Commit 2f0357585d836b7349192ea4276b78adfd551cbc
2011-05-21T10:08:28
strerror_r: avoid clobbering strerror on cygwin Avoid cygwin strerror_r, since it clobbers strerror buffer through cygwin 1.7.9. __xpg_strerror_r is okay, but if a program is compiled on cygwin 1.7.8 or earlier, it is not available. * lib/strerror_r.c (strerror_r): Don't use cygwin's strerror_r; fall back instead to sys_errlist. * modules/strerror (configure.ac): Add witness. * tests/test-strerror_r.c (main): Enhance test. * doc/posix-functions/strerror_r.texi (strerror_r): Document it. * tests/test-perror2.c (main): Free memory before exit. Signed-off-by: Eric Blake <eblake@redhat.com>