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https://github.com/golang/go
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48 lines
992 B
Go
48 lines
992 B
Go
// Copyright 2012 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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// Issue 3729: cmd/cgo: access errno from void C function
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// void f(void) returns [0]byte, error in Go world.
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// +build !windows
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package cgotest
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/*
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#include <errno.h>
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void g(void) {
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errno = E2BIG;
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}
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// try to pass some non-trivial arguments to function g2
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const char _expA = 0x42;
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const float _expB = 3.14159;
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const short _expC = 0x55aa;
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const int _expD = 0xdeadbeef;
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void g2(int x, char a, float b, short c, int d) {
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if (a == _expA && b == _expB && c == _expC && d == _expD)
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errno = x;
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else
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errno = -1;
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}
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*/
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import "C"
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import (
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"syscall"
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"testing"
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)
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func test3729(t *testing.T) {
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_, e := C.g()
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if e != syscall.E2BIG {
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t.Errorf("got %q, expect %q", e, syscall.E2BIG)
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}
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_, e = C.g2(C.EINVAL, C._expA, C._expB, C._expC, C._expD)
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if e != syscall.EINVAL {
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t.Errorf("got %q, expect %q", e, syscall.EINVAL)
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}
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}
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