From: Sergey Markelov <sergey@solidstatenetworks.com>
Date: Thu, 5 May 2022 00:22:19 +0000 (-0700)
Subject: urlapi: address (harmless) UndefinedBehavior sanitizer warning
X-Git-Tag: curl-7_83_1~35
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b5b86856a92bc190d813d31914f2bea89a886d94;p=thirdparty%2Fcurl.git

urlapi: address (harmless) UndefinedBehavior sanitizer warning

`while(i--)` causes runtime error: unsigned integer overflow: 0 - 1
cannot be represented in type 'size_t' (aka 'unsigned long')

Closes #8797
---

diff --git a/lib/urlapi.c b/lib/urlapi.c
index 99a0f69282..479596acd1 100644
--- a/lib/urlapi.c
+++ b/lib/urlapi.c
@@ -228,7 +228,7 @@ static void strcpy_url(char *output, const char *url, bool relative)
  */
 bool Curl_is_absolute_url(const char *url, char *buf, size_t buflen)
 {
-  size_t i;
+  int i;
   DEBUGASSERT(!buf || (buflen > MAX_SCHEME_LEN));
   (void)buflen; /* only used in debug-builds */
   if(buf)