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From: Ondrej Oprala <ooprala@redhat.com>
Newsgroups: gnu.bash.bug
Subject: bash leaks a pointer
Date: Wed, 15 Jul 2015 10:29:29 +0200
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$ export LC_ALL=en_US.UTF-8
$ valgrind --leak-check=full /bin/bash -c 'exit 0'
#<snip>
==4190== HEAP SUMMARY:
==4190==     in use at exit: 22,269 bytes in 614 blocks
==4190==   total heap usage: 698 allocs, 84 frees, 29,706 bytes allocated
==4190==
==4190== 12 bytes in 1 blocks are definitely lost in loss record 77 of 218
==4190==    at 0x4C28C10: malloc (in 
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==4190==    by 0x18928F: xmalloc (in /usr/bin/bash)
==4190==    by 0x18306A: set_default_locale (in /usr/bin/bash)
==4190==    by 0x1360B0: main (in /usr/bin/bash)
==4190==
#</snip>

set_default_locale leaks a pointer (alloced by savestring()) if LC_ALL 
is non-empty. Currently, I don't
see the "default_locale" var used anywhere in the code base, the only 
ocurrence is in a "#if 0" directive.

Thanks,
  Ondrej