Bug #79034 [Com]: PHP Fatal error: CPU doesn't support SSE2 in Unknown on line 0

Edit report at https://bugs.php.net/bug.php?id=79034&edit=1 ID: 79034 Comment by: bugreports at gmail dot com Reported by: bugreports at gmail dot com Summary: PHP Fatal error: CPU doesn't support SSE2 in Unknown on line 0 Status: Feedback Type: Bug Package: opcache Operating System: Linux PHP Version: master-Git-2019-12-26 (Git) Block user comment: N Private report: N New Comment: here we go (besdies that someone could review the compiler warnings on Fedora 30 with GCC9 which increased with 7.4 and 8.0: https://pastebin.com/Zjt48kKi) BROKEN: 2 days ago Dmitry Stogov Build call graph before type inference OK: 2 days ago Xinchen Hui Implemented FR #78638 (__PHP_Incomplete_Class should... the results are all sorts of weird behavior with enabled opcache-jit and "CPU doesn't support SSE2 in Unknown" is only one, it goes from random "1885613 Segmentation fault" over strange behavior in acpu where after apcu_delete() a call of apcu_fetch() still receives the record to "TypeError: substr() expects parameter 1 to be string, int given" when foreach() over a apcu stored array which for sure contains only strings and sometimes all of them mixed side note: 2 days ago i added '-fno-semantic-interposition' because of https://fedoraproject.org/wiki/Changes/PythonNoSemanticInterpositionSpeedup and that causes problems too, in fact "Implemented FR #78638 (__PHP_Incomplete_Class should..." had the same behavior and switch to "-fsemantic-interposition" *ssemd* to fix all the troubles - but it didn't really Previous Comments: ------------------------------------------------------------------------ [2019-12-26 14:03:04] bugreports at gmail dot com i'm about to dig it out, what i can say for now is that it breaks JIT comment that two out and all including apcu works fine ;opcache.jit_buffer_size = 50000000 ;opcache.jit = 1235 i first thought the big cleanup commit from today is likely but it's broken before and "substr() expects parameter 1 to be string, int given" in apcu-related code iterating through a array which for sure has string keys as well as that after apcu_delete() values still exists smells like memory corruption ------------------------------------------------------------------------ [2019-12-26 13:16:41] nikic@php.net There haven't been any recent changes to the CPU detection code. Can you please bisect which commit introduced the issue? There were only a handful of commits since Dec 22 and none really look relevant. ------------------------------------------------------------------------ [2019-12-26 12:35:19] bugreports at gmail dot com Description: ------------ some of the last recent changes in MASTER broke CPU detection at runtime PHP Fatal error: CPU doesn't support SSE2 in Unknown on line 0 i doubt that on a IvyBrdige machine :-) this one was pretty fine and the binaries pass everything PHP 8.0.0-dev (cli) (built: Dec 22 2019 12:57:58) also APCu (built within PHP itself by unpack it to the extensions directory) started to behave randomly wrong in some autotest running at build time here in the profile stage of a PGO build and so it's stopped ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79034&edit=1