Update.

2002-04-04  Ulrich Drepper  <drepper@redhat.com>

	* misc/dirname.c (dirname): Ignore trailing slashes at end of
	non-null result [PR libc/2600].

	* misc/tst-dirname.c: Add more tests.

ChangeLog

@@ -1,3 +1,10 @@
+2002-04-04  Ulrich Drepper  <drepper@redhat.com>
+
+	* misc/dirname.c (dirname): Ignore trailing slashes at end of
+	non-null result [PR libc/2600].
+
+	* misc/tst-dirname.c: Add more tests.
+
 2002-04-03  Ulrich Drepper  <drepper@redhat.com>
 
 	* locale/programs/charmap.c (charmap_read): If the charmap doesn't

misc/dirname.c

@@ -1,5 +1,5 @@
 /* dirname - return directory part of PATH.
-   Copyright (C) 1996, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1996, 2000, 2001, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -66,6 +66,8 @@ dirname (char *path)
 	  else
 	    last_slash = path + 1;
 	}
+      else
+	last_slash = runp;
 
       last_slash[0] = '\0';
     }

misc/tst-dirname.c

@@ -1,5 +1,5 @@
 /* Test program for dirname function a la XPG.
-   Copyright (C) 1996, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1996, 2000, 2001, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -62,5 +62,9 @@ main (void)
   result |= test ("//usr//", "//");
   result |= test ("//", "//");
 
+  /* Other Unix implementations behave like this.  */
+  result |= test ("x///y", "x");
+  result |= test ("x/////y", "x");
+
   return result != 0;
 }