intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 22 insertions, 0 deletions

diff --git a/library/cpp/messagebus/use_after_free_checker.cpp b/library/cpp/messagebus/use_after_free_checker.cpp
new file mode 100644
index 00000000000..4904e7c614a
--- /dev/null
+++ b/library/cpp/messagebus/use_after_free_checker.cpp
@@ -0,0 +1,22 @@
+#include "use_after_free_checker.h"
+
+#include <util/system/yassert.h>
+
+namespace {
+    const ui64 VALID = (ui64)0xAABBCCDDEEFF0011LL;
+    const ui64 INVALID = (ui64)0x1122334455667788LL;
+}
+
+TUseAfterFreeChecker::TUseAfterFreeChecker()
+    : Magic(VALID)
+{
+}
+
+TUseAfterFreeChecker::~TUseAfterFreeChecker() {
+    Y_VERIFY(Magic == VALID, "Corrupted");
+    Magic = INVALID;
+}
+
+void TUseAfterFreeChecker::CheckNotFreed() const {
+    Y_VERIFY(Magic == VALID, "Freed or corrupted");
+}