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glibc/stdlib
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Eric Biggers d5b1c5ed8b setenv fix memory leak when setting large, duplicate string (BZ #17658) 
glibc maintains a binary tree of environment strings it malloc()ed
itself.  However, it's possible for it to malloc() a string, then find
that an identical string is already in the tree.  In this case, the
memory is leaked and is not freed if the application later calls
__libc_freeres().  Fix this by freeing 'new_value' when it's unneeded.

Test case:
	#include <stdlib.h>
	#include <string.h>

	int main()
	{
		char *p = calloc(100000, 1);
		memset(p, 'A', 99999);
		setenv("TESTVAR", p, 1);
		setenv("TESTVAR", p, 1);
		free(p);
	}

Leak that was reported by valgrind:
	100,008 bytes in 1 blocks are definitely lost in loss record 1 of 1
	   at 0x4C29F90: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
	   by 0x4E6B3D4: __add_to_environ (setenv.c:176)
	   by 0x4C31B8F: setenv (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
	   by 0x400642: main (in /mnt/tmpfs/a.out)
2015-01-07 12:10:52 +05:30
..
bits Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sys Update. 2002-07-20 01:14:41 +00:00
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add_n.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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alloca.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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atoll.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
bsearch.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
bug-fmtmsg1.c Fix locking problem in fmtmsg 2012-01-16 09:03:20 -05:00
bug-getcontext.c Fix bug-getcontext test 2012-07-16 18:46:40 +02:00
bug-strtod2.c [BZ #1230] 2005-09-28 06:09:24 +00:00
bug-strtod.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
canonicalize.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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cxa_thread_atexit_impl.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
dbl2mpn.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Depend [BZ #1230] 2005-09-28 06:09:24 +00:00
div.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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getcontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
getenv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
getsubopt.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
gmp-impl.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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grouping.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
grouping.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
groupingwc.c Update. 2003-06-11 23:22:36 +00:00
inlines.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
isomac.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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ldbl2mpn.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
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lshift.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
makecontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
Makefile Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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mpn2ldbl.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
mrand48_r.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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old_atexit.c Update. 2004-03-10 09:29:17 +00:00
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putenv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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random.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
rpmatch.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
rshift.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
secure-getenv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
seed48_r.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
seed48.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
setcontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
setenv.c setenv fix memory leak when setting large, duplicate string (BZ #17658) 2015-01-07 12:10:52 +05:30
srand48_r.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
srand48.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
stdlib.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
strfmon_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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strtof.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
strtoimax.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
strtol_l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
strtol.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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strtoull.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
strtoumax.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
sub_n.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
submul_1.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
swapcontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
system.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tens_in_limb.c * stdlib/Makefile (aux): Add tens_in_limb. 2008-03-08 04:18:31 +00:00
test-a64l.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
test-canon2.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
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testdiv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
testdiv.input
testmb2.c Update. 2004-02-23 23:30:12 +00:00
testmb.c
testrand.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
testsort.c Update. 2000-12-05 08:17:58 +00:00
tst-atof1.c * stdlib/strtod_l.c (____STRTOF_INTERNAL): Parse thousand 2006-12-11 21:43:56 +00:00
tst-atof2.c [BZ #3673] 2006-12-10 01:11:45 +00:00
tst-bsearch.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-environ.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-fmtmsg.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-fmtmsg.sh Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-limits.c Fix a couple of -Wundef warnings. 2014-12-29 23:14:38 -05:00
tst-makecontext2.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-makecontext3.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-makecontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-putenv.c Update. 2005-01-04 07:48:13 +00:00
tst-putenvmod.c Update. 2005-01-04 07:48:13 +00:00
tst-qsort2.c stdlib/tst-qsort2.c: Fix off-by-one argc interpretation error 2014-06-20 21:29:33 +01:00
tst-qsort.c Update. 2003-09-17 18:23:49 +00:00
tst-rand48-2.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-rand48.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-random2.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-random.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-secure-getenv.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-setcontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-strtod2.c * stdlib/tst-strtod2.c (do_test): Use %tu in fmt string for ptrdiff_t 2007-08-01 03:44:35 +00:00
tst-strtod3.c * stdlib/strtod_l.c (____STRTOF_INTERNAL): Parse thousand 2006-12-11 21:43:56 +00:00
tst-strtod4.c Include errno.h. Change main() to do_test(). Define TEST_FUNCTION. Include test-skeleton.c. (do_test): Check errno and exit(0) if ENOSYS. 2007-01-11 21:51:00 +00:00
tst-strtod5.c * stdlib/strtod_l.c (____STRTOF_INTERNAL): Properly handle -0. 2007-08-03 16:45:47 +00:00
tst-strtod6.c [BZ #15522] strtod ("nan(N)") returning a sNaN in some cases 2013-08-29 12:22:10 +02:00
tst-strtod-overflow.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-strtod-round-data Fix strtod rounding of half the least subnormal (bug 16151). 2013-11-13 12:59:54 +00:00
tst-strtod-round.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-strtod-underflow.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-strtod.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-strtol.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-strtoll.c Modify several tests to use test-skeleton.c 2014-11-05 15:24:08 +05:30
tst-system.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-tininess.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-tls-atexit-lib.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-tls-atexit.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
tst-unsetenv1.c * stdlib/Makefile (tests): Add tst-unsetenv1. 2008-12-02 02:27:43 +00:00
tst-xpg-basename.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
ucontext.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
udiv_qrnnd.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
Versions C++11 thread_local destructors support 2013-02-18 19:08:21 +05:30
wcstoimax.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
wcstombs.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
wcstoumax.c Moved to csu/errno-loc.c. 2005-12-14 15:06:39 +00:00
wctomb.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
xpg_basename.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00