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X ,s;^// \$G (\$D/)?\$F\.go *$;// compile;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A *$;// build;g X ,s;^// \$G (\$D/)?\$F\.go && \$L \$F\.\$A && \./\$A\.out *$;// run;g X ,s;^// errchk \$G( -e)? (\$D/)?\$F\.go *$;// errorcheck;g R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5656083
192 lines
3.5 KiB
Go
192 lines
3.5 KiB
Go
// errorcheck
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test cases for revised conversion rules.
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package main
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func main() {
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type NewInt int
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i0 := 0
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var i1 int = 1
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var i2 NewInt = 1
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i0 = i0
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i0 = i1
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i0 = int(i2)
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i1 = i0
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i1 = i1
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i1 = int(i2)
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i2 = NewInt(i0)
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i2 = NewInt(i1)
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i2 = i2
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type A1 [3]int
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type A2 [3]NewInt
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var a0 [3]int
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var a1 A1
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var a2 A2
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a0 = a0
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a0 = a1
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a0 = [3]int(a2) // ERROR "cannot|invalid"
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a1 = a0
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a1 = a1
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a1 = A1(a2) // ERROR "cannot|invalid"
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a2 = A2(a0) // ERROR "cannot|invalid"
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a2 = A2(a1) // ERROR "cannot|invalid"
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a2 = a2
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type S1 struct {
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x int
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}
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type S2 struct {
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x NewInt
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}
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var s0 struct {
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x int
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}
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var s1 S1
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var s2 S2
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s0 = s0
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s0 = s1
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s0 = struct {
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x int
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}(s2) // ERROR "cannot|invalid"
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s1 = s0
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s1 = s1
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s1 = S1(s2) // ERROR "cannot|invalid"
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s2 = S2(s0) // ERROR "cannot|invalid"
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s2 = S2(s1) // ERROR "cannot|invalid"
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s2 = s2
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type P1 *int
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type P2 *NewInt
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var p0 *int
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var p1 P1
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var p2 P2
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p0 = p0
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p0 = p1
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p0 = (*int)(p2) // ERROR "cannot|invalid"
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p1 = p0
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p1 = p1
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p1 = P1(p2) // ERROR "cannot|invalid"
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p2 = P2(p0) // ERROR "cannot|invalid"
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p2 = P2(p1) // ERROR "cannot|invalid"
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p2 = p2
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type Q1 *struct {
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x int
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}
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type Q2 *S1
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var q0 *struct {
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x int
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}
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var q1 Q1
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var q2 Q2
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var ps1 *S1
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q0 = q0
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q0 = q1
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q0 = (*struct {
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x int
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})(ps1) // legal because of special conversion exception for pointers
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q0 = (*struct {
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x int
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})(q2) // ERROR "cannot|invalid"
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q1 = q0
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q1 = q1
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q1 = Q1(q2) // ERROR "cannot|invalid"
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q2 = (*S1)(q0) // legal because of special conversion exception for pointers
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q2 = Q2(q1) // ERROR "cannot|invalid"
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q2 = q2
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type F1 func(x NewInt) int
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type F2 func(x int) NewInt
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var f0 func(x NewInt) int
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var f1 F1
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var f2 F2
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f0 = f0
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f0 = f1
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f0 = func(x NewInt) int(f2) // ERROR "cannot|invalid"
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f1 = f0
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f1 = f1
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f1 = F1(f2) // ERROR "cannot|invalid"
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f2 = F2(f0) // ERROR "cannot|invalid"
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f2 = F2(f1) // ERROR "cannot|invalid"
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f2 = f2
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type X1 interface {
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f() int
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}
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type X2 interface {
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f() NewInt
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}
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var x0 interface {
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f() int
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}
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var x1 X1
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var x2 X2
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x0 = x0
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x0 = x1
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x0 = interface {
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f() int
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}(x2) // ERROR "cannot|need type assertion|incompatible"
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x1 = x0
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x1 = x1
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x1 = X1(x2) // ERROR "cannot|need type assertion|incompatible"
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x2 = X2(x0) // ERROR "cannot|need type assertion|incompatible"
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x2 = X2(x1) // ERROR "cannot|need type assertion|incompatible"
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x2 = x2
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type L1 []int
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type L2 []NewInt
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var l0 []int
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var l1 L1
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var l2 L2
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l0 = l0
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l0 = l1
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l0 = []int(l2) // ERROR "cannot|invalid"
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l1 = l0
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l1 = l1
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l1 = L1(l2) // ERROR "cannot|invalid"
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l2 = L2(l0) // ERROR "cannot|invalid"
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l2 = L2(l1) // ERROR "cannot|invalid"
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l2 = l2
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type M1 map[string]int
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type M2 map[string]NewInt
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var m0 []int
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var m1 L1
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var m2 L2
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m0 = m0
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m0 = m1
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m0 = []int(m2) // ERROR "cannot|invalid"
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m1 = m0
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m1 = m1
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m1 = L1(m2) // ERROR "cannot|invalid"
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m2 = L2(m0) // ERROR "cannot|invalid"
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m2 = L2(m1) // ERROR "cannot|invalid"
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m2 = m2
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type C1 chan int
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type C2 chan NewInt
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var c0 chan int
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var c1 C1
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var c2 C2
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c0 = c0
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c0 = c1
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c0 = chan int(c2) // ERROR "cannot|invalid"
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c1 = c0
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c1 = c1
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c1 = C1(c2) // ERROR "cannot|invalid"
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c2 = C2(c0) // ERROR "cannot|invalid"
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c2 = C2(c1) // ERROR "cannot|invalid"
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c2 = c2
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// internal compiler error (6g and gccgo)
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type T interface{}
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var _ T = 17 // assignment compatible
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_ = T(17) // internal compiler error even though assignment compatible
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}
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