1 files changed, 124 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/dfsan/dfsan_new_delete.cpp b/contrib/llvm-project/compiler-rt/lib/dfsan/dfsan_new_delete.cpp
new file mode 100644
index 000000000000..7ac906e81077
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/dfsan/dfsan_new_delete.cpp
@@ -0,0 +1,124 @@
+//===-- dfsan_new_delete.cpp ----------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file is a part of DataflowSanitizer.
+//
+// Interceptors for operators new and delete.
+//===----------------------------------------------------------------------===//
+
+#include <stddef.h>
+
+#include "dfsan.h"
+#include "interception/interception.h"
+#include "sanitizer_common/sanitizer_allocator.h"
+#include "sanitizer_common/sanitizer_allocator_report.h"
+
+using namespace __dfsan;
+
+// Fake std::nothrow_t and std::align_val_t to avoid including <new>.
+namespace std {
+struct nothrow_t {};
+enum class align_val_t : size_t {};
+}  // namespace std
+
+// TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
+#define OPERATOR_NEW_BODY(nothrow)   \
+  void *res = dfsan_malloc(size);    \
+  if (!nothrow && UNLIKELY(!res)) {  \
+    BufferedStackTrace stack;        \
+    ReportOutOfMemory(size, &stack); \
+  }                                  \
+  return res
+#define OPERATOR_NEW_BODY_ALIGN(nothrow)         \
+  void *res = dfsan_memalign((uptr)align, size); \
+  if (!nothrow && UNLIKELY(!res)) {              \
+    BufferedStackTrace stack;                    \
+    ReportOutOfMemory(size, &stack);             \
+  }                                              \
+  return res;
+
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); }
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::nothrow_t const &) {
+  OPERATOR_NEW_BODY(true /*nothrow*/);
+}
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::nothrow_t const &) {
+  OPERATOR_NEW_BODY(true /*nothrow*/);
+}
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align) {
+  OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/);
+}
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align) {
+  OPERATOR_NEW_BODY_ALIGN(false /*nothrow*/);
+}
+INTERCEPTOR_ATTRIBUTE
+void *operator new(size_t size, std::align_val_t align,
+                   std::nothrow_t const &) {
+  OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/);
+}
+INTERCEPTOR_ATTRIBUTE
+void *operator new[](size_t size, std::align_val_t align,
+                     std::nothrow_t const &) {
+  OPERATOR_NEW_BODY_ALIGN(true /*nothrow*/);
+}
+
+#define OPERATOR_DELETE_BODY \
+  if (ptr)                   \
+  dfsan_deallocate(ptr)
+
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr)NOEXCEPT { OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::nothrow_t const &) {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::nothrow_t const &) {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size)NOEXCEPT { OPERATOR_DELETE_BODY; }
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size) NOEXCEPT {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t align)NOEXCEPT {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t align) NOEXCEPT {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, std::align_val_t align,
+                     std::nothrow_t const &) {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, std::align_val_t align,
+                       std::nothrow_t const &) {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete(void *ptr, size_t size, std::align_val_t align)NOEXCEPT {
+  OPERATOR_DELETE_BODY;
+}
+INTERCEPTOR_ATTRIBUTE
+void operator delete[](void *ptr, size_t size,
+                       std::align_val_t align) NOEXCEPT {
+  OPERATOR_DELETE_BODY;
+}