Based on patch from Kirill Müller.

	* configure.ac (ACX_PROG_CC_WARNING_OPTS): Add -Wpointer-arith.
	* pecoff.c (coff_add): Cast void pointers.
	* xcoff.c (xcoff_add): Likewise.
	* configure: Regenerate.

Adjust the syntax to keep MSVC happy.

Fixes https://github.com/ianlancetaylor/libbacktrace/issues/131

	* pecoff.c (LDR_DLL_NOTIFICATION): Put function modifier
	inside parentheses.
	(LDR_REGISTER_FUNCTION): Likewise.

Also convert some FALLTHROUGH comments to ATTRIBUTE_FALLTHROUGH.

	* internal.h: Use __has_attribute to check for fallthrough
	attribute.
	* elf.c (elf_zstd_decompress): Use ATTRIBUTE_FALLTHROUGH rather
	than a FALLTHROUGH comment.

	* print.c (print_syminfo_callback): Add cast to avoid warning.

Fixes https://github.com/ianlancetaylor/libbacktrace/issues/59

	* print.c (print_syminfo_callback): New static function.
	(print_callback): Call backtrace_syminfo if there is no function
	or file name.

	* README: Add notes about dl_iterate_phdr.

	* 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.

Based on patch by Max Filippov.

	* 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.

We could get an infinite recursion in an odd case in which a
.gnu_debugdata section was added to a debug file, and mini_debuginfo
was put into the debug file, and the debug file was put into a
/usr/lib/debug directory to be found by build ID.  This combination
doesn't really make sense but we shouldn't get an infinite recursion.

	* 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.

	* btest.c (test5): Don't fail if symbol size is 0.
	* mtest.c (test5): Likewise.

	For PR libbacktrace/97082.
	* 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.

	* 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.

	* elf.c (elf_nodebug): Suggest -g.
	* macho.c (macho_nodebug): Suggest -g and dsymutil.
	* pecoff.c (coff_nodebug): Suggest -g.

	* dwarf.c: Remove trailing whitespace.
	* macho.c: Likewise.

	* elf.c (elf_fetch_bits_backward) Don't fail if no bits are
	available.

Patch from Björn Schäpers.

	* 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.

Patch from Björn Schäpers <bjoern@hazardy.de>.

	* 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.

This should fix a testsuite problem with Solaris ld that supports zlib
but not zlib-gabi.

	* 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.

Patch originally by GitHub user ubyte at
https://github.com/ianlancetaylor/libbacktrace/pull/120.

	* elf.c (elf_uncompress_chdr): Don't assume compressed section is
	aligned.

	* Makefile.am (libbacktrace_testing_ldflags): Define.
	(*_LDFLAGS): Add $(libbacktrace_testing_ldflags) for test
	programs.
	* Makefile.in: Regenerate

Fixes https://github.com/ianlancetaylor/libbacktrace/issues/118

	* elf.c (elf_uncompress_lzma_block): Skip all header padding bytes
	and verify that they are zero.

	PR libbacktrace/114201
	* elf.c (elf_add): Add caller_opd parameter.  Change all callers.
	Release opd data after all recursive calls.

These become another symbol table to search.  This is needed if people
use --strip-all rather than --strip-debug when adding a debuglink
section.

Patch is from GitHub user pickard1.

Fixes https://github.com/ianlancetaylor/libbacktrace/issues/113.

	* 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 -> 2024