Bug #71166 [Opn->Nab]: Wrong output of GC statistics

Edit report at https://bugs.php.net/bug.php?id=71166&edit=1 ID: 71166 Updated by: laruence@php.net Reported by: y dot uchiyama dot 1015 at gmail dot com Summary: Wrong output of GC statistics -Status: Open +Status: Not a bug Type: Bug Package: Scripting Engine problem Operating System: Any PHP Version: 7.0.1 Block user comment: N Private report: N New Comment: Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php in PHP7, we introduced a gc_additional_buffer. so I think >1000 make sense in this case. Previous Comments: ------------------------------------------------------------------------ [2015-12-19 08:54:35] y dot uchiyama dot 1015 at gmail dot com Sorry, but now I'm not certain my patch is right. ------------------------------------------------------------------------ [2015-12-19 08:10:45] y dot uchiyama dot 1015 at gmail dot com Description: ------------ PHP 7 outputs wrong GC stats when compiled with -DGC_BENCH=1, because root_buf_length is not decreased when cyclic garbages are collected on GC. Test script: --------------- ./sapi/cli/php </tmp/example1.php where example1.php is shown at the following http://www.php.net/manual/en/features.gc.performance-considerations.php Expected result: ---------------- Root buffer length/peak should be <= 10000. Actual result: -------------- GC Statistics ------------- Runs: 10 Collected: 99999 Root buffer length: 100001 Root buffer peak: 100006 ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71166&edit=1