Siddhesh Poyarekar 41389c4049 Fix environment traversal when an envvar value is empty
The condition when the value of an envvar is empty (not just '\0'),
the loop in tunables_init gets stuck infinitely because envp is not
incremented.  Fix that by always incrementing envp in the loop.

Added test case (tst-empty-env.c) verifies the fix when the source is
configured with --enable-hardcoded-path-in-tests, thanks Josh Stone for
providing the test case.  Verified on x86_64.

	* elf/dl-tunables (get_next_env): Always advance envp.
	* stdlib/tst-empty-env.c: New test case.
	* stdlib/Makefile (tests): Use it.
2017-01-20 00:45:09 +05:30
..
2016-10-25 17:05:47 -02:00
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2016-10-25 17:05:47 -02:00