[libcxx-commits] [libcxx] [libc++][NFC] Move basic ASan annotation functions into a utility header (PR #87220)

[Louis Dionne via libcxx-commits]

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@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___LIBCXX_DEBUG_UTILS_SANITIZERS_H
+#define _LIBCPP___LIBCXX_DEBUG_UTILS_SANITIZERS_H
+
+#include <__config>
+#include <__type_traits/integral_constant.h>
+#include <__type_traits/is_constant_evaluated.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+#ifndef _LIBCPP_HAS_NO_ASAN
+
+extern "C" {
+_LIBCPP_EXPORTED_FROM_ABI void
+__sanitizer_annotate_contiguous_container(const void*, const void*, const void*, const void*);
+_LIBCPP_EXPORTED_FROM_ABI void __sanitizer_annotate_double_ended_contiguous_container(
+    const void*, const void*, const void*, const void*, const void*, const void*);
+_LIBCPP_EXPORTED_FROM_ABI int
+__sanitizer_verify_double_ended_contiguous_container(const void*, const void*, const void*, const void*);
+}
+
+#endif // _LIBCPP_HAS_NO_ASAN
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+// ASan choices
+#ifndef _LIBCPP_HAS_NO_ASAN
+#  define _LIBCPP_HAS_ASAN_CONTAINER_ANNOTATIONS_FOR_ALL_ALLOCATORS 1
+#endif
+
+#ifdef _LIBCPP_HAS_ASAN_CONTAINER_ANNOTATIONS_FOR_ALL_ALLOCATORS
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ldionne wrote:

Can you please include documentation for what `__asan_annotate_container_with_allocator` is?

https://github.com/llvm/llvm-project/pull/87220