Commit: 3c1888f58468ff0fd7f6c20f3fd7701ed7273647 Author: Dmitry Stogov <dmi...@zend.com> Thu, 29 Nov 2012 13:06:12 +0400 Parents: bc7f2b5f413c14e8b8b28660095ee9f1c7793d06 Branches: PHP-5.5 master
Link: http://git.php.net/?p=php-src.git;a=commitdiff;h=3c1888f58468ff0fd7f6c20f3fd7701ed7273647 Log: Fixed bug #63635 (Segfault in gc_collect_cycles) Bugs: https://bugs.php.net/63635 Changed paths: A Zend/tests/bug63635.phpt M Zend/zend_gc.c Diff: diff --git a/Zend/tests/bug63635.phpt b/Zend/tests/bug63635.phpt new file mode 100644 index 0000000..6f6fc6a --- /dev/null +++ b/Zend/tests/bug63635.phpt @@ -0,0 +1,58 @@ +--TEST-- +Bug #63635 (Segfault in gc_collect_cycles) +--FILE-- +<?php +class Node { + public $parent = NULL; + public $childs = array(); + + function __construct(Node $parent=NULL) { + if ($parent) { + $parent->childs[] = $this; + } + $this->childs[] = $this; + } + + function __destruct() { + $this->childs = NULL; + } +} + +define("MAX", 16); + +for ($n = 0; $n < 20; $n++) { + $top = new Node(); + for ($i=0 ; $i<MAX ; $i++) { + $ci = new Node($top); + for ($j=0 ; $j<MAX ; $j++) { + $cj = new Node($ci); + for ($k=0 ; $k<MAX ; $k++) { + $ck = new Node($cj); + } + } + } + echo "$n\n"; +} +echo "ok\n"; +--EXPECT-- +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +ok diff --git a/Zend/zend_gc.c b/Zend/zend_gc.c index 84a99c1..e877eab 100644 --- a/Zend/zend_gc.c +++ b/Zend/zend_gc.c @@ -644,7 +644,8 @@ tail_call: struct _store_object *obj = &EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(pz)].bucket.obj; if (obj->buffered == (gc_root_buffer*)GC_WHITE) { - GC_SET_BLACK(obj->buffered); + /* PURPLE instead of BLACK to prevent buffering in nested gc calls */ + GC_SET_PURPLE(obj->buffered); if (EXPECTED(EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(pz)].valid && (get_gc = Z_OBJ_HANDLER_P(pz, get_gc)) != NULL)) { @@ -715,7 +716,8 @@ static void zobj_collect_white(zval *pz TSRMLS_DC) struct _store_object *obj = &EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(pz)].bucket.obj; if (obj->buffered == (gc_root_buffer*)GC_WHITE) { - GC_SET_BLACK(obj->buffered); + /* PURPLE instead of BLACK to prevent buffering in nested gc calls */ + GC_SET_PURPLE(obj->buffered); if (EXPECTED(EG(objects_store).object_buckets[Z_OBJ_HANDLE_P(pz)].valid && (get_gc = Z_OBJ_HANDLER_P(pz, get_gc)) != NULL)) { -- PHP CVS Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
