From: Dmitry Stogov <dmitry@php.net>
Date: Wed, 18 Apr 2007 14:23:35 +0000 (+0000)
Subject: Fixed crash on win32 in case of negative size
X-Git-Tag: RELEASE_1_2_0~282
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=2918cda4942d58cbecc65910ab0f6f5712d72753;p=php

Fixed crash on win32 in case of negative size
---

diff --git a/main/streams/plain_wrapper.c b/main/streams/plain_wrapper.c
index 420f8a63c7..11e05a4672 100644
--- a/main/streams/plain_wrapper.c
+++ b/main/streams/plain_wrapper.c
@@ -777,8 +777,13 @@ static int php_stdiop_set_option(php_stream *stream, int option, int value, void
 				case PHP_STREAM_TRUNCATE_SUPPORTED:
 					return fd == -1 ? PHP_STREAM_OPTION_RETURN_ERR : PHP_STREAM_OPTION_RETURN_OK;
 
-				case PHP_STREAM_TRUNCATE_SET_SIZE:
-					return ftruncate(fd, *(ptrdiff_t*)ptrparam) == 0 ? PHP_STREAM_OPTION_RETURN_OK : PHP_STREAM_OPTION_RETURN_ERR;
+				case PHP_STREAM_TRUNCATE_SET_SIZE: {
+					ptrdiff_t new_size = *(ptrdiff_t*)ptrparam;
+					if (new_size < 0) {
+						return PHP_STREAM_OPTION_RETURN_ERR;
+					}
+					return ftruncate(fd, new_size) == 0 ? PHP_STREAM_OPTION_RETURN_OK : PHP_STREAM_OPTION_RETURN_ERR;
+				}
 			}
 			
 		default: