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- MFB: #39082, image* segfaults when used with only one argument

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(introduced in 5.2+, no news entry)
This commit is contained in:
Pierre Joye 2006-10-08 17:42:55 +00:00
parent 527af42bd4
commit 7ecbbfc206
2 changed files with 22 additions and 3 deletions
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7
ext/gd/gd_ctx.c
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@ -74,7 +74,9 @@ static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type,
ZEND_FETCH_RESOURCE(im, gdImagePtr, imgind, -1, "Image", phpi_get_le_gd());
if (argc > 1) {
convert_to_string_ex(file);
if (argc >= 2 && Z_TYPE_PP(file) != IS_NULL) {
convert_to_string_ex(file);
}
fn = Z_STRVAL_PP(file);
if (argc >= 3) {
convert_to_long_ex(quality);
@ -86,8 +88,7 @@ static void _php_image_output_ctx(INTERNAL_FUNCTION_PARAMETERS, int image_type,
}
}
if ((argc == 2) || (argc > 2 && Z_STRLEN_PP(file))) {
if (argc > 1 && (Z_TYPE_PP(file) != IS_NULL && ((argc == 2) || (argc > 2 && Z_STRLEN_PP(file))))) {
PHP_GD_CHECK_OPEN_BASEDIR(fn, "Invalid filename");
fp = VCWD_FOPEN(fn, "wb");

18
ext/gd/tests/bug39082.phpt Normal file
View File

@ -0,0 +1,18 @@
--TEST--
Bug #39082 (Output image to stdout segfaults).
--SKIPIF--
<?php
if (!extension_loaded('gd')) {
die("skip gd extension not available\n");
}
if (!GD_BUNDLED) {
die('skip external GD libraries may fail');
}
?>
--FILE--
<?php
$im = imagecreatetruecolor(1,1);
imagegif($im);
?>
--EXPECTF--
GIF87a%s