From be6005a0d5862e2a0d91373194927d40c1a2637e Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@google.com>
Date: Fri, 14 Dec 2012 13:56:27 +0000
Subject: [PATCH] tsan: add test for malloc/free in signal handler

llvm-svn: 170205
---
 compiler-rt/lib/tsan/lit_tests/signal_malloc.cc | 26 +++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 compiler-rt/lib/tsan/lit_tests/signal_malloc.cc

diff --git a/compiler-rt/lib/tsan/lit_tests/signal_malloc.cc b/compiler-rt/lib/tsan/lit_tests/signal_malloc.cc
new file mode 100644
index 0000000..86ae436
--- /dev/null
+++ b/compiler-rt/lib/tsan/lit_tests/signal_malloc.cc
@@ -0,0 +1,26 @@
+// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+static void handler(int, siginfo_t*, void*) {
+  volatile char *p = (char*)malloc(1);
+  p[0] = 0;
+  free((void*)p);
+}
+
+int main() {
+  struct sigaction act = {};
+  act.sa_sigaction = &handler;
+  sigaction(SIGPROF, &act, 0);
+  kill(getpid(), SIGPROF);
+  sleep(1);
+  return 0;
+}
+
+// CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal
+// CHECK:     #0 malloc
+// CHECK:     #1 handler(int, siginfo*, void*) {{.*}}signal_malloc.cc:9
+
-- 
2.7.4