1 files changed, 106 insertions, 0 deletions
diff --git a/gcc-4.9/libsanitizer/asan/asan_new_delete.cc b/gcc-4.9/libsanitizer/asan/asan_new_delete.cc
new file mode 100644
index 000000000..beac8cdbd
--- /dev/null
+++ b/gcc-4.9/libsanitizer/asan/asan_new_delete.cc
@@ -0,0 +1,106 @@
+//===-- asan_interceptors.cc ----------------------------------------------===//
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of AddressSanitizer, an address sanity checker.
+//
+// Interceptors for operators new and delete.
+//===----------------------------------------------------------------------===//
+
+#include "asan_allocator.h"
+#include "asan_internal.h"
+#include "asan_stack.h"
+
+#include <stddef.h>
+
+namespace __asan {
+// This function is a no-op. We need it to make sure that object file
+// with our replacements will actually be loaded from static ASan
+// run-time library at link-time.
+void ReplaceOperatorsNewAndDelete() { }
+}
+
+using namespace __asan;  // NOLINT
+
+// On Android new() goes through malloc interceptors.
+// See also https://code.google.com/p/address-sanitizer/issues/detail?id=131.
+#if !SANITIZER_ANDROID
+
+// Fake std::nothrow_t to avoid including <new>.
+namespace std {
+struct nothrow_t {};
+}  // namespace std
+
+#define OPERATOR_NEW_BODY(type) \
+  GET_STACK_TRACE_MALLOC;\
+  return asan_memalign(0, size, &stack, type);
+
+// On OS X it's not enough to just provide our own 'operator new' and
+// 'operator delete' implementations, because they're going to be in the
+// runtime dylib, and the main executable will depend on both the runtime
+// dylib and libstdc++, each of those'll have its implementation of new and
+// delete.
+// To make sure that C++ allocation/deallocation operators are overridden on
+// OS X we need to intercept them using their mangled names.
+#if !SANITIZER_MAC
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size) { OPERATOR_NEW_BODY(FROM_NEW); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size) { OPERATOR_NEW_BODY(FROM_NEW_BR); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(FROM_NEW); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::nothrow_t const&)
+{ OPERATOR_NEW_BODY(FROM_NEW_BR); }
+
+#else  // SANITIZER_MAC
+INTERCEPTOR(void *, _Znwm, size_t size) {
+  OPERATOR_NEW_BODY(FROM_NEW);
+}
+INTERCEPTOR(void *, _Znam, size_t size) {
+  OPERATOR_NEW_BODY(FROM_NEW_BR);
+}
+INTERCEPTOR(void *, _ZnwmRKSt9nothrow_t, size_t size, std::nothrow_t const&) {
+  OPERATOR_NEW_BODY(FROM_NEW);
+}
+INTERCEPTOR(void *, _ZnamRKSt9nothrow_t, size_t size, std::nothrow_t const&) {
+  OPERATOR_NEW_BODY(FROM_NEW_BR);
+}
+#endif
+
+#define OPERATOR_DELETE_BODY(type) \
+  GET_STACK_TRACE_FREE;\
+  asan_free(ptr, &stack, type);
+
+#if !SANITIZER_MAC
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr) { OPERATOR_DELETE_BODY(FROM_NEW); }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr) { OPERATOR_DELETE_BODY(FROM_NEW_BR); }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY(FROM_NEW); }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::nothrow_t const&)
+{ OPERATOR_DELETE_BODY(FROM_NEW_BR); }
+
+#else  // SANITIZER_MAC
+INTERCEPTOR(void, _ZdlPv, void *ptr) {
+  OPERATOR_DELETE_BODY(FROM_NEW);
+}
+INTERCEPTOR(void, _ZdaPv, void *ptr) {
+  OPERATOR_DELETE_BODY(FROM_NEW_BR);
+}
+INTERCEPTOR(void, _ZdlPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&) {
+  OPERATOR_DELETE_BODY(FROM_NEW);
+}
+INTERCEPTOR(void, _ZdaPvRKSt9nothrow_t, void *ptr, std::nothrow_t const&) {
+  OPERATOR_DELETE_BODY(FROM_NEW_BR);
+}
+#endif
+
+#endif