2026-04-30  Release Manager 	* GCC 16.1.0 released. 2025-12-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE> 	* configure: Regenerate. 2025-11-06  Ian Lance Taylor  <iant@golang.org> 	* elf.c (ELFMAGn): In #undef rename from ELF_MAGn. 2025-11-03  Sam James  <sam@gentoo.org> 	* configure: Regenerate. 2025-10-02  H.J. Lu  <hjl.tools@gmail.com> 	* Makefile.in: Regenerated.	* aclocal.m4: Likewise.	* configure: Likewise. 2025-09-28  Ian Lance Taylor  <iant@golang.org> 	* filetype.awk: Recognize PE bigobj objects at configure time. 2025-04-10  John David Anglin  <danglin@gcc.gnu.org> 	* fileline.c (hpux_get_executable_path): New.	(fileline_initialize): Add pass to get hpux executable path. 2025-04-09  Richard Biener  <rguenther@suse.de> 	PR bootstrap/119680	* configure.ac (--enable-host-pie): Handle by setting PIC_FLAG	to -fPIE.	* configure: Regenerate. 2025-04-07  Jonathan Wakely  <jwakely@redhat.com> 	* atomic.c (backtrace_atomic_store_int): Use int for old value. 2025-02-10  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_uncompress_lzma_block): Add casts to avoid	potentially shifting a value farther than its type size. 2025-01-30  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_fetch_bits): Add casts to avoid potentially shifting	a value farther than its type size.	(elf_fetch_bits_backward): Likewise.	(elf_uncompress_lzma_block): Likewise.	(elf_uncompress_lzma): Likewise. 2025-01-28  Richard Earnshaw  <rearnsha@arm.com> 	* configure.ac: Always check if the compiler supports __sync	operations.	* configure: Regenerated. 2024-12-14  Ian Lance Taylor  <iant@golang.org> 	PR libbacktrace/117812	* zstdtest.c (test_large): Use 3 rather than ZSTD_CLEVEL_DEFAULT 2024-11-29  Ian Lance Taylor  <iant@golang.org> 	* fileline.c: Use WIN32_LEAN_AND_MEAN, not WIN32_MEAN_AND_LEAN.	* pecoff.c: Likewise. 2024-10-25  Ian Lance Taylor  <iant@golang.org> 	* macho.c (dwarf_section_names): Add __debug_addr and	__debug_line_str. 2024-10-18  Ian Lance Taylor  <iant@golang.org> 	* dwarf.c (resolve_unit_addrs_overlap_walk): New static function.	(resolve_unit_addrs_overlap): New static function.	(build_dwarf_data): Call resolve_unit_addrs_overlap. 2024-08-05  Ian Lance Taylor  <iant@golang.org> 	* configure.ac (ACX_PROG_CC_WARNING_OPTS): Add -Wpointer-arith.	* pecoff.c (coff_add): Cast void pointers.	* xcoff.c (xcoff_add): Likewise.	* configure: Regenerate. 2024-07-30  Ian Lance Taylor  <iant@golang.org> 	* pecoff.c (LDR_DLL_NOTIFICATION): Put function modifier	inside parentheses.	(LDR_REGISTER_FUNCTION): Likewise. 2024-07-18  Ian Lance Taylor  <iant@golang.org> 	* internal.h: Use __has_attribute to check for fallthrough	attribute.	* elf.c (elf_zstd_decompress): Use ATTRIBUTE_FALLTHROUGH rather	than a FALLTHROUGH comment. 2024-07-18  Ian Lance Taylor  <iant@golang.org> 	* print.c (print_syminfo_callback): Add cast to avoid warning. 2024-07-18  Ian Lance Taylor  <iant@golang.org> 	* print.c (print_syminfo_callback): New static function.	(print_callback): Call backtrace_syminfo if there is no function	or file name. 2024-07-18  Ian Lance Taylor  <iant@golang.org> 	* README: Add notes about dl_iterate_phdr. 2024-07-17  Ian Lance Taylor  <iant@golang.org> 	* xcoff.c (struct xcoff_fileline_data): Change base_address field	to struct libbacktrace_base_address.	(xcoff_initialize_syminfo): Change base_address to struct	libbacktrace_base_address.  Use libbacktrace_add_base.	(xcoff_initialize_fileline): Likewise.	(xcoff_lookup_pc): Use libbacktrace_add_base.	(xcoff_add): Change base_address to struct	libbacktrace_base_address.	(xcoff_armem_add, xcoff_add_shared_libs): Likewise.	(backtrace_initialize): Likewise.	* Makefile.am (xcoff.lo): Remove unused target.	(xcoff_32.lo, xcoff_64.lo): New targets.	* Makefile.in: Regenerate. 2024-07-16  Ian Lance Taylor  <iant@golang.org> 	* internal.h: If FDPIC, #include <link.h> and/or <sys/link.h>.	(libbacktrace_using_fdpic): Define.	(struct libbacktrace_base_address): Define.	(libbacktrace_add_base): Define.	(backtrace_dwarf_add): Change base_address to struct	libbacktrace_base_address.	* dwarf.c (struct dwarf_data): Change base_address to struct	libbacktrace_base_address.	(add_ranges, find_address_ranges, build_ddress_map): Likewise.	(build_dwarf_data, build_dwarf_add): Likewise.	(add_low_high_range): Change base_address to struct	libbacktrace_base_address.  Use libbacktrace_add_base.	(add_ranges_from_ranges, add_ranges_from_rnglists): Likewise.	(add_line): Use libbacktrace_add_base.	* elf.c (elf_initialize_syminfo): Change base_address to struct	libbacktrace_base_address.  Use libbacktrace_add_base.	(elf_add): Change base_address to struct	libbacktrace_base_address.	(phdr_callback): Likewise.  Initialize base_address.m.	(backtrace_initialize): If using FDPIC, don't call elf_add with	main executable; always use dl_iterate_phdr.	* macho.c (macho_add_symtab): Change base_address to struct	libbacktrace_base_address.  Use libbacktrace_add_base.	(macho_syminfo): Change base_address to struct	libbacktrace_base_address.	(macho_add_fat, macho_add_dsym, macho_add): Likewise.	(backtrace_initialize): Likewise.  Initialize base_address.m.	* pecoff.c (coff_initialize_syminfo): Change base_address to	struct libbacktrace_base_address.  Use libbacktrace_add_base.	(coff_add): Change base_address to struct	libbacktrace_base_address.  Initialize base_address.m. 2024-07-12  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_add): Don't use .gnu_debugdata if we are already	reading a debuginfo file.	* Makefile.am (m2test_*): New test targets.	(CHECK_PROGRAMS): Add m2test.	(MAKETESTS): Add m2test_minidebug2.	(%_minidebug2): New pattern.	(CLEANFILES): Remove minidebug2 files.	* Makefile.in: Regenerate. 2024-07-12  Ian Lance Taylor  <iant@golang.org> 	* btest.c (test5): Don't fail if symbol size is 0.	* mtest.c (test5): Likewise. 2024-07-12  Ian Lance Taylor  <iant@golang.org> 	* macho.c (MACH_O_N_EXT): Don't define.	(MACH_O_N_UNDF): Define.	(macho_defined_symbol): Don't discard N_EXT symbols.  Do	discard N_UNDF symbols. 2024-07-11  Ian Lance Taylor  <iant@golang.org> 	* btest.c (test1, test3): Add optnone attribute.	* edtest.c (test1): Likewise.	* mtest.c (test1, test3): Likewise.	* configure.ac: Use -Wno-attributes and -Wno-unknown-attributes.	* configure: Regenerate. 2024-07-11  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_nodebug): Suggest -g.	* macho.c (macho_nodebug): Suggest -g and dsymutil.	* pecoff.c (coff_nodebug): Suggest -g. 2024-07-11  Ian Lance Taylor  <iant@golang.org> 	* dwarf.c: Remove trailing whitespace.	* macho.c: Likewise. 2024-06-16  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_fetch_bits_backward) Don't fail if no bits are	available. 2024-05-03  Ian Lance Taylor  <iant@golang.org> 	* pecoff.c (struct dll_notification_data): Define.	(LDR_DLL_NOTIFICATION): New typedef.	(LDR_REGISTER_FUNCTION): New typedef.	(struct dll_notification_context): Define.	(dll_notification): New static function.	(backtrace_initialize): Register DLL notification. 2024-04-28  Ian Lance Taylor  <iant@golang.org> 	* configure.ac: Checked for tlhelp32.h	* pecoff.c: Include <tlhelp32.h> if available.	(backtrace_initialize): Use tlhelp32 api for a snapshot to	detect loaded modules.	(coff_add): New argument for the module handle of the file,	to get the base address.	* configure, config.h.in: Regenerate. 2024-04-23  Ian Lance Taylor  <iant@golang.org> 	* configure.ac: Test --compress-debug-sections=zlib-gnu and	--compress-debug-sections=zlib-gabi separately, setting new	automake conditionals.	* Makefile.am (ctestg, ctestg_alloc): Only build if	HAVE_COMPRESSED_DEBUG_ZLIB_GNU.	(ctesta, ctesta_alloc): Only build if	HAVE_COMPRESSED_DEBUG_ZLIB_GABI.	(ctestzstd_alloc): New test if HAVE_COMPRESSED_DEBUG_ZSTD.	* configure, Makefile.in: Regenerate. 2024-03-08  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_uncompress_chdr): Don't assume compressed section is	aligned. 2024-03-02  Ian Lance Taylor  <iant@golang.org> 	* Makefile.am (libbacktrace_testing_ldflags): Define.	(*_LDFLAGS): Add $(libbacktrace_testing_ldflags) for test	programs.	* Makefile.in: Regenerate 2024-03-02  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_uncompress_lzma_block): Skip all header padding bytes	and verify that they are zero. 2024-03-02  Ian Lance Taylor  <iant@golang.org> 	PR libbacktrace/114201	* elf.c (elf_add): Add caller_opd parameter.  Change all callers.	Release opd data after all recursive calls. 2024-03-01  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_add): Add the symbol table from a debuginfo file.	* Makefile.am (MAKETESTS): Add buildidfull and gnudebuglinkfull	variants of buildid and gnudebuglink tests.	(%_gnudebuglinkfull, %_buildidfull): New patterns.	* Makefile.in: Regenerate. 2023-11-30  Ian Lance Taylor  <iant@golang.org> 	* pecoff.c: Include <windows.h> if available.	(coff_add): On Windows call GetModuleHandle to get base address. 2023-11-29  Ian Lance Taylor  <iant@golang.org> 	* fileline.c: Include <windows.h> if available.	(windows_get_executable_path): New static function.	(fileline_initialize): Call windows_get_executable_path.	* configure.ac: Checked for windows.h	* configure: Regenerate.	* config.h.in: Regenerate. 2023-10-22  Iain Sandoe  <iain@sandoe.co.uk> 	* configure: Regenerate.	* configure.ac: Handle Darwin rpaths. 2023-08-07  Nick Alcock  <nick.alcock@oracle.com> 	* configure: Regenerate. 2023-08-07  Alexander von Gluck IV  <kallisti5@unixzen.com> 	* configure: Regenerate. 2023-08-07  Nick Alcock  <nick.alcock@oracle.com> 	* configure: Regenerate. 2023-08-07  Nick Alcock  <nick.alcock@oracle.com> 	* configure: Regenerate. 2023-08-07  H.J. Lu  <hjl.tools@gmail.com> 	* configure: Regenerate. 2023-08-07  H.J. Lu  <hjl.tools@gmail.com> 	* configure: Regenerate. 2023-08-03  Richard Biener  <rguenther@suse.de> 	* zstdtest.c (test_samples): Properly compute the allocation	size for the uncompressed data. 2023-07-31  Ian Lance Taylor  <iant@golang.org> 	* configure.ac: Check for _pgmptr declaration.	* fileline.c (fileline_initialize): Check for _pgmfptr before	/proc/self/exec.	* configure, config.h.in: Regenerate. 2023-03-28  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_zstd_read_fse): Call elf_fetch_bits after reading	bits, not before.  Add unlikely for error case.	(elf_zstd_offset_table): Regenerate.	(elf_zstd_read_huff): Clear 13 entries in weight_mark, not 12.	(elf_zstd_read_literals): For a single stream adjust by	total_streams_size, not compressed_size. 2023-01-20  Ian Lance Taylor  <iant@golang.org> 	* dwarf.c (struct function_addrs): Change low and high fields to	uintptr_t.	(struct unit_addrs): Likewise.	(resolve_addr_index): Change address parameter to uintptr_t*.	(add_unit_addr): Change lowpc and highpc parameters to uintptr_t.	(add_function_range): Likewise.	(struct pcrange): Change lowpc and highpc fields to uintptr_t.	(add_low_high_range): Change add_range lowpc and highpc parameters	to uintptr_t.	(add_ranges_from_ranges): Likewise.	(add_ranges_from_rnglists): Likewise.	(add_low_high_range): Chnage lowpc and highpc variables to	uintpr_t.	(add_ranges_from_rnglists): Change some local variables to	uintptr_t.	(add_ranges_from_ranges): Change base parameter to uintptr_t.	(add_ranges_from_rnglists): Likewise.	(read_function_entry): Likewise.	(resolve_addr_index): Add explicit casts to uintptr_t.	(update_pcrange): Likewise.	(add_ranges_from_ranges): Likewise.	(add_ranges_from_rnglists): Likewise.	(read_function_entry): Likewise. 2023-01-17  Martin Liska  <mliska@suse.cz> 	* Makefile.in: Regenerate. 2023-01-06  Ian Lance Taylor  <iant@golang.org> 	PR libbacktrace/108297	* configure.ac: Test whether linker supports --build-id.	* Makefile.am: Only run --build-id tests if supported.	* configure, Makefile.in: Regenerate. 2022-12-17  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_fetch_backward_init): New static function.	(ZSTD_TABLE_SIZE): Use huffman scratch space size rather than	literal size.	(ZSTD_TABLE_WORK_LIT_SIZE): Don't define.	(elf_zstd_read_huff): Use elf_fetch_backward_init.	(elf_zstd_read_literals): New static function.	(ZSTD_LIT_RAW, ZSTD_LIT_RLE, ZSTD_LIT_HUFF): Don't define.	(struct elf_zstd_literals): Don't define.	(elf_zstd_literal_output): Remove static function.	(elf_zstd_decompress): Use elf_fetch_backward_init and	elf_zstd_read_literals.  Rewrite literal copying.< 2022-12-10  Ian Lance Taylor  <iant@golang.org> 	* elf.c (ZSTD_TABLE_*): Use elf_zstd_fse_baseline_entry.	(ZSTD_ENCODE_BASELINE_BITS): Define.	(ZSTD_DECODE_BASELINE, ZSTD_DECODE_BASEBITS): Define.	(elf_zstd_literal_length_base): New static const array.	(elf_zstd_match_length_base): Likewise.	(struct elf_zstd_fse_baseline_entry): Define.	(elf_zstd_make_literal_baseline_fse): New static function.	(elf_zstd_make_offset_baseline_fse): Likewise.	(elf_zstd_make_match_baseline_fse): Likewise.	(print_table, main): Use elf_zstd_fse_baseline_entry.	(elf_zstd_lit_table, elf_zstd_match_table): Likewise.	(elf_zstd_offset_table): Likewise.	(struct elf_zstd_seq_decode): Likewise.  Remove use_rle and rle	fields.	(elf_zstd_unpack_seq_decode): Use elf_zstd_fse_baseline_entry,	taking a conversion function.  Convert RLE to FSE.	(elf_zstd_literal_length_baseline): Remove.	(elf_zstd_literal_length_bits): Remove.	(elf_zstd_match_length_baseline): Remove.	(elf_zstd_match_length_bits): Remove.	(elf_zstd_decompress): Use elf_zstd_fse_baseline_entry.  Rewrite	and simplify main loop. 2022-12-08  Ian Lance Taylor  <iant@golang.org> 	* configure.ac: Check for zstd library and	--compress-debug-sections=zstd linker option.	* Makefile.am (zstdtest_*): New targets.	(zstdtest_alloc_*, ctestzstd_*): New targets.	(BUILDTESTS): Add zstdtest, zstdtest_alloc, ctestzstd as	appropriate.	* elf.c (ELFCOMPRESS_ZSTD): Define.	(elf_fetch_bits): Rename from elf_zlib_fetch.  Update uses.	(elf_fetch_bits_backward): New static function.	(ZLIB_HUFFMAN_*): Rename from HUFFMAN_*.  Update uses.	(ZLIB_TABLE_*): Rename from ZDEBUG_TABLE_*.  Update uses.	(ZSTD_TABLE_*): Define.	(struct elf_zstd_fse_entry): Define.	(elf_zstd_read_fse): New static function.	(elf_zstd_build_fse): Likewise.	(lit): Define if BACKTRACE_GENERATE_ZSTD_FSE_TABLES.	(match, offset, next, print_table, main): Likewise.	(elf_zstd_lit_table): New static const array.	(elf_zstd_match_table, elf_zstd_offset_table): Likewise.	(elf_zstd_read_huff): New static function.	(struct elf_zstd_seq_decode): Define.	(elf_zstd_unpack_seq_decode): New static function.	(ZSTD_LIT_*): Define.	(struct elf_zstd_literals): Define.	(elf_zstd_literal_output): New static function.	(ZSTD_LITERAL_LENGTH_BASELINE_OFFSET): Define.	(elf_zstd_literal_length_baseline): New static const array.	(elf_zstd_literal_length_bits): Likewise.	(ZSTD_MATCH_LENGTH_BASELINE_OFFSET): Define.	(elf_zstd_match_length_baseline): New static const array.	(elf_zstd_match_length_bits): Likewise.	(elf_zstd_decompress): New static function.	(ZDEBUG_TABLE_SIZE): New definition.	(elf_uncompress_chdr): Support ELF_COMPRESS_ZSTD.	(backtrace_uncompress_zstd): New function.	(elf_add): Use ZLIB_TABLE_SIZE for zlib-gnu sections.	* internal.h (backtrace_uncompress_zstd): Declare.	* zstdtest.c: New file.	* configure, config.h.in, Makefile.in: Regenerate. 2022-10-12  Martin Liska  <mliska@suse.cz> 	* configure: Regenerate. 2022-10-11  Olivier Hainque  <hainque@adacore.com>	    Olivier Hainque  <hainque@adacore.com> 	* configure: Regenerate. 2022-07-08  Ian Lance Taylor  <iant@golang.org> 	* configure.ac: Check for sys/link.h.  Use either link.h or	sys/link.h when checking for dl_iterate_phdr.	* elf.c: Include sys/link.h if available.	* configure, config.h.in: Regenerate. 2022-07-07  Ian Lance Taylor  <iant@golang.org> 	* macho.c (backtrace_initialize) [HAVE_MACH_O_DYLD_H]: Don't exit	loop if we can't find debug info for one shared library. 2022-07-07  Ian Lance Taylor  <iant@golang.org> 	* Makefile.am (MAKETESTS): New variable split out of TESTS.	(CLEANFILES): Replace TESTS with BUILDTESTS and MAKETESTS.	* Makefile.in: Regenerate. 2022-06-27  Ian Lance Taylor  <iant@golang.org> 	* configure.ac: Use grep instead of fgrep.	* configure, Makefile.in: Regenerate. 2022-05-28  Ian Lance Taylor  <iant@golang.org> 	PR libbacktrace/105721	* README: Update. 2022-04-05  Ian Lance Taylor  <iant@golang.org> 	* elf.c (elf_zlib_inflate): Don't skip initial aligned byte in	uncompressed block. 2022-02-17  Ian Lance Taylor  <iant@golang.org>

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