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changeset 8975:b70a0b36c501

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* m4/regex.m4 (gl_REGEX): Catch a bug with [[:alnum:]_-] reported by Vin Shelton.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 12 Jun 2007 17:44:37 +0000
parents ad4d14c1737e
children ac9d2f4c619c
files ChangeLog m4/regex.m4
diffstat 2 files changed, 17 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2007-06-12  Paul Eggert  <eggert@cs.ucla.edu>
+
+	* m4/regex.m4 (gl_REGEX): Catch a bug with [[:alnum:]_-] reported by
+	Vin Shelton.
+
 2007-06-11  Bruno Haible  <bruno@clisp.org>
 
 	* lib/printf-args.c (PRINTF_FETCHARGS) [ENABLE_UNISTDIO]: Fix NULL
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,4 +1,4 @@
-#serial 46
+#serial 47
 
 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
 # 2006, 2007 Free Software Foundation, Inc.
@@ -137,6 +137,17 @@
 	    if (re_search (&regex, "WXY", 3, 0, 3, &regs) < 0)
 	      return 1;
 
+	    /* Catch a bug reported by Vin Shelton in
+	       http://lists.gnu.org/archive/html/bug-coreutils/2007-06/msg00089.html
+	       */
+	    re_set_syntax (RE_SYNTAX_POSIX_BASIC
+			   & ~RE_CONTEXT_INVALID_DUP
+			   & ~RE_NO_EMPTY_RANGES);
+	    memset (&regex, 0, sizeof regex);
+	    s = re_compile_pattern ("[[:alnum:]_-]\\\\+$", 16, &regex);
+	    if (s)
+	      return 1;
+
 	    /* REG_STARTEND was added to glibc on 2004-01-15.
 	       Reject older versions.  */
 	    if (! REG_STARTEND)