# HG changeset patch
# User Paul Eggert <eggert@cs.ucla.edu>
# Date 1381730922 25200
# Node ID addcd3785ab36111d0fa2aa6cb1be43ab2a9510b
# Parent  871c8ea4f18cfcab2e8123e3c0c43760e943ecfc
mgetgroups: remove dependency on realloc-gnu

The dependency violates the comment in realloc-gnu, which
says that tests can't depend on realloc-gnu; some tests depend
on mgetgroups, so mgetgroups can't depend on realloc-gnu.
Problem reported by Daniel Richard G. in
<http://lists.gnu.org/archive/html/bug-gnulib/2013-10/msg00056.html>.
* lib/mgetgroups.c (mgetgroups): Don't call realloc (NULL, 0).
* modules/mgetgroups (Depends-on): Depend on realloc-posix,
not realloc-gnu.

diff -r 871c8ea4f18c -r addcd3785ab3 ChangeLog
--- a/ChangeLog	Sat Oct 12 11:50:15 2013 -0700
+++ b/ChangeLog	Sun Oct 13 23:08:42 2013 -0700
@@ -1,3 +1,15 @@
+2013-10-13  Paul Eggert  <eggert@cs.ucla.edu>
+
+	mgetgroups: remove dependency on realloc-gnu
+	The dependency violates the comment in realloc-gnu, which
+	says that tests can't depend on realloc-gnu; some tests depend
+	on mgetgroups, so mgetgroups can't depend on realloc-gnu.
+	Problem reported by Daniel Richard G. in
+	<http://lists.gnu.org/archive/html/bug-gnulib/2013-10/msg00056.html>.
+	* lib/mgetgroups.c (mgetgroups): Don't call realloc (NULL, 0).
+	* modules/mgetgroups (Depends-on): Depend on realloc-posix,
+	not realloc-gnu.
+
 2013-10-12  Paul Eggert  <eggert@cs.ucla.edu>
 
 	regex-tests: port to HP-UX 11.11
diff -r 871c8ea4f18c -r addcd3785ab3 lib/mgetgroups.c
--- a/lib/mgetgroups.c	Sat Oct 12 11:50:15 2013 -0700
+++ b/lib/mgetgroups.c	Sun Oct 13 23:08:42 2013 -0700
@@ -133,7 +133,7 @@
       return -1;
     }
 
-  if (!username && gid != (gid_t) -1)
+  if (max_n_groups == 0 || (!username && gid != (gid_t) -1))
     max_n_groups++;
   g = realloc_groupbuf (NULL, max_n_groups);
   if (g == NULL)
diff -r 871c8ea4f18c -r addcd3785ab3 modules/mgetgroups
--- a/modules/mgetgroups	Sat Oct 12 11:50:15 2013 -0700
+++ b/modules/mgetgroups	Sun Oct 13 23:08:42 2013 -0700
@@ -9,7 +9,7 @@
 Depends-on:
 getgroups
 getugroups
-realloc-gnu
+realloc-posix
 xalloc-oversized
 
 configure.ac: