Go to file
Philippe Waroquiers 5ca79eae06 Fix leak of auto_obstack objfile_per_bfd_storage->storage_obstack;
commit 23732b1e32
  Author: Pedro Alves <palves@redhat.com>
  Date:   Tue Jun 27 16:22:08 2017 +0100
changed objfile_per_bfd_storage->storage_obstack
from  'struct obstack storage_obstack;'
to    'auto_obstack storage_obstack;'
So the obstack is auto allocated when the  objfile_per_bfd_storage ctor is
manually called by get_objfile_bfd_data).
However, the ctor call was still followed by a manual call to
      obstack_init (&storage->storage_obstack);

This results in a bunch of leaks detected by valgrind, such as:
==24665== 4,064 bytes in 1 blocks are definitely lost in loss record 11,469 of 11,590
==24665==    at 0x4C27BF5: malloc (vg_replace_malloc.c:299)
==24665==    by 0x5437B7: xmalloc (common-utils.c:44)
==24665==    by 0x77CAA7: _obstack_begin_worker (obstack.c:141)
==24665==    by 0x60168F: auto_obstack (gdb_obstack.h:70)
==24665==    by 0x60168F: get_objfile_bfd_data(objfile*, bfd*) (objfiles.h:188)
==24665==    by 0x601DB6: allocate_objfile(bfd*, char const*, enum_flags<objfile_flag>) (objfiles.c:423)
==24665==    by 0x647753: symbol_file_add_with_addrs(bfd*, char const*, enum_flags<symfile_add_flag>, section_addr_info*, enum_flags<objfile_flag>, objfile*) (symfile.c:1158)
==24665==    by 0x647C7B: symbol_file_add_separate(bfd*, char const*, enum_flags<symfile_add_flag>, objfile*) (symfile.c:1252)
==24665==    by 0x4C7D79: elf_symfile_read(objfile*, enum_flags<symfile_add_flag>) (elfread.c:1270)
==24665==    by 0x647CB4: read_symbols(objfile*, enum_flags<symfile_add_flag>) (symfile.c:861)
==24665==    by 0x647809: syms_from_objfile_1 (symfile.c:1062)

-> remove the manual call to obstack_init.
Reg-tested on Debian 8/amd64, tests results are the same before/after the patch.
valgrind still show some leaks, but less.

gdb/ChangeLog
2017-09-05  Philippe Waroquiers  <philippe.waroquiers@skynet.be>

	* objfiles.c (get_objfile_bfd_data): Remove useless obstack_init
	call.
2017-09-05 20:51:23 +02:00
bfd x86-64: Improve GOTPCREL relocation conversion 2017-09-05 11:24:14 -07:00
binutils Fix a buffer overrun when parsing a corrupt MIPS ELF binary. 2017-09-05 12:09:14 +01:00
config
cpu
elfcpp [GOLD] PowerPC tls_get_addr_optimize 2017-08-29 21:29:37 +09:30
etc
gas Missing relocation R_PPC_VLE_ADDR20 and add VLE flag to details in readelf 2017-09-05 08:42:27 +09:30
gdb Fix leak of auto_obstack objfile_per_bfd_storage->storage_obstack; 2017-09-05 20:51:23 +02:00
gold PowerPC TPREL16_HA/LO reloc optimization 2017-08-30 20:43:31 +09:30
gprof Add updated French translations for opcodes and gprof 2017-08-31 14:33:56 +01:00
include Missing relocation R_PPC_VLE_ADDR20 and add VLE flag to details in readelf 2017-09-05 08:42:27 +09:30
intl
ld x86-64: Improve GOTPCREL relocation conversion 2017-09-05 11:24:14 -07:00
libdecnumber
libiberty Import latest fixes to libiberty from GCC 2017-09-01 06:14:39 -07:00
opcodes Add updated French translations for opcodes and gprof 2017-08-31 14:33:56 +01:00
readline
sim Define an error function in the PPC simulator library. 2017-09-04 19:56:00 -07:00
texinfo
zlib
.cvsignore
.gitattributes
.gitignore
ChangeLog
compile
config-ml.in
config.guess
config.rpath
config.sub
configure
configure.ac
COPYING
COPYING3
COPYING3.LIB
COPYING.LIB
COPYING.LIBGLOSS
COPYING.NEWLIB
depcomp
djunpack.bat
install-sh
libtool.m4
lt~obsolete.m4
ltgcc.m4
ltmain.sh
ltoptions.m4
ltsugar.m4
ltversion.m4
MAINTAINERS
Makefile.def
Makefile.in
Makefile.tpl
makefile.vms
missing
mkdep
mkinstalldirs
move-if-change
README
README-maintainer-mode
setup.com
src-release.sh
symlink-tree
ylwrap

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.