X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fmemchr.m4;h=1194bac2e81dbadeb030ed946d00f2304bd000c0;hb=8a0efd04dc9583c96b4a0d3c311ff216e07dcdcd;hp=bcfe869c505892f391a21ee39a3358dcbeec140d;hpb=7cf183c33ef0c792b5c93dbb4ac5b7858ee03986;p=gnulib.git

diff --git a/m4/memchr.m4 b/m4/memchr.m4
index bcfe869c5..1194bac2e 100644
--- a/m4/memchr.m4
+++ b/m4/memchr.m4
@@ -1,10 +1,10 @@
-# memchr.m4 serial 6
+# memchr.m4 serial 7
 dnl Copyright (C) 2002, 2003, 2004, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
-AC_DEFUN([gl_FUNC_MEMCHR],
+AC_DEFUN_ONCE([gl_FUNC_MEMCHR],
 [
   dnl Check for prerequisites for memory fence checks.
   gl_FUNC_MMAP_ANON
@@ -25,6 +25,7 @@ AC_DEFUN([gl_FUNC_MEMCHR],
     #   http://bugzilla.redhat.com/499689
     # memchr should not dereference overestimated length after a match
     #   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=521737
+    #   http://sourceware.org/bugzilla/show_bug.cgi?id=10162
     # Assume that memchr works on platforms that lack mprotect.
     AC_CACHE_CHECK([whether memchr works], [gl_cv_func_memchr_works],
       [AC_RUN_IFELSE([AC_LANG_PROGRAM([[