1 files changed, 25 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/signal_malloc.cc b/lib/tsan/lit_tests/signal_malloc.cc
new file mode 100644
index 0000000000000..cee997cdb7635
--- /dev/null
+++ b/lib/tsan/lit_tests/signal_malloc.cc
@@ -0,0 +1,25 @@
+// 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*) {
+  // CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal
+  // CHECK:     #0 malloc
+  // CHECK:     #1 handler(int, siginfo*, void*) {{.*}}signal_malloc.cc:[[@LINE+1]]
+  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;
+}
+