+2012-06-24 Bruno Haible <bruno@clisp.org>
+
+ ptsname_r: Fix test failures on IRIX, Solaris.
+ * m4/ptsname_r.m4 (gl_PREREQ_PTSNAME_R): Test whether isatty sets
+ errno when it fails. Define ISATTY_FAILS_WITHOUT_SETTING_ERRNO
+ accordingly.
+ * lib/ptsname_r.c: Include <fcntl.h>.
+ (__ptsname_r): When isatty returned false, then on IRIX, Solaris
+ set errno if fd is invalid.
+ * tests/test-isatty.c (main): Update comments.
+
+2012-06-24 Bruno Haible <bruno@clisp.org>
+
+ ptsname test: Extend test.
+ * tests/test-ptsname.c: Include <errno.h>.
+ (main): Test behaviour with invalid file descriptor.
+
2012-06-23 Paul Eggert <eggert@cs.ucla.edu>
time: fix obsolete comment