Bug #73337 [NEW]: try/catch not working with two exceptions inside a same operation

From: bwoebi Operating system: Irrelevant PHP version: 7.1.0RC3 Package: Scripting Engine problem Bug Type: Bug Bug description:try/catch not working with two exceptions inside a same operation Description: ------------ If two exceptions happen to be thrown inside a same opcode (the last one of both *must* be thrown from within a separate function, e.g. an userland destructor). The bug is in zend_throw_exception_internal(). We do not overwrite EG(opline_before_exception) in case the current opcode is ZEND_HANDLE_EXCEPTION. This is problematic in the case we aren't yet at that opcode, but it just got set to it by a previous call to zend_throw_exception_internal(). I.e. in case one exception has been triggered and then another exception is thrown within the same opcode. This leads to throw_op_num (= EG(opline_before_exception) - EX(func)->op_array.opcodes) inside ZEND_HANDLE_EXCEPTION opcode being bogus and catching does not work thus. Test script: --------------- class d { function __destruct() { throw new Error; } } try { new d + new d; } catch (Error $e) { print "Exception properly caught"; } Expected result: ---------------- Exception properly caught Actual result: -------------- Fatal error: Uncaught Error in Command line code:1 Stack trace: #0 Command line code(1): d->__destruct() #1 {main} Next Error in Command line code:1 Stack trace: #0 Command line code(1): d->__destruct() #1 {main} thrown in Command line code on line 1 -- Edit bug report at https://bugs.php.net/bug.php?id=73337&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73337&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73337&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73337&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73337&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73337&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73337&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73337&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73337&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73337&r=support Expected behavior: https://bugs.php.net/fix.php?id=73337&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73337&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73337&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73337&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73337&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73337&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73337&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73337&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73337&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73337&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73337&r=mysqlcfg