Elliot Ronaghan d1207f0d37 Check for __builtin_unreachable at configure time ... Add a configure check for __builtin_unreachable instead of basing its availability on the __GNUC__ version. On OS X using gcc (a real gcc, not the bundled version that's just a gcc front-end) leads to a linker assertion: https://github.com/jemalloc/jemalloc/issues/266 It turns out that this is caused by a gcc bug resulting from the use of __builtin_unreachable(): https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57438 To work around this bug, check that __builtin_unreachable() actually works at configure time, and if it doesn't use abort() instead. The check is based on https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57438#c21. With this `make check` passes with a homebrew installed gcc-5 and gcc-6.		2016-09-26 10:44:37 -07:00
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jemalloc	Check for __builtin_unreachable at configure time	2016-09-26 10:44:37 -07:00
msvc_compat	Remove errno overrides.	2016-05-03 10:01:16 -07:00