vendor/compiler-rt/compiler-rt-r197381

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/asan/lit_tests/TestCases/malloc_hook.cc b/lib/asan/lit_tests/TestCases/malloc_hook.cc
new file mode 100644
index 000000000000..83be1020ea43
--- /dev/null
+++ b/lib/asan/lit_tests/TestCases/malloc_hook.cc
@@ -0,0 +1,36 @@
+// RUN: %clangxx_asan -O2 %s -o %t
+// RUN: %t 2>&1 | FileCheck %s
+#include <stdlib.h>
+#include <unistd.h>
+
+extern "C" {
+bool __asan_get_ownership(const void *p);
+
+void *global_ptr;
+
+// Note: avoid calling functions that allocate memory in malloc/free
+// to avoid infinite recursion.
+void __asan_malloc_hook(void *ptr, size_t sz) {
+  if (__asan_get_ownership(ptr)) {
+    write(1, "MallocHook\n", sizeof("MallocHook\n"));
+    global_ptr = ptr;
+  }
+}
+void __asan_free_hook(void *ptr) {
+  if (__asan_get_ownership(ptr) && ptr == global_ptr)
+    write(1, "FreeHook\n", sizeof("FreeHook\n"));
+}
+}  // extern "C"
+
+int main() {
+  volatile int *x = new int;
+  // CHECK: MallocHook
+  // Check that malloc hook was called with correct argument.
+  if (global_ptr != (void*)x) {
+    _exit(1);
+  }
+  *x = 0;
+  delete x;
+  // CHECK: FreeHook
+  return 0;
+}