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Handle zero-length arguments specially.

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This commit is contained in:
Ulrich Drepper 2002-01-29 03:44:02 +00:00
parent 96f3aa5253
commit 597d127a79
1 changed files with 5 additions and 1 deletions
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6
string/strcoll.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1995,96,97,98,99,2000,2001 Free Software Foundation, Inc.
/* Copyright (C) 1995,96,97,98,99,2000,2001,2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@cygnus.com>, 1995.
@ -137,6 +137,10 @@ STRCOLL (s1, s2, l)
s1len = STRLEN (s1);
s2len = STRLEN (s2);
/* Catch empty strings. */
if (__builtin_expect (s1len == 0, 0) || __builtin_expect (s2len == 0, 0))
return (s1len != 0) - (s2len != 0);
/* We need the elements of the strings as unsigned values since they
are used as indeces. */
us1 = (const USTRING_TYPE *) s1;