head 1.4; access; symbols perseant-exfatfs-base-20261102:1.4 netbsd-11-1-RELEASE:1.3 gcc-14-4-0:1.1.1.3 netbsd-11-0-RELEASE:1.3 netbsd-11-0-RC7:1.3 netbsd-11-0-RC6:1.3 netbsd-11-0-RC5:1.3 netbsd-11-0-RC4:1.3 netbsd-11-0-RC3:1.3 netbsd-11-0-RC2:1.3 netbsd-11-0-RC1:1.3 gcc-14-3-0:1.1.1.3 perseant-exfatfs-base-20250801:1.3 netbsd-11:1.3.0.4 netbsd-11-base:1.3 gcc-12-5-0:1.1.1.2 perseant-exfatfs-base-20240630:1.3 gcc-12-4-0:1.1.1.2 perseant-exfatfs:1.3.0.2 perseant-exfatfs-base:1.3 gcc-12-3-0:1.1.1.2 gcc-10-5-0:1.1.1.1 gcc-10-4-0:1.1.1.1 cjep_sun2x:1.2.0.4 cjep_sun2x-base:1.2 cjep_staticlib_x-base1:1.2 cjep_staticlib_x:1.2.0.2 cjep_staticlib_x-base:1.2 gcc-10-3-0:1.1.1.1 FSF:1.1.1; locks; strict; comment @// @; 1.4 date 2025.09.14.00.08.58; author mrg; state Exp; branches; next 1.3; commitid x9D5QEnvbeMI4CaG; 1.3 date 2023.07.31.01.44.57; author mrg; state Exp; branches 1.3.2.1; next 1.2; commitid q79F5Opf0FLsyTyE; 1.2 date 2021.04.11.23.54.27; author mrg; state dead; branches; next 1.1; commitid wJn7ggfUTEMOWVOC; 1.1 date 2021.04.10.22.09.21; author mrg; state Exp; branches 1.1.1.1; next ; commitid eC4g0MRpqTvEkNOC; 1.3.2.1 date 2026.11.04.22.51.25; author perseant; state Exp; branches; next ; commitid 3QTNojfCEH9lUb2H; 1.1.1.1 date 2021.04.10.22.09.21; author mrg; state Exp; branches; next 1.1.1.2; commitid eC4g0MRpqTvEkNOC; 1.1.1.2 date 2023.07.30.05.20.40; author mrg; state Exp; branches; next 1.1.1.3; commitid tk6nV4mbc9nVEMyE; 1.1.1.3 date 2025.09.13.23.45.04; author mrg; state Exp; branches; next ; commitid KwhwN4krNWa6XBaG; desc @@ 1.4 log @merge GCC 14.3.0. @ text @//===-- sanitizer_symbolizer_markup.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 shared between various sanitizers' runtime libraries. // // Implementation of offline markup symbolizer. //===----------------------------------------------------------------------===// #include "sanitizer_platform.h" #if SANITIZER_SYMBOLIZER_MARKUP #if SANITIZER_FUCHSIA #include "sanitizer_symbolizer_fuchsia.h" # endif # include # include # include "sanitizer_stacktrace.h" # include "sanitizer_stacktrace_printer.h" # include "sanitizer_symbolizer.h" namespace __sanitizer { // This generic support for offline symbolizing is based on the // Fuchsia port. We don't do any actual symbolization per se. // Instead, we emit text containing raw addresses and raw linkage // symbol names, embedded in Fuchsia's symbolization markup format. // Fuchsia's logging infrastructure emits enough information about // process memory layout that a post-processing filter can do the // symbolization and pretty-print the markup. See the spec at: // https://fuchsia.googlesource.com/zircon/+/master/docs/symbolizer_markup.md // This is used by UBSan for type names, and by ASan for global variable names. // It's expected to return a static buffer that will be reused on each call. const char *Symbolizer::Demangle(const char *name) { static char buffer[kFormatDemangleMax]; internal_snprintf(buffer, sizeof(buffer), kFormatDemangle, name); return buffer; } // This is used mostly for suppression matching. Making it work // would enable "interceptor_via_lib" suppressions. It's also used // once in UBSan to say "in module ..." in a message that also // includes an address in the module, so post-processing can already // pretty-print that so as to indicate the module. bool Symbolizer::GetModuleNameAndOffsetForPC(uptr pc, const char **module_name, uptr *module_address) { return false; } // This is mainly used by hwasan for online symbolization. This isn't needed // since hwasan can always just dump stack frames for offline symbolization. bool Symbolizer::SymbolizeFrame(uptr addr, FrameInfo *info) { return false; } // This is used in some places for suppression checking, which we // don't really support for Fuchsia. It's also used in UBSan to // identify a PC location to a function name, so we always fill in // the function member with a string containing markup around the PC // value. // TODO(mcgrathr): Under SANITIZER_GO, it's currently used by TSan // to render stack frames, but that should be changed to use // RenderStackFrame. SymbolizedStack *Symbolizer::SymbolizePC(uptr addr) { SymbolizedStack *s = SymbolizedStack::New(addr); char buffer[kFormatFunctionMax]; internal_snprintf(buffer, sizeof(buffer), kFormatFunction, addr); s->info.function = internal_strdup(buffer); return s; } // Always claim we succeeded, so that RenderDataInfo will be called. bool Symbolizer::SymbolizeData(uptr addr, DataInfo *info) { info->Clear(); info->start = addr; return true; } // We ignore the format argument to __sanitizer_symbolize_global. void FormattedStackTracePrinter::RenderData(InternalScopedString *buffer, const char *format, const DataInfo *DI, const char *strip_path_prefix) { buffer->AppendF(kFormatData, DI->start); } bool FormattedStackTracePrinter::RenderNeedsSymbolization(const char *format) { return false; } // We don't support the stack_trace_format flag at all. void FormattedStackTracePrinter::RenderFrame(InternalScopedString *buffer, const char *format, int frame_no, uptr address, const AddressInfo *info, bool vs_style, const char *strip_path_prefix) { CHECK(!RenderNeedsSymbolization(format)); buffer->AppendF(kFormatFrame, frame_no, address); } Symbolizer *Symbolizer::PlatformInit() { return new (symbolizer_allocator_) Symbolizer({}); } void Symbolizer::LateInitialize() { Symbolizer::GetOrInit(); } void StartReportDeadlySignal() {} void ReportDeadlySignal(const SignalContext &sig, u32 tid, UnwindSignalStackCallbackType unwind, const void *unwind_context) {} #if SANITIZER_CAN_SLOW_UNWIND struct UnwindTraceArg { BufferedStackTrace *stack; u32 max_depth; }; _Unwind_Reason_Code Unwind_Trace(struct _Unwind_Context *ctx, void *param) { UnwindTraceArg *arg = static_cast(param); CHECK_LT(arg->stack->size, arg->max_depth); uptr pc = _Unwind_GetIP(ctx); if (pc < PAGE_SIZE) return _URC_NORMAL_STOP; arg->stack->trace_buffer[arg->stack->size++] = pc; return (arg->stack->size == arg->max_depth ? _URC_NORMAL_STOP : _URC_NO_REASON); } void BufferedStackTrace::UnwindSlow(uptr pc, u32 max_depth) { CHECK_GE(max_depth, 2); size = 0; UnwindTraceArg arg = {this, Min(max_depth + 1, kStackTraceMax)}; _Unwind_Backtrace(Unwind_Trace, &arg); CHECK_GT(size, 0); // We need to pop a few frames so that pc is on top. uptr to_pop = LocatePcInTrace(pc); // trace_buffer[0] belongs to the current function so we always pop it, // unless there is only 1 frame in the stack trace (1 frame is always better // than 0!). PopStackFrames(Min(to_pop, static_cast(1))); trace_buffer[0] = pc; } void BufferedStackTrace::UnwindSlow(uptr pc, void *context, u32 max_depth) { CHECK(context); CHECK_GE(max_depth, 2); UNREACHABLE("signal context doesn't exist"); } #endif // SANITIZER_CAN_SLOW_UNWIND } // namespace __sanitizer #endif // SANITIZER_SYMBOLIZER_MARKUP @ 1.3 log @make this actually be GCC 12.3.0's libsanitizer. the libsanitizer we used with GCC 9 and GCC 10 was significantly ahead of the GCC 9 and GCC 10 provided versions. @ text @d25 1 d85 5 a89 3 void RenderData(InternalScopedString *buffer, const char *format, const DataInfo *DI, const char *strip_path_prefix) { buffer->append(kFormatData, DI->start); d92 3 a94 1 bool RenderNeedsSymbolization(const char *format) { return false; } d97 6 a102 3 void RenderFrame(InternalScopedString *buffer, const char *format, int frame_no, uptr address, const AddressInfo *info, bool vs_style, const char *strip_path_prefix, const char *strip_func_prefix) { d104 1 a104 1 buffer->append(kFormatFrame, frame_no, address); d111 1 a111 3 void Symbolizer::LateInitialize() { Symbolizer::GetOrInit()->LateInitializeTools(); } @ 1.3.2.1 log @Sync with HEAD @ text @a24 1 # include "sanitizer_stacktrace_printer.h" d84 3 a86 5 void FormattedStackTracePrinter::RenderData(InternalScopedString *buffer, const char *format, const DataInfo *DI, const char *strip_path_prefix) { buffer->AppendF(kFormatData, DI->start); d89 1 a89 3 bool FormattedStackTracePrinter::RenderNeedsSymbolization(const char *format) { return false; } d92 3 a94 6 void FormattedStackTracePrinter::RenderFrame(InternalScopedString *buffer, const char *format, int frame_no, uptr address, const AddressInfo *info, bool vs_style, const char *strip_path_prefix) { d96 1 a96 1 buffer->AppendF(kFormatFrame, frame_no, address); d103 3 a105 1 void Symbolizer::LateInitialize() { Symbolizer::GetOrInit(); } @ 1.2 log @revert sanitizer back to the version we were using with GCC 9, since that one was already newer than the GCC 10 version. @ text @d19 1 a19 5 #elif SANITIZER_RTEMS #include "sanitizer_symbolizer_rtems.h" #endif #include "sanitizer_stacktrace.h" #include "sanitizer_symbolizer.h" d21 5 a25 2 #include #include d56 4 d89 2 d93 1 a93 1 const AddressInfo &info, bool vs_style, d95 2 a96 1 buffer->append(kFormatFrame, frame_no, info.address); d103 3 a105 1 void Symbolizer::LateInitialize() { Symbolizer::GetOrInit(); } @ 1.1 log @Initial revision @ text @@ 1.1.1.1 log @initial import of GCC 10.3.0. main changes include: caveats: - ABI issue between c++14 and c++17 fixed - profile mode is removed from libstdc++ - -fno-common is now the default new features: - new flags -fallocation-dce, -fprofile-partial-training, -fprofile-reproducible, -fprofile-prefix-path, and -fanalyzer - many new compile and link time optimisations - enhanced drive optimisations - openacc 2.6 support - openmp 5.0 features - new warnings: -Wstring-compare and -Wzero-length-bounds - extended warnings: -Warray-bounds, -Wformat-overflow, -Wrestrict, -Wreturn-local-addr, -Wstringop-overflow, -Warith-conversion, -Wmismatched-tags, and -Wredundant-tags - some likely C2X features implemented - more C++20 implemented - many new arm & intel CPUs known hundreds of reported bugs are fixed. full list of changes can be found at: https://gcc.gnu.org/gcc-10/changes.html @ text @@ 1.1.1.2 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 @d19 5 a23 1 # endif d25 2 a26 5 # include # include # include "sanitizer_stacktrace.h" # include "sanitizer_symbolizer.h" a56 4 // This is mainly used by hwasan for online symbolization. This isn't needed // since hwasan can always just dump stack frames for offline symbolization. bool Symbolizer::SymbolizeFrame(uptr addr, FrameInfo *info) { return false; } a85 2 bool RenderNeedsSymbolization(const char *format) { return false; } d88 1 a88 1 uptr address, const AddressInfo *info, bool vs_style, d90 1 a90 2 CHECK(!RenderNeedsSymbolization(format)); buffer->append(kFormatFrame, frame_no, address); d97 1 a97 3 void Symbolizer::LateInitialize() { Symbolizer::GetOrInit()->LateInitializeTools(); } @ 1.1.1.3 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 @a24 1 # include "sanitizer_stacktrace_printer.h" d84 3 a86 5 void FormattedStackTracePrinter::RenderData(InternalScopedString *buffer, const char *format, const DataInfo *DI, const char *strip_path_prefix) { buffer->AppendF(kFormatData, DI->start); d89 1 a89 3 bool FormattedStackTracePrinter::RenderNeedsSymbolization(const char *format) { return false; } d92 3 a94 6 void FormattedStackTracePrinter::RenderFrame(InternalScopedString *buffer, const char *format, int frame_no, uptr address, const AddressInfo *info, bool vs_style, const char *strip_path_prefix) { d96 1 a96 1 buffer->AppendF(kFormatFrame, frame_no, address); d103 3 a105 1 void Symbolizer::LateInitialize() { Symbolizer::GetOrInit(); } @