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a16f81f5e3
This reverts commit cb528ec5e6331ce207c7b835d7ab963bd5e13af7. Reason: buildbot breakage (https://lab.llvm.org/buildbot/#/builders/5/builds/40364): SUMMARY: AddressSanitizer: container-overflow /b/sanitizer-x86_64-linux-fast/build/libcxx_build_asan_ubsan/include/c++/v1/string:1870:29 in __get_long_pointer
97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef ASAN_TESTING_H
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#define ASAN_TESTING_H
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#include "test_macros.h"
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#include <vector>
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#include <string>
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#include <memory>
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#include <type_traits>
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#if TEST_HAS_FEATURE(address_sanitizer)
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extern "C" int __sanitizer_verify_contiguous_container(const void* beg, const void* mid, const void* end);
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template <typename T, typename Alloc>
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TEST_CONSTEXPR bool is_contiguous_container_asan_correct(const std::vector<T, Alloc>& c) {
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if (TEST_IS_CONSTANT_EVALUATED)
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return true;
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if (std::is_same<Alloc, std::allocator<T> >::value && c.data() != NULL)
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return __sanitizer_verify_contiguous_container(c.data(), c.data() + c.size(), c.data() + c.capacity()) != 0;
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return true;
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}
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#else
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template <typename T, typename Alloc>
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TEST_CONSTEXPR bool is_contiguous_container_asan_correct(const std::vector<T, Alloc>&) {
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return true;
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}
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#endif // TEST_HAS_FEATURE(address_sanitizer)
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#if TEST_HAS_FEATURE(address_sanitizer)
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extern "C" int __sanitizer_verify_double_ended_contiguous_container(
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const void* beg, const void* con_beg, const void* con_end, const void* end);
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extern "C" bool __sanitizer_is_annotable(const void* address, const unsigned long size);
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#include <deque>
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template <class T, class Alloc>
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TEST_CONSTEXPR bool is_double_ended_contiguous_container_asan_correct(const std::deque<T, Alloc>& c) {
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if (TEST_IS_CONSTANT_EVALUATED)
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return true;
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if (std::is_same<Alloc, std::allocator<T> >::value)
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return c.__verify_asan_annotations();
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return true;
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}
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#else
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# include <deque>
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template <class T, class Alloc>
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TEST_CONSTEXPR bool is_double_ended_contiguous_container_asan_correct(const std::deque<T, Alloc>&) {
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return true;
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}
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#endif
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#if TEST_HAS_FEATURE(address_sanitizer)
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template <typename S>
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bool is_string_short(S const& s) {
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// We do not have access to __is_long(), but we can check if strings
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// buffer is inside strings memory. If strings memory contains its content,
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// SSO is in use. To check it, we can just confirm that the beginning is in
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// the string object memory block.
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// &s - beginning of objects memory
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// &s[0] - beginning of the buffer
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// (&s+1) - end of objects memory
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return (void*)std::addressof(s) <= (void*)std::addressof(s[0]) &&
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(void*)std::addressof(s[0]) < (void*)(std::addressof(s) + 1);
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}
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template <typename ChrT, typename TraitsT, typename Alloc>
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TEST_CONSTEXPR bool is_string_asan_correct(const std::basic_string<ChrT, TraitsT, Alloc>& c) {
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if (TEST_IS_CONSTANT_EVALUATED)
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return true;
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if (!is_string_short(c) || _LIBCPP_SHORT_STRING_ANNOTATIONS_ALLOWED) {
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if (std::__asan_annotate_container_with_allocator<Alloc>::value)
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return __sanitizer_verify_contiguous_container(c.data(), c.data() + c.size() + 1, c.data() + c.capacity() + 1) !=
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0;
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else
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return __sanitizer_verify_contiguous_container(
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c.data(), c.data() + c.capacity() + 1, c.data() + c.capacity() + 1) != 0;
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} else {
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return __sanitizer_verify_contiguous_container(std::addressof(c), std::addressof(c) + 1, std::addressof(c) + 1) !=
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0;
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}
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}
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#else
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# include <string>
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template <typename ChrT, typename TraitsT, typename Alloc>
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TEST_CONSTEXPR bool is_string_asan_correct(const std::basic_string<ChrT, TraitsT, Alloc>&) {
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return true;
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}
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#endif // TEST_HAS_FEATURE(address_sanitizer)
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#endif // ASAN_TESTING_H
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