head 1.1; branch 1.1.1; access; symbols perseant-exfatfs-base-20261102:1.1.1.2 netbsd-11-1-RELEASE:1.1.1.1 gcc-14-4-0:1.1.1.2 netbsd-11-0-RELEASE:1.1.1.1 netbsd-11-0-RC7:1.1.1.1 netbsd-11-0-RC6:1.1.1.1 netbsd-11-0-RC5:1.1.1.1 netbsd-11-0-RC4:1.1.1.1 netbsd-11-0-RC3:1.1.1.1 netbsd-11-0-RC2:1.1.1.1 netbsd-11-0-RC1:1.1.1.1 gcc-14-3-0:1.1.1.2 perseant-exfatfs-base-20250801:1.1.1.1 netbsd-11:1.1.1.1.0.4 netbsd-11-base:1.1.1.1 gcc-12-5-0:1.1.1.1 perseant-exfatfs-base-20240630:1.1.1.1 gcc-12-4-0:1.1.1.1 perseant-exfatfs:1.1.1.1.0.2 perseant-exfatfs-base:1.1.1.1 gcc-12-3-0:1.1.1.1 FSF:1.1.1; locks; strict; comment @// @; 1.1 date 2023.07.30.05.20.41; author mrg; state Exp; branches 1.1.1.1; next ; commitid tk6nV4mbc9nVEMyE; 1.1.1.1 date 2023.07.30.05.20.41; author mrg; state Exp; branches 1.1.1.1.2.1; next 1.1.1.2; commitid tk6nV4mbc9nVEMyE; 1.1.1.2 date 2025.09.13.23.45.04; author mrg; state Exp; branches; next ; commitid KwhwN4krNWa6XBaG; 1.1.1.1.2.1 date 2026.11.04.22.51.18; author perseant; state Exp; branches; next ; commitid 3QTNojfCEH9lUb2H; desc @@ 1.1 log @Initial revision @ text @//===-- hwasan_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 HWAddressSanitizer. // // Interceptors for operators new and delete. //===----------------------------------------------------------------------===// #include "hwasan.h" #include "interception/interception.h" #include "sanitizer_common/sanitizer_allocator.h" #include "sanitizer_common/sanitizer_allocator_report.h" #include #include #if HWASAN_REPLACE_OPERATORS_NEW_AND_DELETE // TODO(alekseys): throw std::bad_alloc instead of dying on OOM. #define OPERATOR_NEW_BODY(nothrow) \ GET_MALLOC_STACK_TRACE; \ void *res = hwasan_malloc(size, &stack);\ if (!nothrow && UNLIKELY(!res)) ReportOutOfMemory(size, &stack);\ return res #define OPERATOR_NEW_ALIGN_BODY(nothrow) \ GET_MALLOC_STACK_TRACE; \ void *res = hwasan_aligned_alloc(static_cast(align), size, &stack); \ if (!nothrow && UNLIKELY(!res)) \ ReportOutOfMemory(size, &stack); \ return res #define OPERATOR_DELETE_BODY \ GET_MALLOC_STACK_TRACE; \ if (ptr) hwasan_free(ptr, &stack) #elif defined(__ANDROID__) // We don't actually want to intercept operator new and delete on Android, but // since we previously released a runtime that intercepted these functions, // removing the interceptors would break ABI. Therefore we simply forward to // malloc and free. #define OPERATOR_NEW_BODY(nothrow) return malloc(size) #define OPERATOR_DELETE_BODY free(ptr) #endif #ifdef OPERATOR_NEW_BODY using namespace __hwasan; // Fake std::nothrow_t to avoid including . namespace std { struct nothrow_t {}; } // namespace std INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[](size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY(true /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[](size_t size, std::nothrow_t const&) { OPERATOR_NEW_BODY(true /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete(void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, std::nothrow_t const &) { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, std::nothrow_t const &) { OPERATOR_DELETE_BODY; } #endif // OPERATOR_NEW_BODY #ifdef OPERATOR_NEW_ALIGN_BODY namespace std { enum class align_val_t : size_t {}; } // namespace std INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new( size_t size, std::align_val_t align) { OPERATOR_NEW_ALIGN_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[]( size_t size, std::align_val_t align) { OPERATOR_NEW_ALIGN_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new( size_t size, std::align_val_t align, std::nothrow_t const &) { OPERATOR_NEW_ALIGN_BODY(true /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[]( size_t size, std::align_val_t align, std::nothrow_t const &) { OPERATOR_NEW_ALIGN_BODY(true /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, std::align_val_t align) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, std::align_val_t) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, std::align_val_t, std::nothrow_t const &) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, std::align_val_t, std::nothrow_t const &) NOEXCEPT { OPERATOR_DELETE_BODY; } #endif // OPERATOR_NEW_ALIGN_BODY @ 1.1.1.1 log @initial import of GCC 12.3.0. major changes in GCC 11 included: - The default mode for C++ is now -std=gnu++17 instead of -std=gnu++14. - When building GCC itself, the host compiler must now support C++11, rather than C++98. - Some short options of the gcov tool have been renamed: -i to -j and -j to -H. - ThreadSanitizer improvements. - Introduce Hardware-assisted AddressSanitizer support. - For targets that produce DWARF debugging information GCC now defaults to DWARF version 5. This can produce up to 25% more compact debug information compared to earlier versions. - Many optimisations. - The existing malloc attribute has been extended so that it can be used to identify allocator/deallocator API pairs. A pair of new -Wmismatched-dealloc and -Wmismatched-new-delete warnings are added. - Other new warnings: -Wsizeof-array-div, enabled by -Wall, warns about divisions of two sizeof operators when the first one is applied to an array and the divisor does not equal the size of the array element. -Wstringop-overread, enabled by default, warns about calls to string functions reading past the end of the arrays passed to them as arguments. -Wtsan, enabled by default, warns about unsupported features in ThreadSanitizer (currently std::atomic_thread_fence). - Enchanced warnings: -Wfree-nonheap-object detects many more instances of calls to deallocation functions with pointers not returned from a dynamic memory allocation function. -Wmaybe-uninitialized diagnoses passing pointers or references to uninitialized memory to functions taking const-qualified arguments. -Wuninitialized detects reads from uninitialized dynamically allocated memory. -Warray-parameter warns about functions with inconsistent array forms. -Wvla-parameter warns about functions with inconsistent VLA forms. - Several new features from the upcoming C2X revision of the ISO C standard are supported with -std=c2x and -std=gnu2x. - Several C++20 features have been implemented. - The C++ front end has experimental support for some of the upcoming C++23 draft. - Several new C++ warnings. - Enhanced Arm, AArch64, x86, and RISC-V CPU support. - The implementation of how program state is tracked within -fanalyzer has been completely rewritten with many enhancements. see https://gcc.gnu.org/gcc-11/changes.html for a full list. major changes in GCC 12 include: - An ABI incompatibility between C and C++ when passing or returning by value certain aggregates containing zero width bit-fields has been discovered on various targets. x86-64, ARM and AArch64 will always ignore them (so there is a C ABI incompatibility between GCC 11 and earlier with GCC 12 or later), PowerPC64 ELFv2 always take them into account (so there is a C++ ABI incompatibility, GCC 4.4 and earlier compatible with GCC 12 or later, incompatible with GCC 4.5 through GCC 11). RISC-V has changed the handling of these already starting with GCC 10. As the ABI requires, MIPS takes them into account handling function return values so there is a C++ ABI incompatibility with GCC 4.5 through 11. - STABS: Support for emitting the STABS debugging format is deprecated and will be removed in the next release. All ports now default to emit DWARF (version 2 or later) debugging info or are obsoleted. - Vectorization is enabled at -O2 which is now equivalent to the original -O2 -ftree-vectorize -fvect-cost-model=very-cheap. - GCC now supports the ShadowCallStack sanitizer. - Support for __builtin_shufflevector compatible with the clang language extension was added. - Support for attribute unavailable was added. - Support for __builtin_dynamic_object_size compatible with the clang language extension was added. - New warnings: -Wbidi-chars warns about potentially misleading UTF-8 bidirectional control characters. -Warray-compare warns about comparisons between two operands of array type. - Some new features from the upcoming C2X revision of the ISO C standard are supported with -std=c2x and -std=gnu2x. - Several C++23 features have been implemented. - Many C++ enhancements across warnings and -f options. see https://gcc.gnu.org/gcc-12/changes.html for a full list. @ text @@ 1.1.1.1.2.1 log @Sync with HEAD @ text @d25 15 a39 17 # define OPERATOR_NEW_BODY(nothrow) \ GET_MALLOC_STACK_TRACE; \ void *res = hwasan_malloc(size, &stack); \ if (!nothrow && UNLIKELY(!res)) \ ReportOutOfMemory(size, &stack); \ return res # define OPERATOR_NEW_ALIGN_BODY(nothrow) \ GET_MALLOC_STACK_TRACE; \ void *res = hwasan_memalign(static_cast(align), size, &stack); \ if (!nothrow && UNLIKELY(!res)) \ ReportOutOfMemory(size, &stack); \ return res # define OPERATOR_DELETE_BODY \ GET_MALLOC_STACK_TRACE; \ if (ptr) \ hwasan_free(ptr, &stack) d47 2 a48 2 # define OPERATOR_NEW_BODY(nothrow) return malloc(size) # define OPERATOR_DELETE_BODY free(ptr) d58 1 a58 1 struct nothrow_t {}; d61 8 a68 9 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[]( size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new( size_t size, std::nothrow_t const &) { d71 2 a72 2 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[]( size_t size, std::nothrow_t const &) { d76 2 a77 2 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr) NOEXCEPT { a91 8 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, size_t) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, size_t) NOEXCEPT { OPERATOR_DELETE_BODY; } a133 16 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, size_t, std::align_val_t) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, size_t, std::align_val_t) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, size_t, std::align_val_t, std::nothrow_t const &) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, size_t, std::align_val_t, std::nothrow_t const &) NOEXCEPT { OPERATOR_DELETE_BODY; } @ 1.1.1.2 log @initial import of GCC 14.3.0. major changes in GCC 13: - improved sanitizer - zstd debug info compression - LTO improvements - SARIF based diagnostic support - new warnings: -Wxor-used-as-pow, -Wenum-int-mismatch, -Wself-move, -Wdangling-reference - many new -Wanalyzer* specific warnings - enhanced warnings: -Wpessimizing-move, -Wredundant-move - new attributes to mark file descriptors, c++23 "assume" - several C23 features added - several C++23 features added - many new features for Arm, x86, RISC-V major changes in GCC 14: - more strict C99 or newer support - ia64* marked deprecated (but seemingly still in GCC 15.) - several new hardening features - support for "hardbool", which can have user supplied values of true/false - explicit support for stack scrubbing upon function exit - better auto-vectorisation support - added clang-compatible __has_feature and __has_extension - more C23, including -std=c23 - several C++26 features added - better diagnostics in C++ templates - new warnings: -Wnrvo, Welaborated-enum-base - many new features for Arm, x86, RISC-V - possible ABI breaking change for SPARC64 and small structures with arrays of floats. @ text @d25 15 a39 17 # define OPERATOR_NEW_BODY(nothrow) \ GET_MALLOC_STACK_TRACE; \ void *res = hwasan_malloc(size, &stack); \ if (!nothrow && UNLIKELY(!res)) \ ReportOutOfMemory(size, &stack); \ return res # define OPERATOR_NEW_ALIGN_BODY(nothrow) \ GET_MALLOC_STACK_TRACE; \ void *res = hwasan_memalign(static_cast(align), size, &stack); \ if (!nothrow && UNLIKELY(!res)) \ ReportOutOfMemory(size, &stack); \ return res # define OPERATOR_DELETE_BODY \ GET_MALLOC_STACK_TRACE; \ if (ptr) \ hwasan_free(ptr, &stack) d47 2 a48 2 # define OPERATOR_NEW_BODY(nothrow) return malloc(size) # define OPERATOR_DELETE_BODY free(ptr) d58 1 a58 1 struct nothrow_t {}; d61 8 a68 9 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new(size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[]( size_t size) { OPERATOR_NEW_BODY(false /*nothrow*/); } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new( size_t size, std::nothrow_t const &) { d71 2 a72 2 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void *operator new[]( size_t size, std::nothrow_t const &) { d76 2 a77 2 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr) NOEXCEPT { a91 8 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, size_t) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, size_t) NOEXCEPT { OPERATOR_DELETE_BODY; } a133 16 INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, size_t, std::align_val_t) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, size_t, std::align_val_t) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete( void *ptr, size_t, std::align_val_t, std::nothrow_t const &) NOEXCEPT { OPERATOR_DELETE_BODY; } INTERCEPTOR_ATTRIBUTE SANITIZER_WEAK_ATTRIBUTE void operator delete[]( void *ptr, size_t, std::align_val_t, std::nothrow_t const &) NOEXCEPT { OPERATOR_DELETE_BODY; } @