Added cleanup to test

CMakeLists.txt

@@ -13,7 +13,7 @@ option(MI_INTERPOSE         "Use interpose to override standard malloc on macOS"
 option(MI_OSX_ZONE          "Use malloc zone to override standard malloc on macOS" OFF) # enables interpose as well
 option(MI_LOCAL_DYNAMIC_TLS "Use slightly slower, dlopen-compatible TLS mechanism (Unix)" OFF)
 option(MI_BUILD_TESTS       "Build test executables" ON)
-option(MI_USER_CLEANUP      "Enable user defined functionality for custom memory clean function" OFF)
+option(MI_USER_CLEANUP      "Enable user defined functionality for custom memory clean function" ON)
 option(MI_CHECK_FULL        "Use full internal invariant checking in DEBUG mode (deprecated, use MI_DEBUG_FULL instead)" OFF)
 option(MI_PADDING           "Enable padding to detect heap block overflow (only in debug mode)" ON)
 

test/test-stress.c

@@ -63,6 +63,11 @@ static void* atomic_exchange_ptr(volatile void** p, void* newval);
 
 typedef uintptr_t* random_t;
 
+void memory_cleanup(void* user_data, void* ptr, size_t size) {
+     (void)user_data;
+     memset(ptr, 0, size);
+}
+
 static uintptr_t pick(random_t r) {
   uintptr_t x = *r;
 #if (UINTPTR_MAX > UINT32_MAX)
@@ -218,6 +223,7 @@ static void test_leak(void) {
 #endif
 
 int main(int argc, char** argv) {
+  mi_register_user_cleanup(memory_cleanup, NULL);
   // > mimalloc-test-stress [THREADS] [SCALE] [ITER]
   if (argc >= 2) {
     char* end;