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go/misc/cgo/testso/cgoso_c.c
Shenghou Ma bcf3d55ed9 misc/cgo/testso: don't use TLS variables on Darwin and OpenBSD.
Fix build for 10.6 Darwin builders and OpenBSD builers.

LGTM=jsing
R=golang-codereviews, dave, jsing
CC=golang-codereviews
https://golang.org/cl/67710043
2014-02-23 20:37:43 -05:00

31 lines
766 B
C

// Copyright 2011 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.
// +build ignore
#ifdef WIN32
// A Windows DLL is unable to call an arbitrary function in
// the main executable. Work around that by making the main
// executable pass the callback function pointer to us.
void (*goCallback)(void);
__declspec(dllexport) void setCallback(void *f)
{
goCallback = (void (*)())f;
}
__declspec(dllexport) void sofunc(void);
#else
extern void goCallback(void);
void setCallback(void *f) { (void)f; }
#endif
// OpenBSD and older Darwin lack TLS support
#if !defined(__OpenBSD__) && !defined(__APPLE__)
__thread int tlsvar = 12345;
#endif
void sofunc(void)
{
goCallback();
}