Hi,
On OSF/1 with gcc and CPPFLAGS="-Wall", I'm seeing this warning in config.log:
configure:22364: checking whether strerror_r returns char *
configure:22416: gcc -std=gnu99 -o conftest -g -O2 -Wall conftest.c >&5
conftest.c: In function 'main':
conftest.c:174: warning: implicit declaration of function 'isalpha'
configure:22416: $? = 0
Here's a proposed fix. All systems I know of have <ctype.h>.
2011-06-05 Bruno Haible <br...@clisp.org>
AC_FUNC_STRERROR_R: Avoid gcc warning.
* lib/autoconf/functions.m4 (AC_FUNC_STRERROR_R): Include <ctype.h>
before using isalpha().
--- lib/autoconf/functions.m4.orig Sun Jun 5 14:44:00 2011
+++ lib/autoconf/functions.m4 Sun Jun 5 14:43:20 2011
@@ -1649,6 +1649,7 @@
# has a strerror_r that returns `int'.
# This test should segfault on the DEC system.
AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
+ #include <ctype.h>
extern char *strerror_r ();],
[[char buf[100];
char x = *strerror_r (0, buf, sizeof buf);
--
In memoriam Eduard Lederer <http://de.wikipedia.org/wiki/Eduard_Lederer>
