glibc and getgrouplist

[Roland Illig <roland illig gmx de>]

and, in src/utilunix.c, write

#if defined(HAVE_GETGROUPLIST) && !defined(HAVE_GLIBC_2_3_2)
...
#endif

Roland

Index: configure.ac
===================================================================
RCS file: /cvsroot/mc/mc/configure.ac,v
retrieving revision 1.30
diff -u -p -r1.30 configure.ac
--- configure.ac	10 Jul 2005 10:45:28 -0000	1.30
+++ configure.ac	20 Jul 2005 19:06:02 -0000
@@ -179,6 +179,25 @@ AC_CHECK_FUNCS([atoll cfgetospeed getsid
 		putenv setreuid setuid statfs strerror strftime \
 		sysconf tcgetattr tcsetattr truncate getgrouplist])
 
+dnl The GNU libc, version 2.3.2 has a buffer overflow in the getgrouplist(3)
+dnl function, so we cannot use that function.
+AC_MSG_CHECKING([for glibc version])
+AC_LINK_IFELSE([
+#include <gnu/libc-version.h>
+#include <stdio.h>
+int main(void) {
+    return puts(gnu_get_libc_version());
+}
+], [
+mc_glibc_version=`./conftest$ac_exeext`
+if test x"${mc_glibc_version}" = x"2.3.2"; then
+	AC_DEFINE([HAVE_GLIBC_2_3_2], 1, [Define this if you have glibc-2.3.2])
+fi
+AC_MSG_RESULT([${mc_glibc_version}])
+], [
+AC_MSG_RESULT([none])
+])
+
 dnl S-Lang needs all four functions to be defined to use POSIX signal API
 AC_CHECK_FUNCS([sigaction sigemptyset sigprocmask sigaddset], , [slang_signals=no])
 if test x$slang_signals != xno; then