1 files changed, 26 insertions, 0 deletions
diff --git a/test/asan/TestCases/max_redzone.cc b/test/asan/TestCases/max_redzone.cc
new file mode 100644
index 0000000000000..01c25a9f3efc8
--- /dev/null
+++ b/test/asan/TestCases/max_redzone.cc
@@ -0,0 +1,26 @@
+// Test max_redzone runtime option.
+
+// RUN: %clangxx_asan -O0 %s -o %t && env ASAN_OPTIONS=max_redzone=16 %run %t 0 2>&1
+// RUN: %clangxx_asan -O0 %s -o %t && %run %t 1 2>&1
+// RUN: %clangxx_asan -O3 %s -o %t && env ASAN_OPTIONS=max_redzone=16 %run %t 0 2>&1
+// RUN: %clangxx_asan -O3 %s -o %t && %run %t 1 2>&1
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sanitizer/allocator_interface.h>
+
+int main(int argc, char **argv) {
+  if (argc < 2)
+    return 1;
+  bool large_redzone = atoi(argv[1]);
+  size_t before = __sanitizer_get_heap_size();
+  void *pp[10000];
+  for (int i = 0; i < 10000; ++i)
+    pp[i] = malloc(4096 - 64);
+  size_t after = __sanitizer_get_heap_size();
+  for (int i = 0; i < 10000; ++i)
+    free(pp[i]);
+  size_t diff = after - before;
+  return !(large_redzone ? diff > 46000000 : diff < 46000000);
+}