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cmd/8g: fix erroneous LEAL nil.

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Fixes #4399.

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/6845053
This commit is contained in:
Rémy Oudompheng 2012-11-21 08:39:45 +01:00
parent d28133dc9f
commit 1bd4a7dbcb
3 changed files with 24 additions and 6 deletions
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13
src/cmd/8g/cgen.c
View file

@ -827,16 +827,19 @@ igen(Node *n, Node *a, Node *res)
return;
case ODOTPTR:
if(n->left->addable
|| n->left->op == OCALLFUNC
|| n->left->op == OCALLMETH
|| n->left->op == OCALLINTER) {
switch(n->left->op) {
case ODOT:
case ODOTPTR:
case OCALLFUNC:
case OCALLMETH:
case OCALLINTER:
// igen-able nodes.
igen(n->left, &n1, res);
regalloc(a, types[tptr], &n1);
gmove(&n1, a);
regfree(&n1);
} else {
break;
default:
regalloc(a, types[tptr], res);
cgen(n->left, a);
}

2
src/cmd/8g/gsubr.c
View file

@ -1747,7 +1747,7 @@ gins(int as, Node *f, Node *t)
case ALEAL:
if(f != N && isconst(f, CTNIL))
fatal("gins LEAQ nil %T", f->type);
fatal("gins LEAL nil %T", f->type);
break;
}

15
test/fixedbugs/issue4399.go Normal file
View file

@ -0,0 +1,15 @@
// compile
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Issue 4399: 8g would print "gins LEAQ nil *A".
package main
type A struct{ a int }
func main() {
println(((*A)(nil)).a)
}