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authorLukas Fleischer <cgit@cryptocrack.de>2011-09-14 11:52:43 +0200
committerLars Hjemli <hjemli@gmail.com>2012-01-03 14:59:36 +0000
commitd96d2c98ebc4c2d3765f5b35c4142e0e828a421b (patch)
tree72e2ed0fd0dd949d400cf4b35f9496571488a2eb /filters
parentshared.c: Remove unused "linux/limits.h" include (diff)
downloadcgit-pink-d96d2c98ebc4c2d3765f5b35c4142e0e828a421b.tar.gz
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shared.c: Only setenv() if value is non-null
Some setenv() implementations (e.g. the one in OpenBSD's stdlib)
segfault if we pass a NULL value. Only set environment variables if the
corresponding settings are defined to avoid this.

Note that this is a minor behaviour change as environment variables were
supposed to be set to an empty string if a setting was undefined. Given
that this feature isn't part of any official release yet, there's no
need to worry about backwards compatibility, really. Change the
documentation accordingly.

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>
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