diff options
Diffstat (limited to 'misc/cgo/test/issue3729.go')
-rw-r--r-- | misc/cgo/test/issue3729.go | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/misc/cgo/test/issue3729.go b/misc/cgo/test/issue3729.go new file mode 100644 index 000000000..1bea38b6e --- /dev/null +++ b/misc/cgo/test/issue3729.go @@ -0,0 +1,47 @@ +// 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 3729: cmd/cgo: access errno from void C function +// void f(void) returns [0]byte, error in Go world. + +// +build !windows + +package cgotest + +/* +#include <errno.h> + +void g(void) { + errno = E2BIG; +} + +// try to pass some non-trivial arguments to function g2 +const char _expA = 0x42; +const float _expB = 3.14159; +const short _expC = 0x55aa; +const int _expD = 0xdeadbeef; +void g2(int x, char a, float b, short c, int d) { + if (a == _expA && b == _expB && c == _expC && d == _expD) + errno = x; + else + errno = -1; +} +*/ +import "C" + +import ( + "syscall" + "testing" +) + +func test3729(t *testing.T) { + _, e := C.g() + if e != syscall.E2BIG { + t.Errorf("got %q, expect %q", e, syscall.E2BIG) + } + _, e = C.g2(C.EINVAL, C._expA, C._expB, C._expC, C._expD) + if e != syscall.EINVAL { + t.Errorf("got %q, expect %q", e, syscall.EINVAL) + } +} |