Bug #74606 [NEW]: Segfault within try/catch/finally nesting in Generators

From: bwoebi Operating system: Irrelevant PHP version: 7.1Git-2017-05-17 (Git) Package: Reproducible crash Bug Type: Bug Bug description:Segfault within try/catch/finally nesting in Generators Description: ------------ Nesting a try/finally inside a try/catch in a loop within a Generator will cause too many live vars to be cleaned up (i.e. outside its live range). Test script: --------------- function gen() { $array = ["foo"]; $array[] = "bar"; foreach ($array as $item) { try { try { yield; } finally { echo "fin $item\n"; } } catch (\Exception $e) { echo "catch\n"; continue; } } } $g = gen(); $g->throw(new Exception); Expected result: ---------------- fin foo catch fin bar Actual result: -------------- fin foo catch fin bar <segmentation fault> -- Edit bug report at https://bugs.php.net/bug.php?id=74606&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=74606&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=74606&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=74606&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=74606&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=74606&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=74606&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=74606&r=needscript Try newer version: https://bugs.php.net/fix.php?id=74606&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=74606&r=support Expected behavior: https://bugs.php.net/fix.php?id=74606&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=74606&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=74606&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=74606&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=74606&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=74606&r=dst IIS Stability: https://bugs.php.net/fix.php?id=74606&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=74606&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=74606&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=74606&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=74606&r=mysqlcfg