mirror of
https://github.com/golang/go
synced 2024-11-24 16:50:13 -07:00
48 lines
992 B
Go
48 lines
992 B
Go
|
// 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)
|
||
|
|
}
|
||
|
|
}
|