1 files changed, 22 insertions, 0 deletions
diff --git a/lib/tsan/lit_tests/malloc_overflow.cc b/lib/tsan/lit_tests/malloc_overflow.cc
new file mode 100644
index 0000000000000..19423c5f93f14
--- /dev/null
+++ b/lib/tsan/lit_tests/malloc_overflow.cc
@@ -0,0 +1,22 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+  void *p = malloc((size_t)-1);
+  if (p != 0)
+    printf("FAIL malloc(-1) = %p\n", p);
+  p = malloc((size_t)-1 / 2);
+  if (p != 0)
+    printf("FAIL malloc(-1/2) = %p\n", p);
+  p = calloc((size_t)-1, (size_t)-1);
+  if (p != 0)
+    printf("FAIL calloc(-1, -1) = %p\n", p);
+  p = calloc((size_t)-1 / 2, (size_t)-1 / 2);
+  if (p != 0)
+    printf("FAIL calloc(-1/2, -1/2) = %p\n", p);
+  printf("OK\n");
+}
+
+// CHECK-NOT: FAIL
+// CHECK-NOT: failed to allocate