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Author SHA1 Message Date
Richard Biener
9ae4f4ae44 [libbacktrace] fix up broken test 
zstdtest has some inline data where some testcases lack the
uncompressed length field.  Thus it computes that but still
ends up allocating memory for the uncompressed buffer based on
that (zero) length.  Oops.  Causes memory corruption if the
allocator returns non-NULL.

libbacktrace/
	* zstdtest.c (test_samples): Properly compute the allocation
	size for the uncompressed data.
 2023-08-03 11:47:58 -07:00
Ian Lance Taylor
c1c86fa2f0 libbacktrace: look for _pgmptr on Windows 
Patch from Andres Freund:
	* configure.ac: Check for _pgmptr declaration.
	* fileline.c (fileline_initialize): Check for _pgmfptr before
	/proc/self/exec.
	* configure, config.h.in: Regenerate.
 2023-07-31 17:02:14 -07:00
Ian Lance Taylor
cdb64b688d libbacktrace: minor fixes for zstd decompression 
* 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.
 2023-03-28 13:10:54 -07:00
Ian Lance Taylor
afe2967c77 libbacktrace: change PC variables from uint64_t to uintptr_t 
Change variables holding PC values from uint64_t to uintptr_t.
	Patch by Björn Schäpers.
	* 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.
 2023-01-20 14:25:38 -08:00
Ian Lance Taylor
ad106d5fdd libbacktrace: don't run --build-id tests if it is not supported 
PR libbacktrace/108297
	* configure.ac: Test whether linker supports --build-id.
	* Makefile.am: Only run --build-id tests if supported.
	* configure, Makefile.in: Regenerate.
 2023-01-06 09:46:08 -08:00
Ian Lance Taylor
da7eff2f37 libbacktrace: unpack literals into output buffer 
* 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.<
 2022-12-16 18:53:11 -08:00
Ian Lance Taylor
fd9442f7b5 libbacktrace: rewrite and simplify main zstd loop 
* 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.
 2022-12-09 17:47:18 -08:00
Ian Lance Taylor
c992dd8a9b libbacktrace: support zstd decompression 
Support decompressing --compress-debug-sections=zstd.
	* 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.
 2022-12-07 16:27:12 -08:00
Ian Lance Taylor
8602fda64e libbacktrace: check for sys/link.h 
QNX uses sys/link.h rather than link.h for dl_iterate_phdr

Fixes #86

	* 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.
 2022-07-08 10:35:17 -07:00
Ian Lance Taylor
7409767403 libbacktrace: don't exit Mach-O dyld library loop on one failure 
* macho.c (backtrace_initialize) [HAVE_MACH_O_DYLD_H]: Don't exit
	loop if we can't find debug info for one shared library.

For #85
 2022-07-07 16:55:51 -07:00
Ian Lance Taylor
bc78542d20 libbacktrace: don't let "make clean" remove allocfail.sh 
* Makefile.am (MAKETESTS): New variable split out of TESTS.
	(CLEANFILES): Replace TESTS with BUILDTESTS and MAKETESTS.
	* Makefile.in: Regenerate.

Fixes #81
 2022-07-07 16:18:23 -07:00
Ian Lance Taylor
b6ddb3aa1b libbacktrace: replace fgrep with grep in configure script 
Patch by Xi Ruoyao.

	* configure.ac: Use grep instead of fgrep.
	* configure: Regenerate.
 2022-07-07 15:46:41 -07:00
Ian Lance Taylor
4d2dd0b172 libbacktrace: don't skip initial aligned byte in uncompressed block 
Patch from Rui Ueyama, who says:

libbacktrace occasionally fails to decompress compressed debug info
even though the sections contain valid zlib streams. The cause of the
issue is an off-by-one error.

If a zlib data block is a plain data (uncompressed data), the next two
bytes contain the size of the block. These two bytes value is byte-
aligned, so if we read-ahead more than 8 bits, we need to unread it.

So, the correct condition to determine whether or not we need to
unread a byte is bits >= 8 and not bits > 8. Due to this error,
if the last read bits happened to end at a byte boundary, the next
byte would be skipped. That caused the decompression failure.

This bug was originally reported against the mold linker.
rui314/mold#402

	* elf.c (elf_zlib_inflate): Don't skip initial aligned byte in
	uncompressed block.
 2022-04-05 16:10:04 -07:00
Ian Lance Taylor
2446c66076 libbacktrace: gather address ranges from skeleton units 
* dwarf.c (find_address_ranges): Handle skeleton units.
	(read_function_entry): Likewise.
 2022-02-17 08:27:13 -08:00
Ian Lance Taylor
509f74a2fb libbacktrace: initialize DWARF 5 fields of unit 
When I added the fields in 2019-12-13 I forgot to initialize them.

	* dwarf.c (build_address_map): Initialize DWARF 5 fields of unit.
 2022-02-16 11:42:40 -08:00
Ian Lance Taylor
c062afc28c configury: support --disable-werror 2022-02-16 11:41:40 -08:00
Ian Lance Taylor
332522e199 configury: update to recent versions 
Copied from GCC tip.

Fixes #84
 2022-01-18 20:10:43 -08:00
Ian Lance Taylor
d0f5e95a87 config/override.m4: don't require exactly autoconf 2.69 
Fixes #71
Fixes #74
 2021-05-29 14:17:08 -07:00
Ian Lance Taylor
4f57c99971 libbacktrace: don't special case file 0 
It's no longer necessary as file 0 is now set up in all cases.

	* dwarf.c (read_line_program): Don't special case file 0.
	(read_function_entry): Likewise.

Fixes #69
 2021-03-02 18:17:36 -08:00
Ian Lance Taylor
59473f7906 libbacktrace: pass -1 to error callback for unrecognized DWARF 
PR libbacktrace/98818
	* dwarf.c (dwarf_buf_error): Add errnum parameter.  Change all
	callers.
	* backtrace.h: Update backtrace_error_callback comment.
 2021-03-02 13:49:18 -08:00
Ian Lance Taylor
7854b0bc25 libbacktrace: check for objcopy --add-gnu-debuglink using --help 
* configure.ac: Check for objcopy --add-gnu-debuglink by using
	objcopy --help.
	* configure: Regenerate
 2021-02-11 18:11:18 -08:00
Ian Lance Taylor
dedbe13fda libbacktrace: don't fail tests if dwz fails 
* Makefile.am (%_dwz): If dwz fails, use uncompressed debug info.
	* Makefile.in: Regenerate.
 2021-01-18 14:58:41 -08:00
Ian Lance Taylor
096650403a libbacktrace: use correct directory/filename for DWARF 5 
PR debug/98716
	* dwarf.c (read_v2_paths): Allocate zero entry for dirs and
	filenames.
	(read_line_program): Remove parameter u, change caller.  Don't
	subtract one from dirs and filenames index.
	(read_function_entry): Don't subtract one from filenames index.
 2021-01-18 14:57:11 -08:00
Jakub Jelinek
5496ee0a1a Update copyright years. 2021-01-18 14:56:19 -08:00
Ian Lance Taylor
1da441c1b0 libbacktrace: correct buffer overflow tests 
* dwarf.c (resolve_string): Use > rather than >= to check whether
	string index extends past buffer.
	(resolve_addr_index): Similarly for address index.
 2020-12-04 11:19:55 -08:00
Ian Lance Taylor
f24e9f401f libbacktrace: update README 2020-10-26 13:45:23 -07:00
Ian Lance Taylor
73eb1803b1 libbacktrace: use __attribute__((__fallthrough__)) 
Use an attribute rather than a comment when falling through a switch case.

	* internal.h (ATTRIBUTE_FALLTHROUGH): Define.
	* elf.c (elf_zlib_inflate): Use ATTRIBUTE_FALLTHROUGH.
 2020-10-20 11:50:23 -07:00
Ian Lance Taylor
5009c11398 libbacktrace: replace Tom Sawyer with Opticks 
The main source uses Opticks now.
 2020-09-30 20:08:56 -07:00
Ian Lance Taylor
3bd25ab355 libbacktrace/ChangeLog: 
PR libbacktrace/97082
        * Makefile.am (check_DATA): Add mtest.dSYM if USE_DSYMUTIL.
        * Makefile.in: Regenerate.
 2020-09-28 13:57:18 -07:00
Ian Lance Taylor
1286f69fde libbacktrace: only run dsymutil with Mach-O 
libbacktrace/ChangeLog:
	PR libbacktrace/97227
	* configure.ac (USE_DSYMUTIL): Define instead of HAVE_DSYMUTIL.
	* Makefile.am: Change all uses of HAVE_DSYMUTIL to USE_DSYMUTIL.
	* configure: Regenerate.
	* Makefile.in: Regenerate.
 2020-09-28 13:50:34 -07:00
Ian Lance Taylor
95e8e96c86 libbacktrace: handle pc == low correctly 
* dwarf.c (report_inlined_functions): Handle PC == -1 and PC ==
	p->low.
	(dwarf_lookup_pc): Likewise.
 2020-09-27 17:30:21 -07:00
Ian Lance Taylor
c8a81d4e3a libbacktrace: use ELF symbol table if no debug info available 
PR libbacktrace/97080
	* fileline.c (backtrace_syminfo_to_full_callback): New function.
	(backtrace_syminfo_to_full_error_callback): New function.
	* elf.c (elf_nodebug): Call syminfo_fn if possible.
	* internal.h (struct backtrace_call_full): Define.
	(backtrace_syminfo_to_full_callback): Declare.
	(backtrace_syminfo_to_full_error_callback): Declare.
	* mtest.c (f3): Only check all[i] if data.index permits.
 2020-09-27 17:29:53 -07:00
Iain Sandoe
753968c2e8 libbacktrace, Mach-O : Support PowerPC archs. 
This adds the PPC architecture variants for Mach-O libbacktrace.

With this (as for X86 and Arm) when dsymutil is run on the binary
we get a basic usable backtrace.

Testsuite results on powerpc-apple-darwin9 are the same as for X86:
 * btest fails (TBC why)
 * dwarf5 tests fail because dsymutil does not handle that so far.

libbacktrace/ChangeLog:

	* macho.c (MACH_O_CPU_TYPE_PPC): New.
	(MACH_O_CPU_TYPE_PPC64): New.
	Add compile-tests for powerpc to the Mach-O variants.

Close #55
 2020-09-27 17:29:21 -07:00
Ian Lance Taylor
77bcaa99f5 libbacktrace: support MiniDebugInfo 
libbacktrace/ChangeLog:
	PR libbacktrace/93608
	Add support for MiniDebugInfo.
	* elf.c (struct elf_view): Define.  Replace most uses of
	backtrace_view with elf_view.
	(elf_get_view): New static functions.  Replace most calls of
	backtrace_get_view with elf_get_view.
	(elf_release_view): New static functions.  Replace most calls of
	backtrace_release_view with elf_release_view.
	(elf_uncompress_failed): Rename from elf_zlib_failed.  Change all
	callers.
	(LZMA_STATES, LZMA_POS_STATES, LZMA_DIST_STATES): Define.
	(LZMA_DIST_SLOTS, LZMA_DIST_MODEL_START): Define.
	(LZMA_DIST_MODEL_END, LZMA_FULL_DISTANCES): Define.
	(LZMA_ALIGN_SIZE, LZMA_LEN_LOW_SYMBOLS): Define.
	(LZMA_LEN_MID_SYMBOLS, LZMA_LEN_HIGH_SYMBOLS): Define.
	(LZMA_LITERAL_CODERS_MAX, LZMA_LITERAL_CODER_SIZE): Define.
	(LZMA_PROB_IS_MATCH_LEN, LZMA_PROB_IS_REP_LEN): Define.
	(LZMA_PROB_IS_REP0_LEN, LZMA_PROB_IS_REP1_LEN): Define.
	(LZMA_PROB_IS_REP2_LEN, LZMA_PROB_IS_REP0_LONG_LEN): Define.
	(LZMA_PROB_DIST_SLOT_LEN, LZMA_PROB_DIST_SPECIAL_LEN): Define.
	(LZMA_PROB_DIST_ALIGN_LEN): Define.
	(LZMA_PROB_MATCH_LEN_CHOICE_LEN): Define.
	(LZMA_PROB_MATCH_LEN_CHOICE2_LEN): Define.
	(LZMA_PROB_MATCH_LEN_LOW_LEN): Define.
	(LZMA_PROB_MATCH_LEN_MID_LEN): Define.
	(LZMA_PROB_MATCH_LEN_HIGH_LEN): Define.
	(LZMA_PROB_REP_LEN_CHOICE_LEN): Define.
	(LZMA_PROB_REP_LEN_CHOICE2_LEN): Define.
	(LZMA_PROB_REP_LEN_LOW_LEN): Define.
	(LZMA_PROB_REP_LEN_MID_LEN): Define.
	(LZMA_PROB_REP_LEN_HIGH_LEN): Define.
	(LZMA_PROB_LITERAL_LEN): Define.
	(LZMA_PROB_IS_MATCH_OFFSET, LZMA_PROB_IS_REP_OFFSET): Define.
	(LZMA_PROB_IS_REP0_OFFSET, LZMA_PROB_IS_REP1_OFFSET): Define.
	(LZMA_PROB_IS_REP2_OFFSET): Define.
	(LZMA_PROB_IS_REP0_LONG_OFFSET): Define.
	(LZMA_PROB_DIST_SLOT_OFFSET): Define.
	(LZMA_PROB_DIST_SPECIAL_OFFSET): Define.
	(LZMA_PROB_DIST_ALIGN_OFFSET): Define.
	(LZMA_PROB_MATCH_LEN_CHOICE_OFFSET): Define.
	(LZMA_PROB_MATCH_LEN_CHOICE2_OFFSET): Define.
	(LZMA_PROB_MATCH_LEN_LOW_OFFSET): Define.
	(LZMA_PROB_MATCH_LEN_MID_OFFSET): Define.
	(LZMA_PROB_MATCH_LEN_HIGH_OFFSET): Define.
	(LZMA_PROB_REP_LEN_CHOICE_OFFSET): Define.
	(LZMA_PROB_REP_LEN_CHOICE2_OFFSET): Define.
	(LZMA_PROB_REP_LEN_LOW_OFFSET): Define.
	(LZMA_PROB_REP_LEN_MID_OFFSET): Define.
	(LZMA_PROB_REP_LEN_HIGH_OFFSET): Define.
	(LZMA_PROB_LITERAL_OFFSET): Define.
	(LZMA_PROB_TOTAL_COUNT): Define.
	(LZMA_IS_MATCH, LZMA_IS_REP, LZMA_IS_REP0): Define.
	(LZMA_IS_REP1, LZMA_IS_REP2, LZMA_IS_REP0_LONG): Define.
	(LZMA_DIST_SLOT, LZMA_DIST_SPECIAL, LZMA_DIST_ALIGN): Define.
	(LZMA_MATCH_LEN_CHOICE, LZMA_MATCH_LEN_CHOICE2): Define.
	(LZMA_MATCH_LEN_LOW, LZMA_MATCH_LEN_MID): Define.
	(LZMA_MATCH_LEN_HIGH, LZMA_REP_LEN_CHOICE): Define.
	(LZMA_REP_LEN_CHOICE2, LZMA_REP_LEN_LOW): Define.
	(LZMA_REP_LEN_MID, LZMA_REP_LEN_HIGH, LZMA_LITERAL): Define.
	(elf_lzma_varint): New static function.
	(elf_lzma_range_normalize): New static function.
	(elf_lzma_bit, elf_lzma_integer): New static functions.
	(elf_lzma_reverse_integer): New static function.
	(elf_lzma_len, elf_uncompress_lzma_block): New static functions.
	(elf_uncompress_lzma): New static function.
	(backtrace_uncompress_lzma): New function.
	(elf_add): Add memory and memory_size parameters.  Change all
	callers.  Look for .gnu_debugdata section, and, if found,
	decompress it and use it for symbols and debug info.  Permit the
	descriptor parameter to be -1.
	* internal.h (backtrace_uncompress_lzma): Declare.
	* mtest.c: New file.
	* xztest.c: New file.
	* configure.ac: Check for nm, xz, and comm programs.  Check for
	liblzma library.
	(HAVE_MINIDEBUG): Define.
	* Makefile.am (mtest_SOURCES): Define.
	(mtest_CFLAGS, mtest_LDADD): Define.
	(TESTS): Add mtest_minidebug if HAVE_MINIDEBUG.
	(%_minidebug): New pattern rule, if HAVE_MINIDEBUG.
	(xztest_SOURCES, xztest_CFLAGS, xztest_LDADD): Define.
	(xztest_alloc_SOURCES, xztest_alloc_CFLAGS): Define
	(xztest_alloc_LDADD): Define.
	(BUILDTESTS): Add mtest, xztest, xztest_alloc.
	(CLEANFILES): Add files created by minidebug pattern.
	(btest.lo): Correct INCDIR reference.
	(mtest.lo, xztest.lo, ztest.lo): New targets.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* Makefile.in: Regenerate.

Close #38
 2020-09-27 17:28:39 -07:00
Ian Lance Taylor
2f5efbfa32 libbacktrace: don't strip leading underscore on 64-bit PE 
* pecoff.c (coff_initialize_syminfo): Add is_64 parameter.
	(coff_add): Determine and pass is_64.

Closes #28
 2020-09-27 17:19:28 -07:00
Ian Lance Taylor
4ae8d988a7 libbacktrace: fetch executable path on macOS 
PR libbacktrace/96973
	* fileline.c (macho_get_executable_path): New static function.
	(fileline_initialize): Call macho_get_executable_path.
 2020-09-27 17:18:38 -07:00
Ian Lance Taylor
430dc8b6fe libbacktrace: avoid ambiguous binary search 
Searching for a range match can cause the search order to not match
the sort order, which can cause libbacktrace to miss matching entries.
Allocate an extra entry at the end of function_addrs and unit_addrs vectors,
so that we can safely compare to the next entry when searching.
Adjust the matching code accordingly.

Fixes #44

	* dwarf.c (function_addrs_search): Compare against the next entry
	low address, not the high address.
	(unit_addrs_search): Likewise.
	(build_address_map): Add a trailing unit_addrs.
	(read_function_entry): Add a trailing function_addrs.
	(read_function_info): Likewise.
	(report_inlined_functions): Search backward for function_addrs
	match.
	(dwarf_lookup_pc): Search backward for unit_addrs and
	function_addrs matches.
 2020-09-27 17:17:59 -07:00
Ian Lance Taylor
5dec0fae31 libbacktrace: fix tipo in comment 
* simple.c (simple_unwind): Correct comment spelling.

Close #47
 2020-09-27 17:17:10 -07:00
Ian Lance Taylor
030bd0a709 libbacktrace: correct memory lengths in Mach-O dsym support 
* macho.c (macho_add_dsym): Make space for '/' in dsym.  Use
	correct length when freeing diralc.

Close #40
 2020-09-27 17:16:15 -07:00
Ian Lance Taylor
b3b57f9ee0 libbacktrace: correctly swap Mach-O 32-bit file offset 
libbacktrace/ChangeLog:
	PR libbacktrace/96973
	* macho.c (macho_add_fat): Correctly swap 32-bit file offset.
 2020-09-27 17:15:03 -07:00
Ian Lance Taylor
886aef3783 libbacktrace: only match magic number at start of line 
libbacktrace/ChangeLog:
	PR libbacktrace/96971
	* filetype.awk: Only match magic number at start of line.
 2020-09-27 17:14:27 -07:00
Ian Lance Taylor
89b2b5066b libbacktrace: add Mach-O 64-bit FAT support 
libbacktrace/:
	* macho.c (MACH_O_MH_MAGIC_FAT_64): Define.
	(MACH_O_MH_CIGAM_FAT_64): Define.
	(struct macho_fat_arch_64): Define.
	(macho_add_fat): Add and use is_64 parameter.
	(macho_add): Recognize 64-bit fat files.
 2020-09-27 17:13:21 -07:00
Ian Lance Taylor
aaa51b6dbe libbacktrace: test linker support for DWARF 5 
On AIX, the compiler supports DWARF 5 but the linker does not.

2020-07-07 Clement Chigot <clement.chigot@atos.net>

	* configure.ac: Test linker support for DWARF5
	* configure: Regenerate
 2020-09-27 17:12:15 -07:00
Ian Lance Taylor
9b7f216e86 libbacktrace: mark test_large parameter unused in ztest.c 2020-05-13 11:11:13 -07:00
Ian Lance Taylor
d68a7ac6dd libbacktrace: treat EACCESS like ENOENT 
For https://gcc.gnu.org/PR95061
 2020-05-13 10:29:45 -07:00
Ian Lance Taylor
14465a9574 libbacktrace: declare getpagesize if necessary 
Fixes https://gcc.gnu.org/PR95012.
 2020-05-11 10:54:46 -07:00
Ian Lance Taylor
7206f5bd06 libbacktrace: don't crash if ELF file has no sections 
Patch from Roland McGrath.

Fixes #41
 2020-05-09 20:36:19 -07:00
Ian Lance Taylor
ca0de0517f libbacktrace: don't free ELF strtab if error occurs after saving syminfo 
Fixes #29
 2020-02-19 10:32:09 -08:00
Ian Lance Taylor
4e548e735f libbacktrace: add preliminary Mach-O support 2020-02-18 18:57:14 -08:00
Ian Lance Taylor
929d6205cf libbacktrace: always pass -g when compiling test code 
This approach required adding a few casts to ztest.c, as it is now
compiled with -Wall.

Fixes GCC PR libbacktrace/90636
 2020-02-18 18:49:42 -08:00