diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/go.test/test/interface/fail.go')
-rw-r--r-- | gcc-4.9/gcc/testsuite/go.test/test/interface/fail.go | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/go.test/test/interface/fail.go b/gcc-4.9/gcc/testsuite/go.test/test/interface/fail.go new file mode 100644 index 000000000..81eb6cb3c --- /dev/null +++ b/gcc-4.9/gcc/testsuite/go.test/test/interface/fail.go @@ -0,0 +1,53 @@ +// run + +// Copyright 2009 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. + +// Test that interface conversion fails when method is missing. + +package main + +type I interface { + Foo() +} + +func main() { + shouldPanic(p1) + shouldPanic(p2) +} + +func p1() { + var s *S + var i I + var e interface{} + e = s + i = e.(I) + _ = i +} + +type S struct{} + +func (s *S) _() {} + +type B interface { + _() +} + +func p2() { + var s *S + var b B + var e interface{} + e = s + b = e.(B) + _ = b +} + +func shouldPanic(f func()) { + defer func() { + if recover() == nil { + panic("function should panic") + } + }() + f() +} |