Update.

1999-08-15  Ulrich Drepper  <drepper@cygnus.com>

	* wcsmbs/wcsnlen.c: Correct decrement maxlen.

	* wcsmbs/Makefile (tests): Add tst-wcsnlen.
	* wcsmbs/tst-wcsnlen.c: New file.

3 files changed, 54 insertions, 2 deletions

diff --git a/wcsmbs/Makefile b/wcsmbs/Makefile
index f1dc651877..7ca2800c05 100644
--- a/wcsmbs/Makefile
+++ b/wcsmbs/Makefile
@@ -39,7 +39,7 @@ routines := wcscat wcschr wcscmp wcscpy wcscspn wcsdup wcslen wcsncat \
 	    wcscasecmp wcsncase wcscasecmp_l wcsncase_l \
 	    wcsmbsload
 
-tests := tst-wcstof wcsmbs-tst1
+tests := tst-wcstof wcsmbs-tst1 tst-wcsnlen
 
 include ../Rules
 
diff --git a/wcsmbs/tst-wcsnlen.c b/wcsmbs/tst-wcsnlen.c
new file mode 100644
index 0000000000..48d177eaaf
--- /dev/null
+++ b/wcsmbs/tst-wcsnlen.c
@@ -0,0 +1,51 @@
+/* Copyright (C) 1999 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <stdio.h>
+#include <wchar.h>
+
+#define TEST(Str, Max, Exp) \
+  n = wcsnlen (L##Str, Max);						      \
+  if (n != Exp)								      \
+    {									      \
+      result = 1;							      \
+      printf ("wcsnlen (L\"%s\", %d) = %d, not %d\n", Str, Max, n, Exp);      \
+    }
+
+int
+main (void)
+{
+  int result = 0;
+  int n;
+
+  TEST ("0123456789", 0, 0);
+  TEST ("0123456789", 1, 1);
+  TEST ("0123456789", 2, 2);
+  TEST ("0123456789", 3, 3);
+  TEST ("0123456789", 4, 4);
+  TEST ("0123456789", 5, 5);
+  TEST ("0123456789", 6, 6);
+  TEST ("0123456789", 7, 7);
+  TEST ("0123456789", 8, 8);
+  TEST ("0123456789", 9, 9);
+
+  TEST ("01234", 9, 5);
+
+  return result;
+}
diff --git a/wcsmbs/wcsnlen.c b/wcsmbs/wcsnlen.c
index 5264a66d05..0696f40495 100644
--- a/wcsmbs/wcsnlen.c
+++ b/wcsmbs/wcsnlen.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
 
@@ -37,6 +37,7 @@ __wcsnlen (s, maxlen)
       if (s[++len] == L'\0' || --maxlen == 0)
 	return len;
       ++len;
+      --maxlen;
     }
 
   return len;