Adding upstream version 1.16.10.upstream/1.16.10upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/misc/cgo/testso/testdata/cgoso_c.c b/misc/cgo/testso/testdata/cgoso_c.c
new file mode 100644
index 0000000..e5015ed
--- /dev/null
+++ b/misc/cgo/testso/testdata/cgoso_c.c
@@ -0,0 +1,39 @@
+// 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);
+#elif defined(_AIX)
+// AIX doesn't allow the creation of a shared object with an
+// undefined symbol. It's possible to bypass this problem by
+// using -Wl,-G and -Wl,-brtl option which allows run-time linking.
+// However, that's not how most of AIX shared object works.
+// Therefore, it's better to consider goCallback as a pointer and
+// to set up during an init function.
+void (*goCallback)(void);
+void setCallback(void *f) { goCallback = f; }
+#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();
+}