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go/misc/cgo/test/issue3775.go

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package cgotest
/*
void lockOSThreadCallback(void);
inline static void lockOSThreadC(void)
{
lockOSThreadCallback();
}
int usleep(unsigned usec);
*/
import "C"
import (
"runtime"
"testing"
)
func test3775(t *testing.T) {
// Used to panic because of the UnlockOSThread below.
C.lockOSThreadC()
}
//export lockOSThreadCallback
func lockOSThreadCallback() {
runtime.LockOSThread()
runtime.UnlockOSThread()
go C.usleep(10000)
runtime.Gosched()
}