regex: fix off-by-one error in configure test

* m4/regex.m4 (gl_REGEX): Test should return 21, not 20.

diff --git a/ChangeLog b/ChangeLog
index 74dad7e..51346e4 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-01-31  Paul Eggert  <eggert@cs.ucla.edu>
+
+       regex: fix off-by-one error in configure test
+       * m4/regex.m4 (gl_REGEX): Test should return 21, not 20.
+
 2013-01-31  Eric Blake  <eblake@redhat.com>
 
        regex: avoid infinite configure test

diff --git a/m4/regex.m4 b/m4/regex.m4
index 944dfaf..958c663 100644 (file)
--- a/m4/regex.m4
+++ b/m4/regex.m4
@@ -92,7 +92,7 @@ AC_DEFUN([gl_REGEX],
                     result |= 1;
                   else if (re_search (&regex, data, sizeof data - 1,
                                       0, sizeof data - 1, 0)
-                           != 20)
+                           != 21)
                     result |= 1;
                 }