X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=m4%2Fregex.m4;h=3ba6166a2542f9ae2e51d3dff796a94cc9734284;hb=6ae064ff870571ee82f7d0cca2bb5d522e8e5dfa;hp=a31ef2c0708b3e2fc4dcb49a9ce839f0c2a2b959;hpb=b081927a0415be99df7e48128e1cd42f6657510e;p=gnulib.git

diff --git a/m4/regex.m4 b/m4/regex.m4
index a31ef2c07..3ba6166a2 100644
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -1,4 +1,4 @@
-#serial 14
+#serial 15
 
 dnl Initially derived from code in GNU grep.
 dnl Mostly written by Jim Meyering.
@@ -60,6 +60,16 @@ AC_DEFUN([jm_INCLUDED_REGEX],
 	    if (re_match (&regex, "an", 2, 0, &regs) != 2)
 	      exit (1);
 
+	    memset (&regex, 0, sizeof (regex));
+	    s = re_compile_pattern ("x", 1, &regex);
+	    if (s)
+	      exit (1);
+
+	    /* The version of regex.c in e.g. GNU libc-2.2.93 didn't
+	       work with a negative RANGE argument.  */
+	    if (re_search (&regex, "wxy", 3, 2, -2, &regs) != 1)
+	      exit (1);
+
 	    exit (0);
 	  }
 	],