Bug #80953 [Opn]: gzencode(): stream error

Edit report at https://bugs.php.net/bug.php?id=80953&edit=1 ID: 80953 Updated by: tessus@php.net Reported by: tessus@php.net Summary: gzencode(): stream error Status: Open Type: Bug Package: Zlib related Operating System: Linux PHP Version: 7.4.16 Block user comment: N Private report: N New Comment: Hmm, you didn't tell me that is was a c function. Just from looking at the name I can't determine that. Anyway, we got the proper output from phpinfo(). I haven't found it in LD_LIBRARY_PATH. I'm running Fedora 20 and haven't updated any yum packages for more than 4 years, because I compile everything myself anyway. And I do know that I haven't installed nor compilled 1.1.3 ever. I really have no idea where this should be coming from. I'll try to replace the config.m4 with the one from 7.3. Let's see if that works. Previous Comments: ------------------------------------------------------------------------ [2021-04-13 21:56:35] cmb@php.net > php > echo zlibVersion(); zlibVersion() is a C function. :) > The output from pkgconfig looks ok: Yes. However, I assume that the old zlib version is somewhere in your LD_LIBRARY_PATH, or so. Sorry, I'm usually working on Windows, so I can't help any further, but I don't think this is a PHP bug. ------------------------------------------------------------------------ [2021-04-13 20:27:34] tessus@php.net Hmmm, still not working, but we got the output from phpinfo anyway. php > echo zlibVersion(); PHP Warning: Uncaught Error: Call to undefined function zlibVersion() in php shell code:1 The output from pkgconfig looks ok: # pkg-config --print-provides zlib zlib = 1.2.8 ------------------------------------------------------------------------ [2021-04-13 16:45:38] cmb@php.net > zlib_version() tells me undefined function in the php shell. Oh indeed, the proper spelling is zlibVersion(), and that function is used to retrieve the linked version[1]. To my knowlege, PHP does not (and never did) bundle zlib, so this old version must be somewhere on your system. I assume that the difference between PHP 7.3 and 7.4 is due to build system changes; 7.4 uses pkg-config to detect zlib[2] while 7.3 manually searched for the lib in the usual places[3]. Anyhow, what does pkg-config --print-provides zlib report? [1] <https://github.com/php/php-src/blob/php-7.4.16/ext/zlib/zlib.c#L1593> [2] <https://github.com/php/php-src/blob/php-7.4.16/ext/zlib/config0.m4> [3] <https://github.com/php/php-src/blob/php-7.3.27/ext/zlib/config0.m4> ------------------------------------------------------------------------ [2021-04-13 15:58:19] tessus@php.net zlib_version() tells me undefined function in the php shell. But: php > echo ZLIB_VERSION; 1.2.8 But then I looked at the phpinfo() output and found something very strange: ZLib Support => enabled Stream Wrapper => compress.zlib:// Stream Filter => zlib.inflate, zlib.deflate Compiled Version => 1.2.8 Linked Version => 1.1.3 My zlib version on the system is 1.2.8. There is nowhere a 1.1.3 in any of my lib directories. And on PHP 7.3 both match and say 1.2.8. I can assure you that there is no 1.1.3 of zlib on my system and I have no idea where this is coming from. ldd for my php 7.4 binary shows: libz.so.1 => /usr/lib64/libz.so.1 (0x00000036d3200000) and ls -la /usr/lib64/libz.so.1 shows: /usr/lib64/libz.so.1 -> libz.so.1.2.8 I just compiled 7.3 again and all works. I compile 7.4 and same problem. It's very puzzling, since I certainly haven't installed libz 1.1.3, nor is it present in any of my lib paths. (Why would I install an older version?) Also, in that case 7.3, would pick it up too. We have a mystery on our hands. The only logical explanation would be that PHP 7.4 bundles 1.1.3 and statically links it. ------------------------------------------------------------------------ [2021-04-13 11:14:39] cmb@php.net > PHP Warning: gzencode(): stream error in t.php on line 3 This is apparently caused by deflateInit2()[1] returning Z_STREAM_ERROR. The zlib manual[2] states: | deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was | not enough memory, Z_STREAM_ERROR if a parameter is invalid (such | as an invalid method), or Z_VERSION_ERROR if the zlib library | version (zlib_version) is incompatible with the version assumed by | the caller (ZLIB_VERSION). Does zlib_version() match ZLIB_VERSION for you? [1] <https://github.com/php/php-src/blob/php-7.4.16/ext/zlib/zlib.c#L346> [2] <https://zlib.net/manual.html> ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=80953 -- Edit this bug report at https://bugs.php.net/bug.php?id=80953&edit=1