[php-src] Issue #13264: fgets() does not return false on error from a zlib.inflate filtered stream with large content and invalid checksum

Issue: https://github.com/php/php-src/issues/13264 Author: n-peugnet ### Description The following code: ```php <?php // Prepare a big enough input so that it is not entirely buffered $stream = fopen('php://memory', 'r+'); $content = ''; for ($i = 0; $i < 10000; $i++) { $content .= "Hello $i\n"; } fwrite($stream, gzcompress($content)); // Mess up the checksum fseek($stream, -1, SEEK_CUR); fwrite($stream, '1'); // Rewind and add the zlib filter rewind($stream); stream_filter_append($stream, 'zlib.inflate', STREAM_FILTER_READ, ['window' => 15]); // Read the filtered stream line by line. while (($line = fgets($stream)) !== false) { $error = error_get_last(); if ($error !== null) { // An error is thrown but fgets didn't return false var_dump(error_get_last()); var_dump($line); } } fclose($stream); ``` Resulted in this output: ``` PHP Notice: fgets(): zlib: data error in /home/nicolas/Source/php/sphinx-inventory-parser/test.php on line 20 PHP Stack trace: PHP 1. {main}() /home/nicolas/Source/php/sphinx-inventory-parser/test.php:0 PHP 2. fgets($stream = resource(5) of type (stream)) /home/nicolas/Source/php/sphinx-inventory-parser/test.php:20 /home/nicolas/Source/php/sphinx-inventory-parser/test.php:24: array(4) { 'type' => int(8) 'message' => string(25) "fgets(): zlib: data error" 'file' => string(57) "/home/nicolas/Source/php/sphinx-inventory-parser/test.php" 'line' => int(20) } /home/nicolas/Source/php/sphinx-inventory-parser/test.php:25: string(7) "Hello 6" ``` But I expected this output instead: ``` PHP Notice: fgets(): zlib: data error in /home/nicolas/Source/php/sphinx-inventory-parser/test.php on line 20 PHP Stack trace: PHP 1. {main}() /home/nicolas/Source/php/sphinx-inventory-parser/test.php:0 PHP 2. fgets($stream = resource(5) of type (stream)) /home/nicolas/Source/php/sphinx-inventory-parser/test.php:20 ``` Also note that by replacing 10000 with a smaller number, say 1000 I get the expected output. ### PHP Version PHP 8.2.12 ### Operating System Debian testing