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// 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)
}
}
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