Bug #75169 [NEW]: BCMath errors/warnings bypass PHP's error handling

From: cmb Operating system: * PHP version: 7.0.23 Package: BC math related Bug Type: Bug Bug description:BCMath errors/warnings bypass PHP's error handling Description: ------------ BCMath reports some errors and warnings (such as "exponent too large in raise") by directly writing to stderr[1], thereby completely bypassing PHP's error handling. [1] <https://github.com/php/php-src/blob/php-7.0.23/ext/bcmath/libbcmath/src/rt.c> Test script: --------------- <?php set_error_handler(function ($errno, $errstr) { var_dump('caught'); }); bcdiv('1', '0'); bcpow('1', '12345678901234567890'); Expected result: ---------------- string(6) "caught" string(6) "caught" Actual result: -------------- string(6) "caught" bc math error: exponent too large in raise -- Edit bug report at https://bugs.php.net/bug.php?id=75169&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=75169&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=75169&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=75169&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=75169&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=75169&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=75169&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=75169&r=needscript Try newer version: https://bugs.php.net/fix.php?id=75169&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=75169&r=support Expected behavior: https://bugs.php.net/fix.php?id=75169&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=75169&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=75169&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=75169&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=75169&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=75169&r=dst IIS Stability: https://bugs.php.net/fix.php?id=75169&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=75169&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=75169&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=75169&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=75169&r=mysqlcfg