gcc/libbacktrace
Tom de Vries eb33bf0a0a [libbacktrace] Reduce memory usage in build_address_map
In build_address_map we allocate a unit, and then look for addresses in the
unit, which we store in the addrs vector, with the elements pointing to the
unit.  However, if we cannot find addresses in the unit, the allocated unit is
not used.

Fix this by detecting if the allocated unit has been used, and reusing it
otherwise.

Bootstrapped and reg-tested on x86_64.

2018-12-28  Tom de Vries  <tdevries@suse.de>

	* dwarf.c (build_address_map): Reuse unused units.

From-SVN: r267445
2018-12-28 03:43:56 +00:00
..
aclocal.m4 Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
alloc.c [libbacktrace] Avoid realloc with size == 0 in backtrace_vector_release 2018-11-27 08:25:52 +00:00
allocfail.c [libbacktrace] Add allocfail.sh test-case 2018-12-12 13:50:51 +00:00
allocfail.sh [testsuite] Remove bashism from libbacktrace/allocfail.sh 2018-12-14 09:43:41 +00:00
atomic.c
backtrace-supported.h.in
backtrace.c backtrace.c: Revert last two changes. 2018-04-17 17:58:05 +00:00
backtrace.h re PR libbacktrace/87529 (libbacktrace API forces users to have memory leaks) 2018-10-05 14:09:07 +00:00
btest.c
ChangeLog [libbacktrace] Reduce memory usage in build_address_map 2018-12-28 03:43:56 +00:00
ChangeLog.jit
config.h.in Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
configure Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
configure.ac Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00
dwarf.c [libbacktrace] Reduce memory usage in build_address_map 2018-12-28 03:43:56 +00:00
edtest2.c
edtest.c
elf.c re PR other/86198 (Libbacktrace does not properly work with ".note.gnu.build-id" section) 2018-06-21 08:42:53 +03:00
fileline.c
filetype.awk
instrumented_alloc.c [libbacktrace] Add allocfail.sh test-case 2018-12-12 13:50:51 +00:00
internal.h [libbacktrace] Factor out backtrace_vector_free 2018-11-30 08:43:50 +00:00
Makefile.am [libbacktrace] Add allocfail.sh test-case 2018-12-12 13:50:51 +00:00
Makefile.in [libbacktrace] Add allocfail.sh test-case 2018-12-12 13:50:51 +00:00
mmap.c [libbacktrace] Don't point to released memory in backtrace_vector_release 2018-11-27 08:26:04 +00:00
mmapio.c
nounwind.c
pecoff.c
posix.c
print.c
read.c
README
simple.c
sort.c
state.c
stest.c
test_format.c [libbacktrace] Add tests for unused formats 2018-11-30 15:33:23 +00:00
testlib.c
testlib.h
ttest.c
unittest.c [libbacktrace] Don't point to released memory in backtrace_vector_release 2018-11-27 08:26:04 +00:00
unknown.c
xcoff.c xcoff.c (struct xcoff_line, [...]): Remove. 2018-08-01 21:55:05 +00:00
ztest.c

The libbacktrace library
Initially written by Ian Lance Taylor <iant@google.com>

The libbacktrace library may be linked into a program or library and
used to produce symbolic backtraces.  Sample uses would be to print a
detailed backtrace when an error occurs or to gather detailed
profiling information.

The libbacktrace library is provided under a BSD license.  See the
source files for the exact license text.

The public functions are declared and documented in the header file
backtrace.h, which should be #include'd by a user of the library.

Building libbacktrace will generate a file backtrace-supported.h,
which a user of the library may use to determine whether backtraces
will work.  See the source file backtrace-supported.h.in for the
macros that it defines.

As of September 2012, libbacktrace only supports ELF executables with
DWARF debugging information.  The library is written to make it
straightforward to add support for other object file and debugging
formats.