->type = t; - if(t == T) - goto ret; - - switch(t->etype) { - default: - yyerror("invalid type for composite literal: %T", t); - goto ret; - - case TSTRUCT: - r = structlit(n, N, init); - break; - - case TARRAY: - r = arraylit(n, N, init); - break; - - case TMAP: - r = maplit(n, N, init); - break; - } - n = r; + case OCONV: + case OCONVNOP: + walkexpr(&n->left, init); goto ret; case OASOP: walkexpr(&n->left, init); l = n->left; - if(l->op == OINDEX && istype(l->left->type, TMAP)) + if(l->op == OINDEXMAP) n = mapop(n, init); walkexpr(&n->right, init); if(n->etype == OANDNOT) { @@ -708,11 +627,7 @@ reswitch: n->right->type = n->right->left->type; goto ret; } - if(istype(n->left->type, TSTRING)) { - n = stringop(n, init); - goto ret; - } - + /* * on 32-bit arch, rewrite 64-bit ops into l = l op r */ @@ -734,25 +649,6 @@ reswitch: n->right->type = n->right->left->type; goto ret; - case OEQ: - case ONE: - case OLT: - case OLE: - case OGE: - case OGT: - case OADD: - walkexpr(&n->left, init); - walkexpr(&n->right, init); - if(istype(n->left->type, TSTRING)) { - n = stringop(n, nil); - goto ret; - } - if(isinter(n->left->type)) { - n = ifaceop(n); - goto ret; - } - goto ret; - case ODIV: case OMOD: /* @@ -779,131 +675,246 @@ reswitch: case OINDEX: walkexpr(&n->left, init); walkexpr(&n->right, init); - if(n->left == N || n->right == N) - goto ret; - t = n->left->type; - if(t == T) - goto ret; - - switch(t->etype) { - case TSTRING: - n = stringop(n, nil); - break; - - case TMAP: - if(n->etype != 1) // clumsy hack - n = mapop(n, nil); - break; - } goto ret; - case OCLOSE: - case OCLOSED: - case OSEND: + case OINDEXMAP: + if(n->etype == 1) + goto ret; + t = n->left->type; + n = mkcall1(mapfn("mapaccess1", t), t->type, init, n->left, n->right); + goto ret; + case ORECV: walkexpr(&n->left, init); walkexpr(&n->right, init); - n = chanop(n, init); + n = mkcall1(chanfn("chanrecv1", 2, n->left->type), n->type, init, n->left); goto ret; case OSLICE: walkexpr(&n->left, init); walkexpr(&n->right->left, init); walkexpr(&n->right->right, init); - if(n->left == N || n->right == N) - goto ret; - t = n->left->type; - if(t == T) - goto ret; - if(t->etype == TSTRING) { - n = stringop(n, nil); - goto ret; - } - if(t->etype == TARRAY) { - n = arrayop(n); - goto ret; - } + // dynamic slice + // arraysliced(old []any, lb int, hb int, width int) (ary []any) + t = n->type; + fn = syslook("arraysliced", 1); + argtype(fn, t->type); // any-1 + argtype(fn, t->type); // any-2 + n = mkcall1(fn, t, init, + n->left, + conv(n->right->left, types[TINT]), + conv(n->right->right, types[TINT]), + nodintconst(t->type->width)); goto ret; - case OADDR: - if(n->left->op == OCOMPOS) { - walkexpr(&n->left->right, init); - n->left->type = n->left->right->type; - if(n->left->type == T) - goto ret; + case OSLICEARR: + walkexpr(&n->left, init); + walkexpr(&n->right->left, init); + walkexpr(&n->right->right, init); + // static slice + // arrayslices(old *any, nel int, lb int, hb int, width int) (ary []any) + t = n->type; + fn = syslook("arrayslices", 1); + argtype(fn, n->left->type); // any-1 + argtype(fn, t->type); // any-2 + n = mkcall1(fn, t, init, + nod(OADDR, n->left, N), nodintconst(t->bound), + conv(n->right->left, types[TINT]), + conv(n->right->right, types[TINT]), + nodintconst(t->type->width)); + goto ret; - Node *nvar, *nas, *nstar; + case OADDR:; + Node *nvar, *nstar; - // turn &Point(1, 2) or &[]int(1, 2) or &[...]int(1, 2) into allocation. - // initialize with - // nvar := new(*Point); - // *nvar = Point(1, 2); - // and replace expression with nvar + // turn &Point(1, 2) or &[]int(1, 2) or &[...]int(1, 2) into allocation. + // initialize with + // nvar := new(*Point); + // *nvar = Point(1, 2); + // and replace expression with nvar + switch(n->left->op) { + case OARRAYLIT: + nvar = makenewvar(n->type, init, &nstar); + arraylit(n->left, nstar, init); + n = nvar; + goto ret; - nvar = nod(OXXX, N, N); - tempname(nvar, ptrto(n->left->type)); + case OMAPLIT: + nvar = makenewvar(n->type, init, &nstar); + maplit(n->left, nstar, init); + n = nvar; + goto ret; - nas = nod(OAS, nvar, callnew(n->left->type)); - typecheck(&nas, Etop); - walkexpr(&nas, init); - *init = list(*init, nas); - nstar = nod(OIND, nvar, N); - nstar->type = n->left->type; - - switch(n->left->type->etype) { - case TSTRUCT: - structlit(n->left, nstar, init); - break; - case TARRAY: - arraylit(n->left, nstar, init); - break; - case TMAP: - maplit(n->left, nstar, init); - break; - default: - goto badlit; - } - -// walkexpr(&n->left->left, init); + case OSTRUCTLIT: + nvar = makenewvar(n->type, init, &nstar); + structlit(n->left, nstar, init); n = nvar; goto ret; } - badlit: - if(istype(n->left->type, TFUNC) && n->left->class == PFUNC) { - if(!n->diag) { - n->diag = 1; - yyerror("cannot take address of function"); - } - } - if(n->left == N) - goto ret; walkexpr(&n->left, init); - t = n->left->type; - if(t == T) - goto ret; - addrescapes(n->left); - n->type = ptrto(t); - goto ret; - - case OMAKE: - n = makecompat(n); goto ret; case ONEW: - if(n->list == nil) { - yyerror("missing argument to new"); - goto ret; - } - if(n->list->next) - yyerror("too many arguments to new"); - walkexpr(&n->list->n, init); - l = n->list->n; - if((t = l->type) == T) - ; + n = callnew(n->type->type); + goto ret; + + case OCMPSTR: + // sys_cmpstring(s1, s2) :: 0 + r = mkcall("cmpstring", types[TINT], init, + conv(n->left, types[TSTRING]), + conv(n->right, types[TSTRING])); + r = nod(n->etype, r, nodintconst(0)); + typecheck(&r, Erv); + n = r; + goto ret; + + case OADDSTR: + // sys_catstring(s1, s2) + n = mkcall("catstring", n->type, init, + conv(n->left, types[TSTRING]), + conv(n->right, types[TSTRING])); + goto ret; + + case OAPPENDSTR: + // s1 = sys_catstring(s1, s2) + if(n->etype != OADD) + fatal("walkasopstring: not add"); + r = mkcall("catstring", n->left->type, init, + conv(n->left, types[TSTRING]), + conv(n->right, types[TSTRING])); + r = nod(OAS, n->left, r); + n = r; + goto ret; + + case OSLICESTR: + // sys_slicestring(s, lb, hb) + n = mkcall("slicestring", n->type, init, + conv(n->left, types[TSTRING]), + conv(n->right->left, types[TINT]), + conv(n->right->right, types[TINT])); + goto ret; + + case OINDEXSTR: + // TODO(rsc): should be done in back end + // sys_indexstring(s, i) + n = mkcall("indexstring", n->type, init, + conv(n->left, types[TSTRING]), + conv(n->right, types[TINT])); + goto ret; + + case OCLOSE: + // cannot use chanfn - closechan takes any, not chan any + fn = syslook("closechan", 1); + argtype(fn, n->left->type); + n = mkcall1(fn, T, init, n->left); + goto ret; + + case OCLOSED: + // cannot use chanfn - closechan takes any, not chan any + fn = syslook("closedchan", 1); + argtype(fn, n->left->type); + n = mkcall1(fn, n->type, init, n->left); + goto ret; + + case OMAKECHAN: + n = mkcall1(chanfn("newchan", 1, n->type), n->type, init, + nodintconst(n->type->type->width), + nodintconst(algtype(n->type->type)), + conv(n->left, types[TINT])); + goto ret; + + case OMAKEMAP: + t = n->type; + + fn = syslook("newmap", 1); + argtype(fn, t->down); // any-1 + argtype(fn, t->type); // any-2 + + n = mkcall1(fn, n->type, init, + nodintconst(t->down->width), // key width + nodintconst(t->type->width), // val width + nodintconst(algtype(t->down)), // key algorithm + nodintconst(algtype(t->type)), // val algorithm + conv(n->left, types[TINT])); + goto ret; + + case OMAKESLICE: + // newarray(nel int, max int, width int) (ary []any) + t = n->type; + fn = syslook("newarray", 1); + argtype(fn, t->type); // any-1 + n = mkcall1(fn, n->type, nil, + conv(n->left, types[TINT]), + conv(n->right, types[TINT]), + nodintconst(t->type->width)); + goto ret; + + case ORUNESTR: + // sys_intstring(v) + n = mkcall("intstring", n->type, init, conv(n->left, types[TINT64])); // TODO(rsc): int64?! + goto ret; + + case OARRAYBYTESTR: + // arraystring([]byte) string; + n = mkcall("arraystring", n->type, init, n->left); + goto ret; + + case OARRAYRUNESTR: + // arraystring([]byte) string; + n = mkcall("arraystringi", n->type, init, n->left); + goto ret; + + case OCMPIFACE: + // ifaceeq(i1 any-1, i2 any-2) (ret bool); + if(!eqtype(n->left->type, n->right->type)) + fatal("ifaceeq %O %T %T", n->op, n->left->type, n->right->type); + if(isnilinter(n->left->type)) + fn = syslook("efaceeq", 1); else - n = callnew(t); + fn = syslook("ifaceeq", 1); + argtype(fn, n->right->type); + argtype(fn, n->left->type); + r = mkcall1(fn, n->type, init, n->left, n->right); + if(n->etype == ONE) { + r = nod(ONOT, r, N); + typecheck(&r, Erv); + } + n = r; + goto ret; + + case OARRAYLIT: + n = arraylit(n, N, init); + goto ret; + + case OMAPLIT: + n = maplit(n, N, init); + goto ret; + + case OSTRUCTLIT: + n = structlit(n, N, init); + goto ret; + + case OSEND: + n = mkcall1(chanfn("chansend1", 2, n->left->type), T, init, n->left, n->right); + goto ret; + + case OSENDNB: + n = mkcall1(chanfn("chansend2", 2, n->left->type), n->type, init, n->left, n->right); + goto ret; + + case OCONVIFACE: + walkexpr(&n->left, init); + n = ifacecvt(n->type, n->left, n->etype, init); + goto ret; + + case OCONVSLICE: + // arrays2d(old *any, nel int) (ary []any) + fn = syslook("arrays2d", 1); + argtype(fn, n->left->type->type); // any-1 + argtype(fn, n->type->type); // any-2 + n = mkcall1(fn, n->type, init, n->left, nodintconst(n->left->type->type->bound)); goto ret; } fatal("missing switch %O", n->op); @@ -917,6 +928,23 @@ ret: *np = n; } +Node* +makenewvar(Type *t, NodeList **init, Node **nstar) +{ + Node *nvar, *nas; + + nvar = nod(OXXX, N, N); + tempname(nvar, t); + nas = nod(OAS, nvar, callnew(t->type)); + typecheck(&nas, Etop); + walkexpr(&nas, init); + *init = list(*init, nas); + + *nstar = nod(OIND, nvar, N); + typecheck(nstar, Erv); + return nvar; +} + void walkbool(Node **np) { @@ -958,7 +986,6 @@ walkconv(Node **np, NodeList **init) t = n->type; if(t == T) return; - typecheck(&n->left, Erv); walkexpr(&n->left, init); l = n->left; if(l == N) @@ -969,110 +996,19 @@ walkconv(Node **np, NodeList **init) // if using .(T), interface assertion. if(n->op == ODOTTYPE) { et = ifaceas1(t, l->type, 1); - if(et == I2Isame || et == E2Esame) - goto nop; + if(et == I2Isame || et == E2Esame) { + n->op = OCONVNOP; + return; + } if(et != Inone) { - n = ifacecvt(t, l, et); + n = ifacecvt(t, l, et, init); *np = n; return; } goto bad; } - // otherwise, conversion. - convlit1(&n->left, t, 1); - l = n->left; - if(l->type == T) - return; - - // no-op conversion - if(cvttype(t, l->type) == 1) { - nop: - if(l->op == OLITERAL) { - *n = *l; - n->type = t; - return; - } - // leave OCONV node in place - // in case tree gets walked again. - // back end will ignore. - n->op = OCONVNOP; - return; - } - - // to/from interface. - // ifaceas1 will generate a good error - // if the conversion is invalid. - if(t->etype == TINTER || l->type->etype == TINTER) { - n = ifacecvt(t, l, ifaceas1(t, l->type, 0)); - *np = n; - return; - } - - // simple fix-float - if(isint[l->type->etype] || isfloat[l->type->etype]) - if(isint[t->etype] || isfloat[t->etype]) { - evconst(n); - return; - } - - // to string - if(l->type != T) - if(istype(t, TSTRING)) { - et = l->type->etype; - if(isint[et]) { - n = stringop(n, nil); - *np = n; - return; - } - - // can convert []byte and *[10]byte - if((isptr[et] && isfixedarray(l->type->type) && istype(l->type->type->type, TUINT8)) - || (isslice(l->type) && istype(l->type->type, TUINT8))) { - n->op = OARRAY; - n = stringop(n, nil); - *np = n; - return; - } - - // can convert []int and *[10]int - if((isptr[et] && isfixedarray(l->type->type) && istype(l->type->type->type, TINT)) - || (isslice(l->type) && istype(l->type->type, TINT))) { - n->op = OARRAY; - n = stringop(n, nil); - *np = n; - return; - } - } - - // convert dynamic to static generated by ONEW/OMAKE - if(isfixedarray(t) && isslice(l->type)) - return; - - // convert static array to dynamic array - if(isslice(t) && isptr[l->type->etype] && isfixedarray(l->type->type)) { - if(eqtype(t->type->type, l->type->type->type->type)) { - n = arrayop(n); - *np = n; - return; - } - } - - // convert to unsafe.pointer - if(isptrto(n->type, TANY)) { - if(isptr[l->type->etype]) - return; - if(l->type->etype == TUINTPTR) - return; - } - - // convert from unsafe.pointer - if(isptrto(l->type, TANY)) { - if(isptr[t->etype]) - return; - if(t->etype == TUINTPTR) - return; - } + fatal("walkconv"); bad: if(n->diag) @@ -1279,6 +1215,7 @@ walkselect(Node *sel) break; case OSEND: + case OSENDNB: case ORECV: break; } @@ -1325,14 +1262,15 @@ ascompatee1(int op, Node *l, Node *r, NodeList **init) * a expression. called in * expr = expr */ + if(l->type != T && l->type->etype == TFORW) + return N; + if(r->type != T && r->type->etype ==TFORW) + return N; convlit(&r, l->type); if(!ascompat(l->type, r->type)) { badtype(op, l->type, r->type); return N; } - if(l->op == ONAME && l->class == PFUNC) - yyerror("cannot assign to function"); - a = nod(OAS, l, r); a = convas(a, init); return a; @@ -1653,7 +1591,7 @@ loop: } goto ret; } - convlit(&r, l->type); + if(!ascompat(l->type, r->type)) { badtype(op, l->type, r->type); return nil; @@ -1676,49 +1614,6 @@ ret: return nn; } -/* - * do the export rules allow writing to this type? - * cannot be implicitly assigning to any type with - * an unavailable field. - */ -int -exportasok(Type *t) -{ - Type *f; - Sym *s; - - if(t == T) - return 1; - switch(t->etype) { - default: - // most types can't contain others; they're all fine. - break; - case TSTRUCT: - for(f=t->type; f; f=f->down) { - if(f->etype != TFIELD) - fatal("structas: not field"); - s = f->sym; - // s == nil doesn't happen for embedded fields (they get the type symbol). - // it only happens for fields in a ... struct. - if(s != nil && !exportname(s->name) && strcmp(package, s->package) != 0) { - yyerror("implicit assignment of %T field '%s'", t, s->name); - return 0; - } - if(!exportasok(f->type)) - return 0; - } - break; - - case TARRAY: - if(t->bound < 0) // slices are pointers; that's fine - break; - if(!exportasok(t->type)) - return 0; - break; - } - return 1; -} - /* * can we assign var of type src to var of type dst? * return 0 if not, 1 if conversion is trivial, 2 if conversion is non-trivial. @@ -1726,10 +1621,8 @@ exportasok(Type *t) int ascompat(Type *dst, Type *src) { - if(eqtype(dst, src)) { - exportasok(src); + if(eqtype(dst, src)) return 1; - } if(dst == T || src == T) return 0; @@ -1775,7 +1668,7 @@ ascompat(Type *dst, Type *src) // generate code for print static Node* -prcompat(Node *nn) +walkprint(Node *nn, NodeList **init) { Node *r; Node *n; @@ -1792,10 +1685,9 @@ prcompat(Node *nn) for(l=all; l; l=l->next) { if(notfirst) - calls = list(calls, mkcall("printsp", T, nil)); + calls = list(calls, mkcall("printsp", T, init)); notfirst = op == OPRINTN || op == OPANICN; - typecheck(&l->n, Erv); n = l->n; if(n->op == OLITERAL) { switch(n->val.ctype) { @@ -1811,7 +1703,7 @@ prcompat(Node *nn) defaultlit(&n, types[TINT64]); defaultlit(&n, nil); l->n = n; - if(n->type == T) + if(n->type == T || n->type->etype == TFORW) continue; et = n->type->etype; @@ -1861,64 +1753,18 @@ prcompat(Node *nn) if(op == OPRINTN) calls = list(calls, mkcall("printnl", T, nil)); typechecklist(calls, Etop); - walkexprlist(calls, nil); + walkexprlist(calls, init); if(op == OPANIC || op == OPANICN) r = mkcall("panicl", T, nil); else r = nod(OEMPTY, N, N); typecheck(&r, Etop); - walkexpr(&r, nil); + walkexpr(&r, init); r->ninit = calls; return r; } -Node* -makecompat(Node *n) -{ - Type *t; - Node *l, *r; - NodeList *args, *init; - -//dump("makecompat", n); - args = n->list; - if(args == nil) { - yyerror("make requires type argument"); - return n; - } - r = N; - l = args->n; - args = args->next; - init = nil; - walkexpr(&l, &init); - if(l->op != OTYPE) { - yyerror("cannot make(expr)"); - return n; - } - t = l->type; - n->type = t; - n->list = args; - - if(t != T) - switch(t->etype) { - case TARRAY: - if(!isslice(t)) - goto bad; - return arrayop(n); - case TMAP: - return mapop(n, nil); - case TCHAN: - return chanop(n, nil); - } - -bad: - if(!n->diag) { - n->diag = 1; - yyerror("cannot make(%T)", t); - } - return n; -} - Node* callnew(Type *t) { @@ -1930,93 +1776,6 @@ callnew(Type *t) return mkcall1(fn, ptrto(t), nil, nodintconst(t->width)); } -Node* -stringop(Node *n, NodeList **init) -{ - Node *r, *fn; - - switch(n->op) { - default: - fatal("stringop: unknown op %O", n->op); - - case OEQ: - case ONE: - case OGE: - case OGT: - case OLE: - case OLT: - // sys_cmpstring(s1, s2) :: 0 - r = mkcall("cmpstring", types[TINT], init, - conv(n->left, types[TSTRING]), - conv(n->right, types[TSTRING])); - r = nod(n->op, r, nodintconst(0)); - typecheck(&r, Erv); - break; - - case OADD: - // sys_catstring(s1, s2) - r = mkcall("catstring", n->type, init, - conv(n->left, types[TSTRING]), - conv(n->right, types[TSTRING])); - break; - - case OASOP: - // sys_catstring(s1, s2) - switch(n->etype) { - default: - fatal("stringop: unknown op %O-%O", n->op, n->etype); - - case OADD: - // s1 = sys_catstring(s1, s2) - if(n->etype != OADD) - fatal("stringop: not cat"); - r = mkcall("catstring", n->left->type, init, - conv(n->left, types[TSTRING]), - conv(n->right, types[TSTRING])); - r = nod(OAS, n->left, r); - break; - } - break; - - - case OSLICE: - // sys_slicestring(s, lb, hb) - r = mkcall("slicestring", n->type, init, - conv(n->left, types[TSTRING]), - conv(n->right->left, types[TINT]), - conv(n->right->right, types[TINT])); - break; - - case OINDEX: - // TODO(rsc): should be done in back end - // sys_indexstring(s, i) - r = mkcall("indexstring", n->type, init, - conv(n->left, types[TSTRING]), - conv(n->right, types[TINT])); - break; - - case OCONV: - // sys_intstring(v) - r = mkcall("intstring", n->type, init, - conv(n->left, types[TINT64])); // TODO(rsc): int64?! - break; - - case OARRAY: - // arraystring([]byte) string; - r = n->left; - fn = syslook("arraystring", 0); - if(r->type != T && r->type->type != T) { - if(istype(r->type->type, TINT) || istype(r->type->type->type, TINT)) { - // arraystring([]byte) string; - fn = syslook("arraystringi", 0); - } - } - r = mkcall1(fn, n->type, init, r); - break; - } - return r; -} - Type* fixmap(Type *t) { @@ -2061,7 +1820,7 @@ mapop(Node *n, NodeList **init) { Node *r, *a, *l; Type *t; - Node *fn, *hint; + Node *fn; int cl, cr; NodeList *args; @@ -2070,49 +1829,9 @@ mapop(Node *n, NodeList **init) default: fatal("mapop: unknown op %O", n->op); - case OMAKE: - cl = count(n->list); - if(cl > 1) - yyerror("too many arguments to make map"); - - // newmap(keysize int, valsize int, - // keyalg int, valalg int, - // hint int) (hmap map[any-1]any-2); - - t = fixmap(n->type); - if(t == T) - break; - - fn = syslook("newmap", 1); - argtype(fn, t->down); // any-1 - argtype(fn, t->type); // any-2 - - if(cl == 1) - hint = n->list->n; - else - hint = nodintconst(0); - - r = mkcall1(fn, n->type, init, - nodintconst(t->down->width), // key width - nodintconst(t->type->width), // val width - nodintconst(algtype(t->down)), // key algorithm - nodintconst(algtype(t->type)), // val algorithm - hint); - break; - - case OINDEX: - // mapaccess1(hmap map[any]any, key any) (val any); - - t = fixmap(n->left->type); - if(t == T) - break; - - r = mkcall1(mapfn("mapaccess1", t), t->type, init, n->left, n->right); - break; - case OAS: // mapassign1(hmap map[any-1]any-2, key any-3, val any-4); - if(n->left->op != OINDEX) + if(n->left->op != OINDEXMAP) goto shape; t = fixmap(n->left->left->type); @@ -2135,7 +1854,7 @@ mapop(Node *n, NodeList **init) assign2: // mapassign2(hmap map[any]any, key any, val any, pres bool); l = n->list->n; - if(l->op != OINDEX) + if(l->op != OINDEXMAP) goto shape; t = fixmap(l->left->type); @@ -2150,7 +1869,7 @@ mapop(Node *n, NodeList **init) //dump("access2", n); r = n->rlist->n; - if(r->op != OINDEX) + if(r->op != OINDEXMAP) goto shape; t = fixmap(r->left->type); @@ -2184,8 +1903,7 @@ mapop(Node *n, NodeList **init) a = nod(OXXX, N, N); *a = *n->left; // copy of map[tmpi] - a->typecheck = 0; - a->type = T; + a->etype = 0; a = nod(n->etype, a, n->right); // m[tmpi] op right r = nod(OAS, n->left, a); // map[tmpi] = map[tmpi] op right typecheck(&r, Etop); @@ -2203,7 +1921,7 @@ shape: Node* chanop(Node *n, NodeList **init) { - Node *r, *a, *fn; + Node *r, *fn; Type *t; int cl, cr; @@ -2212,48 +1930,6 @@ chanop(Node *n, NodeList **init) default: fatal("chanop: unknown op %O", n->op); - case OCLOSE: - // closechan(hchan *chan any); - t = fixchan(n->left->type); - if(t == T) - break; - fn = syslook("closechan", 1); - argtype(fn, t); - r = mkcall1(fn, T, init, n->left); - break; - - case OCLOSED: - // closedchan(hchan *chan any) bool; - t = fixchan(n->left->type); - if(t == T) - break; - fn = syslook("closedchan", 1); - argtype(fn, t); - r = mkcall1(fn, n->type, init, n->left); - break; - - case OMAKE: - cl = count(n->list); - if(cl > 1) - yyerror("too many arguments to make chan"); - - // newchan(elemsize int, elemalg int, - // hint int) (hmap *chan[any-1]); - - t = fixchan(n->type); - if(t == T) - break; - - if(cl == 1) - a = conv(n->list->n, types[TINT]); - else - a = nodintconst(0); - r = mkcall1(chanfn("newchan", 1, t), n->type, init, - nodintconst(t->type->width), - nodintconst(algtype(t->type)), - a); - break; - case OAS2: cl = count(n->list); cr = count(n->rlist); @@ -2278,45 +1954,6 @@ chanop(Node *n, NodeList **init) r = n; walkexpr(&r, init); break; - - case ORECV: - // should not happen - nonblocking is OAS w/ ORECV now. - if(n->right != N) { - dump("recv2", n); - fatal("chanop recv2"); - } - - // chanrecv1(hchan *chan any) (elem any); - t = fixchan(n->left->type); - if(t == T) - break; - if(!(t->chan & Crecv)) { - yyerror("cannot receive from %T", t); - break; - } - - r = mkcall1(chanfn("chanrecv1", 2, t), n->type, init, n->left); - break; - - case OSEND: - t = fixchan(n->left->type); - if(t == T) - break; - if(!(t->chan & Csend)) { - yyerror("cannot send to %T", t); - break; - } - if(n->etype == 1) // clumsy hack - goto send2; - - // chansend1(hchan *chan any, elem any); - r = mkcall1(chanfn("chansend1", 2, t), T, init, n->left, n->right); - break; - - send2: - // chansend2(hchan *chan any, val any) (pres bool); - r = mkcall1(chanfn("chansend2", 2, t), n->type, init, n->left, n->right); - break; } return r; @@ -2325,6 +1962,7 @@ shape: return N; } + Type* fixarray(Type *t) { @@ -2344,104 +1982,6 @@ bad: } -Node* -arrayop(Node *n) -{ - Node *r, *nel, *max; - NodeList *args; - Type *t, *tl; - Node *fn; - int cl; - - r = n; - switch(n->op) { - default: - fatal("darrayop: unknown op %O", n->op); - - case OCONVNOP: - return n; - - case OCONV: - // arrays2d(old *any, nel int) (ary []any) - if(n->left->type == T || !isptr[n->left->type->etype]) - break; - t = fixarray(n->left->type->type); - tl = fixarray(n->type); - if(t == T || tl == T) - break; - - fn = syslook("arrays2d", 1); - argtype(fn, t); // any-1 - argtype(fn, tl->type); // any-2 - - n->left = mkcall1(fn, n->type, nil, n->left, nodintconst(t->bound)); - typecheck(&n, Erv); - walkexpr(&n, nil); - return n; - - case OAS: - n->right = arrayop(conv(n->right, n->left->type)); - return n; - - case OMAKE: - cl = count(n->list); - if(cl > 2) - yyerror("too many arguments to make array"); - - // newarray(nel int, max int, width int) (ary []any) - t = fixarray(n->type); - if(t == T) - break; - fn = syslook("newarray", 1); - argtype(fn, t->type); // any-1 - - nel = conv(n->list->n, types[TINT]); - if(cl < 2) - max = nodintconst(0); - else - max = conv(n->list->next->n, types[TINT]); - r = mkcall1(fn, n->type, nil, - nel, max, nodintconst(t->type->width)); - break; - - case OSLICE: - // arrayslices(old any, nel int, lb int, hb int, width int) (ary []any) - // arraysliced(old []any, lb int, hb int, width int) (ary []any) - - t = fixarray(n->left->type); - if(t == T) - break; - - if(t->bound >= 0) { - // static slice - args = list1(nod(OADDR, n->left, N)); // old - args = list(args, nodintconst(t->bound)); // nel - - fn = syslook("arrayslices", 1); - argtype(fn, t); // any-1 - argtype(fn, t->type); // any-2 - } else { - // dynamic slice - args = list1(n->left); // old - - fn = syslook("arraysliced", 1); - argtype(fn, t->type); // any-1 - argtype(fn, t->type); // any-2 - } - - args = list(args, conv(n->right->left, types[TINT])); // lb - args = list(args, conv(n->right->right, types[TINT])); // hb - args = list(args, nodintconst(t->type->width)); // width - - r = nod(OCALL, fn, N); - r->list = args; - typecheck(&r, Erv); - walkexpr(&r, nil); - break; - } - return r; -} - /* * assigning src to dst involving interfaces? * return op to use. @@ -2520,7 +2060,7 @@ ifacename[] = }; Node* -ifacecvt(Type *tl, Node *n, int et) +ifacecvt(Type *tl, Node *n, int et, NodeList **init) { Type *tr; Node *r, *on; @@ -2532,6 +2072,10 @@ ifacecvt(Type *tl, Node *n, int et) default: fatal("ifacecvt: unknown op %d\n", et); + case I2Isame: + case E2Esame: + return n; + case T2I: // ifaceT2I(sigi *byte, sigt *byte, elem any) (ret any); args = list1(typename(tl)); // sigi @@ -2541,6 +2085,7 @@ ifacecvt(Type *tl, Node *n, int et) on = syslook("ifaceT2I", 1); argtype(on, tr); argtype(on, tl); + dowidth(on->type); break; case I2T: @@ -2586,45 +2131,10 @@ ifacecvt(Type *tl, Node *n, int et) r = nod(OCALL, on, N); r->list = args; typecheck(&r, Erv); - walkexpr(&r, nil); + walkexpr(&r, init); return r; } -Node* -ifaceop(Node *n) -{ - Node *r, *on; - NodeList *args; - - switch(n->op) { - default: - fatal("ifaceop %O", n->op); - - case OEQ: - case ONE: - // ifaceeq(i1 any-1, i2 any-2) (ret bool); - args = list1(n->left); // i1 - args = list(args, n->right); // i2 - - if(!eqtype(n->left->type, n->right->type)) - fatal("ifaceop %O %T %T", n->op, n->left->type, n->right->type); - if(isnilinter(n->left->type)) - on = syslook("efaceeq", 1); - else - on = syslook("ifaceeq", 1); - argtype(on, n->right->type); - argtype(on, n->left->type); - - r = nod(OCALL, on, N); - r->list = args; - if(n->op == ONE) - r = nod(ONOT, r, N); - typecheck(&r, Erv); - walkexpr(&r, nil); - return r; - } -} - Node* convas(Node *n, NodeList **init) { @@ -2634,6 +2144,7 @@ convas(Node *n, NodeList **init) if(n->op != OAS) fatal("convas: not OAS %O", n->op); + n->typecheck = 1; lt = T; rt = T; @@ -2648,38 +2159,23 @@ convas(Node *n, NodeList **init) if(lt == T || rt == T) goto out; - if(n->left->op == OINDEX) - if(istype(n->left->left->type, TMAP)) { + if(n->left->op == OINDEXMAP) { n = mapop(n, init); goto out; } - if(n->left->op == OSEND) - if(n->left->type != T) { - n = chanop(n, init); - goto out; - } - if(eqtype(lt, rt)) goto out; et = ifaceas(lt, rt, 0); if(et != Inone) { - n->right = ifacecvt(lt, r, et); - goto out; - } - - if(isslice(lt) && isptr[rt->etype] && isfixedarray(rt->type)) { - if(!eqtype(lt->type->type, rt->type->type->type)) - goto bad; - n = arrayop(n); + n->right = ifacecvt(lt, r, et, init); goto out; } if(ascompat(lt, rt)) goto out; -bad: badtype(n->op, lt, rt); out: @@ -2897,15 +2393,13 @@ multi: default: goto badt; - case OINDEX: + case OINDEXMAP: // check if rhs is a map index. // if so, types are valuetype,bool if(cl != 2) goto badt; walkexpr(&nr->left, &init); t = nr->left->type; - if(!istype(t, TMAP)) - goto badt; a = mixedoldnew(ll->n, t->type); n = list1(a); a = mixedoldnew(ll->next->n, types[TBOOL]); @@ -3387,38 +2881,13 @@ reorder4(NodeList *ll) return ll; } -static void -fielddup(Node *n, Node *hash[], ulong nhash) -{ - uint h; - char *s; - Node *a; - - if(n->op != ONAME) - fatal("fielddup: not ONAME"); - s = n->sym->name; - h = stringhash(s)%nhash; - for(a=hash[h]; a!=N; a=a->ntest) { - if(strcmp(a->sym->name, s) == 0) { - yyerror("duplicate field name in struct literal: %s", s); - return; - } - } - n->ntest = hash[h]; - hash[h] = n; -} - Node* structlit(Node *n, Node *var, NodeList **init) { - Iter savel; - Type *l, *t; + Type *t; Node *r, *a; - Node* hash[101]; NodeList *nl; - int nerr; - nerr = nerrors; t = n->type; if(t->etype != TSTRUCT) fatal("structlit: not struct"); @@ -3429,141 +2898,45 @@ structlit(Node *n, Node *var, NodeList **init) } nl = n->list; - if(nl == nil || nl->n->op == OKEY) - goto keyval; - l = structfirst(&savel, &n->type); - for(; nl; nl=nl->next) { - r = nl->n; - // assignment to every field - if(l == T) - break; - if(r->op == OKEY) { - yyerror("mixture of value and field:value initializers"); - return var; - } - - // build list of var.field = expr - a = nod(ODOT, var, newname(l->sym)); - a = nod(OAS, a, r); + if(count(n->list) < structcount(t)) { + a = nod(OAS, var, N); typecheck(&a, Etop); walkexpr(&a, init); - if(nerr != nerrors) - return var; *init = list(*init, a); - - l = structnext(&savel); } - if(l != T) - yyerror("struct literal expect expr of type %T", l); - if(nl != nil) - yyerror("struct literal too many expressions"); - return var; - -keyval: - memset(hash, 0, sizeof(hash)); - a = nod(OAS, var, N); - typecheck(&a, Etop); - walkexpr(&a, init); - *init = list(*init, a); for(; nl; nl=nl->next) { r = nl->n; - // assignment to field:value elements - if(r->op != OKEY) { - yyerror("mixture of field:value and value initializers"); - break; - } - // build list of var.field = expr a = nod(ODOT, var, newname(r->left->sym)); - fielddup(a->right, hash, nelem(hash)); - if(nerr != nerrors) - break; - a = nod(OAS, a, r->right); typecheck(&a, Etop); walkexpr(&a, init); - if(nerr != nerrors) - break; - *init = list(*init, a); } return var; } -static void -indexdup(Node *n, Node *hash[], ulong nhash) -{ - uint h; - Node *a; - ulong b, c; - - if(n->op != OLITERAL) - fatal("indexdup: not OLITERAL"); - - b = mpgetfix(n->val.u.xval); - h = b%nhash; - for(a=hash[h]; a!=N; a=a->ntest) { - c = mpgetfix(a->val.u.xval); - if(b == c) { - yyerror("duplicate index in array literal: %ld", b); - return; - } - } - n->ntest = hash[h]; - hash[h] = n; -} - Node* arraylit(Node *n, Node *var, NodeList **init) { Type *t; Node *r, *a; NodeList *l; - long ninit, b; - Node* hash[101]; - int nerr; - nerr = nerrors; t = n->type; - if(t->etype != TARRAY) - fatal("arraylit: not array"); - - // find max index - ninit = 0; - b = 0; - - for(l=n->list; l; l=l->next) { - r = l->n; - if(r->op == OKEY) { - evconst(r->left); - b = nonnegconst(r->left); - } - b++; - if(b > ninit) - ninit = b; - } - - b = t->bound; - if(b == -100) { - // flag for [...] - b = ninit; - if(var == N) - t = shallow(t); - t->bound = b; - } if(var == N) { var = nod(OXXX, N, N); tempname(var, t); } - if(b < 0) { + if(t->bound < 0) { // slice a = nod(OMAKE, N, N); - a->list = list(list1(typenod(t)), nodintconst(ninit)); + a->list = list(list1(typenod(t)), n->right); a = nod(OAS, var, a); typecheck(&a, Etop); walkexpr(&a, init); @@ -3571,7 +2944,7 @@ arraylit(Node *n, Node *var, NodeList **init) } else { // if entire array isnt initialized, // then clear the array - if(ninit < b) { + if(count(n->list) < t->bound) { a = nod(OAS, var, N); typecheck(&a, Etop); walkexpr(&a, init); @@ -3579,98 +2952,19 @@ arraylit(Node *n, Node *var, NodeList **init) } } - b = 0; - memset(hash, 0, sizeof(hash)); for(l=n->list; l; l=l->next) { r = l->n; // build list of var[c] = expr - if(r->op == OKEY) { - b = nonnegconst(r->left); - if(b < 0) { - yyerror("array index must be non-negative constant"); - break; - } - r = r->right; - } - - if(t->bound >= 0 && b > t->bound) { - yyerror("array index out of bounds"); - break; - } - - a = nodintconst(b); - indexdup(a, hash, nelem(hash)); - if(nerr != nerrors) - break; - - a = nod(OINDEX, var, a); - a = nod(OAS, a, r); + a = nod(OINDEX, var, r->left); + a = nod(OAS, a, r->right); typecheck(&a, Etop); walkexpr(&a, init); // add any assignments in r to top - if(nerr != nerrors) - break; - *init = list(*init, a); - b++; } + return var; } -static void -keydup(Node *n, Node *hash[], ulong nhash) -{ - uint h; - ulong b; - double d; - int i; - Node *a; - Node cmp; - char *s; - - evconst(n); - if(n->op != OLITERAL) - return; // we dont check variables - - switch(n->val.ctype) { - default: // unknown, bool, nil - b = 23; - break; - case CTINT: - b = mpgetfix(n->val.u.xval); - break; - case CTFLT: - d = mpgetflt(n->val.u.fval); - s = (char*)&d; - b = 0; - for(i=sizeof(d); i>0; i--) - b = b*PRIME1 + *s++; - break; - case CTSTR: - b = 0; - s = n->val.u.sval->s; - for(i=n->val.u.sval->len; i>0; i--) - b = b*PRIME1 + *s++; - break; - } - - h = b%nhash; - memset(&cmp, 0, sizeof(cmp)); - for(a=hash[h]; a!=N; a=a->ntest) { - cmp.op = OEQ; - cmp.left = n; - cmp.right = a; - evconst(&cmp); - b = cmp.val.u.bval; - if(b) { - // too lazy to print the literal - yyerror("duplicate key in map literal"); - return; - } - } - n->ntest = hash[h]; - hash[h] = n; -} - Node* maplit(Node *n, Node *var, NodeList **init) { @@ -3700,16 +2994,7 @@ maplit(Node *n, Node *var, NodeList **init) memset(hash, 0, sizeof(hash)); for(l=n->list; l; l=l->next) { r = l->n; - if(r->op != OKEY) { - yyerror("map literal must have key:value pairs"); - break; - } - // build list of var[c] = expr - keydup(r->left, hash, nelem(hash)); - if(nerr != nerrors) - break; - a = nod(OINDEX, var, r->left); a = nod(OAS, a, r->right); typecheck(&a, Etop); @@ -3722,72 +3007,6 @@ maplit(Node *n, Node *var, NodeList **init) return var; } -/* - * the address of n has been taken and might be used after - * the current function returns. mark any local vars - * as needing to move to the heap. - */ -void -addrescapes(Node *n) -{ - char buf[100]; - switch(n->op) { - default: - // probably a type error already. - // dump("addrescapes", n); - break; - - case ONAME: - if(n->noescape) - break; - switch(n->class) { - case PPARAMOUT: - yyerror("cannot take address of out parameter %s", n->sym->name); - break; - case PAUTO: - case PPARAM: - // if func param, need separate temporary - // to hold heap pointer. - if(n->class == PPARAM) { - // expression to refer to stack copy - n->stackparam = nod(OPARAM, n, N); - n->stackparam->type = n->type; - n->stackparam->addable = 1; - n->stackparam->xoffset = n->xoffset; - } - - n->class |= PHEAP; - n->addable = 0; - n->ullman = 2; - n->alloc = callnew(n->type); - n->xoffset = 0; - - // create stack variable to hold pointer to heap - n->heapaddr = nod(0, N, N); - tempname(n->heapaddr, ptrto(n->type)); - snprint(buf, sizeof buf, "&%S", n->sym); - n->heapaddr->sym = lookup(buf); - break; - } - break; - - case OIND: - case ODOTPTR: - break; - - case ODOT: - case OINDEX: - // ODOTPTR has already been introduced, - // so these are the non-pointer ODOT and OINDEX. - // In &x[0], if x is a slice, then x does not - // escape--the pointer inside x does, but that - // is always a heap pointer anyway. - if(!isslice(n->left->type)) - addrescapes(n->left); - break; - } -} - /* * walk through argin parameters. * generate and return code to allocate @@ -3843,7 +3062,7 @@ vmkcall(Node *fn, Type *t, NodeList **init, va_list va) n = fn->type->intuple; for(i=0; ilist = args; if(fn->type->outtuple > 0) @@ -3860,7 +3079,7 @@ mkcall(char *name, Type *t, NodeList **init, ...) { Node *r; va_list va; - + va_start(va, init); r = vmkcall(syslook(name, 0), t, init, va); va_end(va); @@ -3872,7 +3091,7 @@ mkcall1(Node *fn, Type *t, NodeList **init, ...) { Node *r; va_list va; - + va_start(va, init); r = vmkcall(fn, t, init, va); va_end(va); @@ -3887,7 +3106,6 @@ conv(Node *n, Type *t) n = nod(OCONV, n, N); n->type = t; typecheck(&n, Erv); - walkexpr(&n, nil); return n; } diff --git a/test/chan/perm.go b/test/chan/perm.go index cdbef6246c..b19cbf3261 100644 --- a/test/chan/perm.go +++ b/test/chan/perm.go @@ -15,10 +15,10 @@ var ( func main() { cr = c; // ok cs = c; // ok - c = cr; // ERROR "illegal types|incompatible" - c = cs; // ERROR "illegal types|incompatible" - cr = cs; // ERROR "illegal types|incompatible" - cs = cr; // ERROR "illegal types|incompatible" + c = cr; // ERROR "illegal types|incompatible|cannot" + c = cs; // ERROR "illegal types|incompatible|cannot" + cr = cs; // ERROR "illegal types|incompatible|cannot" + cs = cr; // ERROR "illegal types|incompatible|cannot" c <- 0; // ok ok := c <- 0; // ok diff --git a/test/const1.go b/test/const1.go index 0d48ada5e2..622b837a54 100644 --- a/test/const1.go +++ b/test/const1.go @@ -65,15 +65,15 @@ var ( func f(int); func main() { - f(Int8); // ERROR "convert|wrong type" - f(Minus1); // ERROR "convert|wrong type" - f(Uint8); // ERROR "convert|wrong type" + f(Int8); // ERROR "convert|wrong type|cannot" + f(Minus1); // ERROR "convert|wrong type|cannot" + f(Uint8); // ERROR "convert|wrong type|cannot" f(Const); // OK - f(Float32); // ERROR "convert|wrong type" - f(Float); // ERROR "convert|wrong type" + f(Float32); // ERROR "convert|wrong type|cannot" + f(Float); // ERROR "convert|wrong type|cannot" f(ConstFloat); // ERROR "truncate" f(ConstFloat - 0.5); // OK - f(Big); // ERROR "convert|wrong type" - f(String); // ERROR "convert|wrong type" - f(Bool); // ERROR "convert|wrong type" + f(Big); // ERROR "convert|wrong type|cannot" + f(String); // ERROR "convert|wrong type|cannot" + f(Bool); // ERROR "convert|wrong type|cannot" } diff --git a/test/convert3.go b/test/convert3.go index d733ce2c30..cb05000128 100644 --- a/test/convert3.go +++ b/test/convert3.go @@ -21,5 +21,5 @@ var g = []int(nil) type H *[4]int type J []int var h H -var j1 J = h // ERROR "compat|illegal" +var j1 J = h // ERROR "compat|illegal|cannot|cannot" var j2 = J(h) diff --git a/test/convlit.go b/test/convlit.go index be12e63835..e65dad3df6 100644 --- a/test/convlit.go +++ b/test/convlit.go @@ -19,11 +19,11 @@ var x7 = float(1e1000); // ERROR "overflow" // implicit conversions merit scrutiny var s string; -var bad1 string = 1; // ERROR "conver|incompatible" -var bad2 = s + 1; // ERROR "conver|incompatible" -var bad3 = s + 'a'; // ERROR "conver|incompatible" -var bad4 = "a" + 1; // ERROR "literals|incompatible|convert" -var bad5 = "a" + 'a'; // ERROR "literals|incompatible|convert" +var bad1 string = 1; // ERROR "conver|incompatible|invalid|cannot" +var bad2 = s + 1; // ERROR "conver|incompatible|invalid" +var bad3 = s + 'a'; // ERROR "conver|incompatible|invalid" +var bad4 = "a" + 1; // ERROR "literals|incompatible|convert|invalid" +var bad5 = "a" + 'a'; // ERROR "literals|incompatible|convert|invalid" var bad6 int = 1.5; // ERROR "convert|truncate" var bad7 int = 1e100; // ERROR "overflow" diff --git a/test/convlit1.go b/test/convlit1.go index 94d28969b7..1e6673cb64 100644 --- a/test/convlit1.go +++ b/test/convlit1.go @@ -6,12 +6,12 @@ package main -var a = []int { "a" }; // ERROR "conver|incompatible" +var a = []int { "a" }; // ERROR "conver|incompatible|cannot" var b = int { 1 }; // ERROR "compos" func f() int func main() { - if f < 1 { } // ERROR "conver|incompatible" + if f < 1 { } // ERROR "conver|incompatible|invalid" } diff --git a/test/fixedbugs/bug022.go b/test/fixedbugs/bug022.go index 7964148707..0250135a52 100644 --- a/test/fixedbugs/bug022.go +++ b/test/fixedbugs/bug022.go @@ -9,7 +9,7 @@ package main func putint(digits *string) { var i byte; i = (*digits)[7]; // compiles - i = digits[7]; // ERROR "illegal|is not" + i = digits[7]; // ERROR "illegal|is not|invalid" } func main() { diff --git a/test/fixedbugs/bug062.go b/test/fixedbugs/bug062.go index 8a9ba959ec..4346c5a5f9 100644 --- a/test/fixedbugs/bug062.go +++ b/test/fixedbugs/bug062.go @@ -7,5 +7,5 @@ package main func main() { - var s string = nil; // ERROR "illegal|invalid" + var s string = nil; // ERROR "illegal|invalid|cannot" } diff --git a/test/fixedbugs/bug090.go b/test/fixedbugs/bug090.go index 50e08b7f58..8318ab9c0c 100644 --- a/test/fixedbugs/bug090.go +++ b/test/fixedbugs/bug090.go @@ -38,9 +38,9 @@ func main() { assert(i != f3div2, "i != f3div2"); // ERROR "truncate" const g float64 = 1.0; - i = g; // ERROR "convert|incompatible" + i = g; // ERROR "convert|incompatible|cannot" const h float64 = 3.14; - i = h; // ERROR "convert|incompatible" + i = h; // ERROR "convert|incompatible|cannot" i = int(h); // ERROR "truncate" } diff --git a/test/fixedbugs/bug121.go b/test/fixedbugs/bug121.go index 5840095b9c..6473fa995a 100644 --- a/test/fixedbugs/bug121.go +++ b/test/fixedbugs/bug121.go @@ -10,16 +10,6 @@ type T func() type I interface { f, g (); - h T; // should only allow FunctionType here + h T; // ERROR "syntax" } -type S struct { -} - -func (s *S) f() {} -func (s *S) g() {} -func (s *S) h() {} // here we can't write (s *S) T either - -func main() { - var i I = new(S); -} diff --git a/test/fixedbugs/bug131.go b/test/fixedbugs/bug131.go index 376f528f65..c2644c4a3f 100644 --- a/test/fixedbugs/bug131.go +++ b/test/fixedbugs/bug131.go @@ -8,5 +8,5 @@ package main func main() { const a uint64 = 10; - var b int64 = a; // ERROR "convert" + var b int64 = a; // ERROR "convert|cannot" } diff --git a/test/fixedbugs/bug146.go b/test/fixedbugs/bug146.go index aef8476453..41a6d3afd9 100644 --- a/test/fixedbugs/bug146.go +++ b/test/fixedbugs/bug146.go @@ -10,5 +10,5 @@ func main() { type Slice []byte; a := [...]byte{ 0 }; b := Slice(&a); // This should be OK. - c := Slice(a); // ERROR "invalid|illegal" + c := Slice(a); // ERROR "invalid|illegal|cannot" } diff --git a/test/fixedbugs/bug170.go b/test/fixedbugs/bug170.go index b04e771871..e7f1c5120d 100644 --- a/test/fixedbugs/bug170.go +++ b/test/fixedbugs/bug170.go @@ -5,9 +5,10 @@ // license that can be found in the LICENSE file. package main -var v1 = ([10]int)(nil) // ERROR "illegal|nil|invalid" -var v2 [10]int = nil // ERROR "illegal|nil|incompatible" -var v3 [10]int +var v1 = ([10]int)(nil); // ERROR "illegal|nil|invalid" +var v2 [10]int = nil; // ERROR "illegal|nil|incompatible" +var v3 [10]int; +var v4 = nil; // ERROR "nil" func main() { v3 = nil; // ERROR "illegal|nil|incompatible" } diff --git a/test/func4.go b/test/func4.go index f9e394fdf7..bcf5b93fa4 100644 --- a/test/func4.go +++ b/test/func4.go @@ -9,6 +9,6 @@ package main var notmain func() func main() { - var x = &main; // ERROR "address of function|invalid" - main = notmain; // ERROR "assign to function|invalid" + var x = &main; // ERROR "address of|invalid" + main = notmain; // ERROR "assign to|invalid" } diff --git a/test/golden.out b/test/golden.out index ca01bd2a66..d1403736b9 100644 --- a/test/golden.out +++ b/test/golden.out @@ -132,13 +132,6 @@ throw: interface conversion panic PC=xxx -=========== fixedbugs/bug121.go -fixedbugs/bug121.go:9: syntax error near T -fixedbugs/bug121.go:20: incomplete type I -fixedbugs/bug121.go:20: illegal types for operand: AS - I - *S - =========== fixedbugs/bug148.go 2 3 interface is main.T, not main.T·bug148·1 diff --git a/test/interface/pointer.go b/test/interface/pointer.go index 202c37d860..d94ec7cada 100644 --- a/test/interface/pointer.go +++ b/test/interface/pointer.go @@ -32,6 +32,6 @@ func AddInst(Inst) *Inst { func main() { re := new(Regexp); print("call addinst\n"); - var x Inst = AddInst(new(Start)); // ERROR "illegal|incompatible" + var x Inst = AddInst(new(Start)); // ERROR "illegal|incompatible|is not" print("return from addinst\n"); }