1 files changed, 63 insertions, 0 deletions
diff --git a/misc/cgo/testsanitizers/testdata/tsan_shared.go b/misc/cgo/testsanitizers/testdata/tsan_shared.go
new file mode 100644
index 0000000..55ff67e
--- /dev/null
+++ b/misc/cgo/testsanitizers/testdata/tsan_shared.go
@@ -0,0 +1,63 @@
+// Copyright 2017 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.
+
+package main
+
+// This program failed with SIGSEGV when run under the C/C++ ThreadSanitizer.
+// The Go runtime had re-registered the C handler with the wrong flags due to a
+// typo, resulting in null pointers being passed for the info and context
+// parameters to the handler.
+
+/*
+#cgo CFLAGS: -fsanitize=thread
+#cgo LDFLAGS: -fsanitize=thread
+
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ucontext.h>
+
+void check_params(int signo, siginfo_t *info, void *context) {
+	ucontext_t* uc = (ucontext_t*)(context);
+
+	if (info->si_signo != signo) {
+		fprintf(stderr, "info->si_signo does not match signo.\n");
+		abort();
+	}
+
+	if (uc->uc_stack.ss_size == 0) {
+		fprintf(stderr, "uc_stack has size 0.\n");
+		abort();
+	}
+}
+
+
+// Set up the signal handler in a high priority constructor, so
+// that it is installed before the Go code starts.
+
+static void register_handler(void) __attribute__ ((constructor (200)));
+
+static void register_handler() {
+	struct sigaction sa;
+	memset(&sa, 0, sizeof(sa));
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = SA_SIGINFO;
+	sa.sa_sigaction = check_params;
+
+	if (sigaction(SIGUSR1, &sa, NULL) != 0) {
+		perror("failed to register SIGUSR1 handler");
+		exit(EXIT_FAILURE);
+	}
+}
+*/
+import "C"
+
+import "syscall"
+
+func init() {
+	C.raise(C.int(syscall.SIGUSR1))
+}
+
+func main() {}