Bug #80083 [NEW]: Optimizer pass 6 removes variables used for data binding

From: calvin at cmpct dot info Operating system: IBM i 7.2 PHP version: 7.4.10 Package: opcache Bug Type: Bug Bug description:Optimizer pass 6 removes variables used for data binding Description: ------------ I'm not sure if this is an ibm_db2 module bug or an opcache bug, but I figured I'd report here first. Script, debug output at different optimization levels, and a diff between them available in this gist (let me know if anything else is needed for repro and I can add to it): https://gist.github.com/NattyNarwhal/09679e177b11de22aeceaaffdc62012b The summary is when optimizer pass 6 (DFA) runs through the program, it elides the variables used for a data bound stored procedure call using the ibm_db2 extension, resulting in failure. Masking the bit for pass 6 out (that is, setting optimization level 0x7FFEBFFF to 0x7FFEBFDF) is enough to mitigate the failure. Expected result: ---------------- Résultat : bar (or whatever the stored procedure used sets) Actual result: -------------- PHP Warning: db2_execute(): Value Not Bound in /home/calvin/test/gautier.php on line 31 PHP Warning: db2_execute(): Binding Error 3 in /home/calvin/test/gautier.php on line 31 Résultat : -- Edit bug report at https://bugs.php.net/bug.php?id=80083&edit=1 -- Fix committed: https://bugs.php.net/fix.php?id=80083&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=80083&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=80083&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=80083&r=needscript Try newer version: https://bugs.php.net/fix.php?id=80083&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=80083&r=support Expected behavior: https://bugs.php.net/fix.php?id=80083&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=80083&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=80083&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=80083&r=globals PHP version support discontinued: https://bugs.php.net/fix.php?id=80083&r=phptooold Daylight Savings: https://bugs.php.net/fix.php?id=80083&r=dst IIS Stability: https://bugs.php.net/fix.php?id=80083&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=80083&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=80083&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=80083&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=80083&r=mysqlcfg