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2019-11-14 Release Manager
* GCC 7.5.0 released.
2018-12-06 Release Manager
* GCC 7.4.0 released.
2018-01-25 Release Manager
* GCC 7.3.0 released.
2017-10-10 Paolo Carlini <>
* elf.c: Fix typo in the last commit, SFH_COMPRESSED vs SHF_COMPRESSED.
2017-10-10 Ian Lance Taylor <>
PR go/80914
* elf.c (SHF_COMPRESSED): Define.
(elf_add): Ignore debug sections with SHF_COMPRESSED set.
2017-08-14 Release Manager
* GCC 7.2.0 released.
2017-05-02 Release Manager
* GCC 7.1.0 released.
2017-03-08 Sam Thursfield <>
* btest.c (test5): Replace #ifdef guard with 'unused' attribute
to fix compile warning when BACKTRACE_SUPPORTED isn't defined.
2017-01-01 Jakub Jelinek <>
Update copyright years.
2016-11-15 Matthias Klose <>
* configure: Regenerate.
2016-09-11 Carlos Liam <>
* all: Remove meaningless trailing whitespace.
2016-05-18 Uros Bizjak <>
PR target/71161
* elf.c (phdr_callback) [__i386__]: Add
2016-03-02 Maxim Ostapenko <>
* elf.c (backtrace_initialize): Properly initialize elf_fileline_fn to
avoid possible crash.
(elf_add): Don't set *fileline_fn to elf_nodebug value in case of
missing debug info anymore.
2016-02-06 John David Anglin <>
* mmap.c (MAP_FAILED): Define if not defined.
2016-01-04 Jakub Jelinek <>
Update copyright years.
2015-12-18 Andris Pavenis <>
* Specify that DJGPP do not have mmap
even when sys/mman.h exists.
* configure: Regenerate
2015-12-09 John David Anglin <>
PR libgfortran/68115
* Set libbacktrace_cv_sys_sync to no on hppa*-*-hpux*.
* configure: Regenerate.
* elf.c (backtrace_initialize): Cast __sync_bool_compare_and_swap call
to void.
2015-09-17 Ian Lance Taylor <>
* posix.c (backtrace_open): Cast second argument of open() to int.
2015-09-11 Ian Lance Taylor <>
* (backtrace.lo): Depend on internal.h.
(sort.lo, stest.lo): Add explicit dependencies.
* Rebuild.
2015-09-09 Hans-Peter Nilsson <>
* backtrace.c: #include <sys/types.h>.
2015-09-08 Ian Lance Taylor <>
PR other/67457
* backtrace.c: #include "internal.h".
(struct backtrace_data): Add can_alloc field.
(unwind): If can_alloc is false, don't try to get file/line
(backtrace_full): Set can_alloc field in bdata.
* alloc.c (backtrace_alloc): Don't call error_callback if it is
* mmap.c (backtrace_alloc): Likewise.
* internal.h: Update comments for backtrace_alloc and
2015-09-08 Ian Lance Taylor <>
PR other/67457
* mmap.c (backtrace_alloc): Correct test for mmap failure.
2015-08-31 Ulrich Weigand <>
* For spu-*-* targets, set have_fcntl to no.
* configure: Regenerate.
2015-08-27 Ulrich Weigand <>
* Remove [disable-shared] argument to LT_INIT.
Remove setting PIC_FLAG when building as target library.
* configure: Regenerate.
2015-08-26 Hans-Peter Nilsson <>
* Only compile with -fPIC if the target
supports it.
* configure: Regenerate.
2015-08-24 Ulrich Weigand <>
* Set have_mmap to no on spu-*-* targets.
* configure: Regenerate.
2015-08-13 Ian Lance Taylor <>
* dwarf.c (read_function_entry): Add vec_inlined parameter.
Change all callers.
2015-06-11 Martin Sebor <>
PR sanitizer/65479
* dwarf.c (struct line): Add new field idx.
(line_compare): Use it.
(add_line): Set it.
(read_line_info): Reset it.
2015-05-29 Tristan Gingold <>
* pecoff.c: New file.
* (FORMAT_FILES): Add pecoff.c and dependencies.
* Regenerate.
* filetype.awk: Detect pecoff.
* Define BACKTRACE_SUPPORTS_DATA on elf platforms.
Add pecoff.
* btest.c (test5): Test enabled only if BACKTRACE_SUPPORTS_DATA is
* configure: Regenerate.
* pecoff.c: New file.
2015-05-13 Michael Haubenwallner <>
* Regenerated with automake-1.11.6.
* aclocal.m4: Likewise.
* configure: Likewise.
2015-01-24 Matthias Klose <>
* configure: Regenerate.
2015-01-05 Jakub Jelinek <>
Update copyright years.
2014-11-21 H.J. Lu <>
PR bootstrap/63784
* configure: Regenerated.
2014-11-11 David Malcolm <>
* ChangeLog.jit: New.
2014-11-11 Francois-Xavier Coudert <>
PR target/63610
* configure: Regenerate.
2014-10-23 Ian Lance Taylor <>
* internal.h (backtrace_atomic_load_pointer) [no atomic or sync]:
Fix to return void *.
2014-05-08 Ian Lance Taylor <>
* mmap.c (backtrace_free): If freeing a large aligned block of
memory, call munmap rather than holding onto it.
(backtrace_vector_grow): When growing a vector, double the number
of pages requested. When releasing the old version of a grown
vector, pass the correct size to backtrace_free.
2014-03-07 Ian Lance Taylor <>
* sort.c (backtrace_qsort): Use middle element as pivot.
2014-03-06 Ian Lance Taylor <>
* sort.c: New file.
* stest.c: New file.
* internal.h (backtrace_qsort): Declare.
* dwarf.c (read_abbrevs): Call backtrace_qsort instead of qsort.
(read_line_info, read_function_entry): Likewise.
(read_function_info, build_dwarf_data): Likewise.
* elf.c (elf_initialize_syminfo): Likewise.
* (libbacktrace_la_SOURCES): Add sort.c.
(stest_SOURCES, stest_LDADD): Define.
(check_PROGRAMS): Add stest.
2014-02-07 Misty De Meo <>
PR target/58710
* Use AC_LINK_IFELSE in check for
* configure: Regenerate.
2014-01-02 Richard Sandiford <>
Update copyright years
2013-12-06 Jakub Jelinek <>
* elf.c (ET_DYN): Undefine and define again.
(elf_add): Add exe argument, if true and ehdr.e_type is ET_DYN,
return early -1 without closing the descriptor.
(struct phdr_data): Add exe_descriptor.
(phdr_callback): If pd->exe_descriptor is not -1, for very first
call if dlpi_name is NULL just call elf_add with the exe_descriptor,
otherwise backtrace_close the exe_descriptor if not -1. Adjust
call to elf_add.
(backtrace_initialize): Adjust call to elf_add. If it returns
-1, set pd.exe_descriptor to descriptor, otherwise set it to -1.
2013-12-05 Ian Lance Taylor <>
* alloc.c (backtrace_vector_finish): Add error_callback and data
parameters. Call backtrace_vector_release. Return address base.
* mmap.c (backtrace_vector_finish): Add error_callback and data
parameters. Return address base.
* dwarf.c (read_function_info): Get new address base from
* internal.h (backtrace_vector_finish): Update declaration.
2013-11-27 Ian Lance Taylor <>
* dwarf.c (find_address_ranges): New static function, broken out
of build_address_map.
(build_address_map): Call it.
* btest.c (check): Check for missing filename or function, rather
than crashing.
(f3): Check that enough frames were returned.
2013-11-19 Jakub Jelinek <>
* backtrace.h (backtrace_syminfo_callback): Add symsize argument.
* elf.c (elf_syminfo): Pass 0 or sym->size to the callback as
last argument.
* btest.c (struct symdata): Add size field.
(callback_three): Add symsize argument. Copy it to the data->size
(f23): Set symdata.size to 0.
(test5): Likewise. If sizeof (int) > 1, lookup address of
((uintptr_t) &global) + 1. Verify symdata.val and symdata.size
* atomic.c: Include sys/types.h.
2013-11-18 Ian Lance Taylor <>
* Check for support of __atomic extensions.
* internal.h: Declare or #define atomic functions for use in
backtrace code.
* atomic.c: New file.
* dwarf.c (dwarf_lookup_pc): Use atomic functions.
(dwarf_fileline, backtrace_dwarf_add): Likewise.
* elf.c (elf_add_syminfo_data, elf_syminfo): Likewise.
(backtrace_initialize): Likewise.
* fileline.c (fileline_initialize): Likewise.
* (libbacktrace_la_SOURCES): Add atomic.c.
* configure,, Rebuild.
2013-11-18 Jakub Jelinek <>
* elf.c (SHN_UNDEF): Define.
(elf_initialize_syminfo): Add base_address argument. Ignore symbols
with st_shndx == SHN_UNDEF. Add base_address to address fields.
(elf_add): Adjust caller.
* elf.c (phdr_callback): Process info->dlpi_addr == 0 normally.
2013-11-16 Ian Lance Taylor <>
* backtrace.h (backtrace_create_state): Correct comment about
2013-11-15 Ian Lance Taylor <>
* backtrace.h (backtrace_syminfo): Update comment and parameter
name to take any address, not just a PC value.
* elf.c (STT_OBJECT): Define.
(elf_nosyms): Rename parameter pc to addr.
(elf_symbol_search): Rename local variable pc to addr.
(elf_initialize_syminfo): Add STT_OBJECT symbols to elf_symbols.
(elf_syminfo): Rename parameter pc to addr.
* btest.c (global): New global variable.
(test5): New test.
(main): Call test5.
2013-10-17 Ian Lance Taylor <>
* elf.c (elf_add): Don't get the wrong offsets if a debug section
is missing.
2013-10-15 David Malcolm <>
* Add --enable-host-shared, setting up
pre-existing PIC_FLAG variable within et al.
* configure: Regenerate.
2013-09-20 Alan Modra <>
* configure: Regenerate.
2013-07-23 Alexander Monakov <>
* elf.c (elf_syminfo): Loop over the elf_syminfo_data chain.
2013-07-23 Alexander Monakov <>
* elf.c (backtrace_initialize): Pass elf_fileline_fn to
dl_iterate_phdr callbacks.
2013-03-25 Ian Lance Taylor <>
* alloc.c: #include <sys/types.h>.
* mmap.c: Likewise.
2013-01-31 Ian Lance Taylor <>
* dwarf.c (read_function_info): Permit fvec parameter to be NULL.
(dwarf_lookup_pc): Don't use ddata->fvec if threaded.
2013-01-25 Jakub Jelinek <>
PR other/56076
* dwarf.c (read_line_header): Don't crash if DW_AT_comp_dir
attribute was not seen.
2013-01-16 Ian Lance Taylor <>
* dwarf.c (struct unit): Add filename and abs_filename fields.
(build_address_map): Set new fields when reading unit.
(dwarf_lookup_pc): If we don't find an entry in the line table,
just return the main file name.
2013-01-14 Richard Sandiford <>
Update copyright years.
2013-01-01 Ian Lance Taylor <>
PR bootstrap/54834
* (AM_CPPFLAGS): Remove -I ../gcc/include and -I
* Rebuild.
2013-01-01 Ian Lance Taylor <>
PR other/55536
* mmap.c (backtrace_alloc): Don't call sync functions if not
(backtrace_free): Likewise.
2012-12-12 John David Anglin <>
* mmapio.c: Define MAP_FAILED if not defined.
2012-12-11 Jakub Jelinek <>
PR bootstrap/54926
* (AM_CFLAGS): Remove -frandom-seed=$@.
* If --with-target-subdir, add -frandom-seed=$@
to EXTRA_FLAGS unconditionally, otherwise check whether the compiler
accepts it.
* Regenerated.
* configure: Regenerated.
2012-12-07 Jakub Jelinek <>
PR bootstrap/54926
* (AM_CFLAGS): Add -frandom-seed=$@.
* Regenerated.
2012-11-20 Ian Lance Taylor <>
* dwarf.c (read_attribute): Always clear val.
2012-11-13 Ian Lance Taylor <>
PR other/55312
* Only add -Werror if building a target library.
* configure: Rebuild.
2012-11-12 Ian Lance Taylor <>
Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Gerald Pfeifer <>
* Check for getexecname.
* fileline.c: #include <errno.h>. Define getexecname if not
(fileline_initialize): Try to find the executable in a few
different ways.
* print.c (error_callback): Only print the filename if it came
from the backtrace state.
* configure, Rebuild.
2012-10-29 Ian Lance Taylor <>
* mmap.c (backtrace_vector_release): Correct last patch: add
aligned, not size.
2012-10-29 Ian Lance Taylor <>
* mmap.c (backtrace_vector_release): Make sure freed block is
aligned on 8-byte boundary.
2012-10-26 Ian Lance Taylor <>
PR other/55087
* posix.c (backtrace_open): Add does_not_exist parameter.
* elf.c (phdr_callback): Do not warn if shared library could not
be opened.
* fileline.c (fileline_initialize): Update calls to
* internal.h (backtrace_open): Update declaration.
2012-10-26 Jack Howarth <>
PR target/55061
* Check for _Unwind_GetIPInfo function declaration.
* configure: Regenerate.
2012-10-24 Ian Lance Taylor <>
PR target/55061
* Check whether -funwind-tables option works.
* configure: Rebuild.
2012-10-11 Ian Lance Taylor <>
* Do not use dl_iterate_phdr on Solaris 10.
* configure: Rebuild.
2012-10-10 Ian Lance Taylor <>
* elf.c: Rename all Elf typedefs to start with b_elf, and be all
lower case.
2012-10-10 Hans-Peter Nilsson <>
* elf.c (elf_add_syminfo_data): Add casts to avoid warning.
2012-10-09 Ian Lance Taylor <>
* dwarf.c (dwarf_fileline): Add cast to avoid warning.
(backtrace_dwarf_add): Likewise.
2012-10-09 Ian Lance Taylor <>
Add support for tracing through shared libraries.
* Check for link.h and dl_iterate_phdr.
* elf.c: #include <link.h> if system has dl_iterate_phdr. #undef
ELF macros before #defining them.
(dl_phdr_info, dl_iterate_phdr): Define if system does not have
(struct elf_syminfo_data): Add next field.
(elf_initialize_syminfo): Initialize next field.
(elf_add_syminfo_data): New static function.
(elf_add): New static function, broken out of
backtrace_initialize. Call backtrace_dwarf_add instead of
(struct phdr_data): Define.
(phdr_callback): New static function.
(backtrace_initialize): Call elf_add.
* dwarf.c (struct dwarf_data): Add next and base_address fields.
(add_unit_addr): Add base_address parameter. Change all callers.
(add_unit_ranges, build_address_map): Likewise.
(add_line): Add ddata parameter. Change all callers.
(read_line_program, add_function_range): Likewise.
(dwarf_lookup_pc): New static function, broken out of
(dwarf_fileline): Call dwarf_lookup_pc.
(build_dwarf_data): New static function.
(backtrace_dwarf_add): New function.
(backtrace_dwarf_initialize): Remove.
* internal.h (backtrace_dwarf_initialize): Don't declare.
(backtrace_dwarf_add): Declare.
* configure, Rebuild.
2012-10-04 Gerald Pfeifer <>
* btest.c (f23): Avoid uninitialized variable warning.
2012-10-04 Ian Lance Taylor <>
* dwarf.c: If the system header files do not declare strnlen,
provide our own version.
2012-10-03 Ian Lance Taylor <>
* dwarf.c (read_uleb128): Fix overflow test.
(read_sleb128): Likewise.
(build_address_map): Don't change unit_buf.start.
2012-10-02 Uros Bizjak <>
PR other/54761
* configure, Regenerate.
2012-09-29 Ian Lance Taylor <>
PR other/54749
* fileline.c (fileline_initialize): Pass errnum as -1 when
reporting that we could not read executable information after a
previous failure.
2012-09-27 Ian Lance Taylor <>
PR bootstrap/54732
* Add no-dependencies to AM_INIT_AUTOMAKE.
* Add dependencies for all objects.
* configure, aclocal.m4, Rebuild.
2012-09-27 Ian Lance Taylor <>
PR other/54726
* elf.c (backtrace_initialize): Set *fileln_fn, not
2012-09-19 Ian Lance Taylor <>
* Only use GCC_CHECK_UNWIND_GETIPINFO when compiled
as a target library.
* configure: Rebuild.
2012-09-19 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Ian Lance Taylor <>
* backtrace.h: If we can't find <stdint.h>, use "gstdint.h".
* btest.c: Don't include <stdint.h>.
* dwarf.c: Likewise.
* configure, aclocal.m4,, Rebuild.
2012-09-18 Ian Lance Taylor <>
PR bootstrap/54623
* (AM_CPPFLAGS): Define.
(AM_CFLAGS): Remove -I options.
* Rebuild.
2012-09-18 Ian Lance Taylor <>
* posix.c (O_BINARY): Define if not defined.
(backtrace_open): Pass O_BINARY to open. Only call fcntl if
HAVE_FCNTL is defined.
* Test for the fcntl function.
* configure, Rebuild.
2012-09-18 Ian Lance Taylor <>
* btest.c (test1, test2, test3, test4): Add the unused attribute.
2012-09-18 Ian Lance Taylor <>
* dwarf.c: Correct test of HAVE_DECL_STRNLEN.
2012-09-18 Ian Lance Taylor <>
* mmapio.c: Don't define _GNU_SOURCE.
* configure, Rebuild.
2012-09-18 Ian Lance Taylor <>
* Check whether strnlen is declared.
* dwarf.c: Declare strnlen if not declared.
* configure, Rebuild.
2012-09-18 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* fileline.c: Include <stdlib.h>.
* mmap.c: Likewise.
2012-09-17 Ian Lance Taylor <>
PR bootstrap/54611
* nounwind.c (backtrace_full): Rename from backtrace. Add state
2012-09-17 Gerald Pfeifer <>
PR bootstrap/54611
* nounwind.c (backtrace_simple): Add state parameter.
2012-09-17 Ian Lance Taylor <>
PR bootstrap/54609
* unknown.c (unknown_fileline): Add state parameter, remove
fileline_data parameter, name error_callback parameter.
(backtrace_initialize): Add state parameter.
2012-09-17 Ian Lance Taylor <>
* Initial implementation.
Copyright (C) 2012-2017 Free Software Foundation, Inc.
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
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