From: Stanislav Malyshev <stas@php.net>
Date: Wed, 13 Dec 2000 10:22:36 +0000 (+0000)
Subject: Fix crash when first argument to strtr is empty
X-Git-Tag: php-4.0.5RC1~917
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=16987ca15f7ad975d1db81bdda845d04c97e6a68;p=php

Fix crash when first argument to strtr is empty
---

diff --git a/ext/standard/string.c b/ext/standard/string.c
index 77addf6911..4bdc04ac51 100644
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -1573,6 +1573,11 @@ PHP_FUNCTION(strtr)
 
 	convert_to_string_ex(str);
 
+	/* shortcut for empty string */
+	if(Z_STRLEN_PP(str) == 0) {
+		RETURN_EMPTY_STRING();
+	}
+
 	if (ac == 2) {
 		php_strtr_array(return_value,(*str)->value.str.val,(*str)->value.str.len,HASH_OF(*from));
 	} else {