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* include cleanups: remove unused headers and add feature test macrosSzabolcs Nagy2013-12-121-1/+0
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* fix integer type issue in strverscmpRich Felker2013-02-261-1/+3
| | | | | | | | | lenl-lenr is not a valid expression for a signed int return value from strverscmp, since after implicit conversion from size_t to int this difference could have the wrong sign or might even be zero. using the difference for char values works since they're bounded well within the range of differences representable by int, but it does not work for size_t values.
* implement non-stub strverscmpRich Felker2013-02-261-2/+35
| | | | patch by Isaac Dunham.
* add dummied strverscmp (obnoxious GNU function)Rich Felker2011-09-111-0/+7
programs that use this tend to horribly botch international text support, so it's questionable whether we want to support it even in the long term... for now, it's just a dummy that calls strcmp.