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Tom de Vries 0c155f24a9 [libbacktrace] Avoid realloc with size == 0 in backtrace_vector_release 
As of C17, realloc with size 0 is marked as an obsolescent feature.

Fix this in backtrace_vector_release by using free instead.

Bootstrapped and reg-tested on x86_64.

2018-11-27  Tom de Vries  <tdevries@suse.de>

	* alloc.c (backtrace_vector_release): Handle vec->size == 0 using free
	instead of realloc.
	* Makefile.am (check_PROGRAMS): Add unittest.
	* Makefile.in: Regenerate.
	* unittest.c: New file.

From-SVN: r266504
 		2018-11-27 08:25:52 +00:00
..
ChangeLog [libbacktrace] Avoid realloc with size == 0 in backtrace_vector_release 2018-11-27 08:25:52 +00:00
ChangeLog.jit Merger of dmalcolm/jit branch from git 2014-11-11 21:55:52 +00:00
Makefile.am [libbacktrace] Avoid realloc with size == 0 in backtrace_vector_release 2018-11-27 08:25:52 +00:00
Makefile.in [libbacktrace] Avoid realloc with size == 0 in backtrace_vector_release 2018-11-27 08:25:52 +00:00
README
…
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
atomic.c Update copyright years. 2018-01-03 11:03:58 +01:00
backtrace-supported.h.in Update copyright years. 2018-01-03 11:03:58 +01:00
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 elf.c (elf_add): Close descriptor if we use a debugfile. 2018-01-31 23:23:21 +00:00
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] Factor out read_initial_length 2018-11-22 00:06:27 +00:00
edtest.c Update copyright years. 2018-01-03 11:03:58 +01:00
edtest2.c Update copyright years. 2018-01-03 11:03:58 +01:00
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 Update copyright years. 2018-01-03 11:03:58 +01:00
filetype.awk configure.ac: Check for XCOFF32/XCOFF64. 2017-07-26 21:43:28 +00:00
internal.h Update copyright years. 2018-01-03 11:03:58 +01:00
mmap.c re PR other/68239 (libbacktrace allocation is sometimes very slow) 2018-01-25 02:24:45 +00:00
mmapio.c Update copyright years. 2018-01-03 11:03:58 +01:00
nounwind.c Update copyright years. 2018-01-03 11:03:58 +01:00
pecoff.c * pecoff.c (coff_add): Only release syms_view if it is valid. 2018-01-25 15:38:41 +00:00
posix.c Update copyright years. 2018-01-03 11:03:58 +01:00
print.c Update copyright years. 2018-01-03 11:03:58 +01:00
read.c Update copyright years. 2018-01-03 11:03:58 +01:00
simple.c Update copyright years. 2018-01-03 11:03:58 +01:00
sort.c Update copyright years. 2018-01-03 11:03:58 +01:00
state.c Update copyright years. 2018-01-03 11:03:58 +01:00
stest.c Update copyright years. 2018-01-03 11:03:58 +01:00
testlib.c Update copyright years. 2018-01-03 11:03:58 +01:00
testlib.h Update copyright years. 2018-01-03 11:03:58 +01:00
ttest.c Update copyright years. 2018-01-03 11:03:58 +01:00
unittest.c [libbacktrace] Avoid realloc with size == 0 in backtrace_vector_release 2018-11-27 08:25:52 +00:00
unknown.c Update copyright years. 2018-01-03 11:03:58 +01:00
xcoff.c xcoff.c (struct xcoff_line, [...]): Remove. 2018-08-01 21:55:05 +00:00
ztest.c elf.c (codes): Fix size to be 288. 2018-01-17 01:39:05 +00:00

README 

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.