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| author | Dmitry Stogov <dmitry@zend.com> | 2012-11-29 12:25:20 +0400 |
|---|---|---|
| committer | Dmitry Stogov <dmitry@zend.com> | 2012-11-29 12:25:20 +0400 |
| commit | 92e2f2938115d2cdae185848d535380fb7694598 (patch) | |
| tree | e5469e90ebce1a4cd299528996112497c47479b6 | |
| parent | bc492007da8c8614545a32560c445ab4e02baed0 (diff) | |
| download | php-git-92e2f2938115d2cdae185848d535380fb7694598.tar.gz | |
Fixed bug #63635 (Segfault in gc_collect_cycles)
| -rw-r--r-- | NEWS | 1 | ||||
| -rw-r--r-- | Zend/tests/bug63635.phpt | 58 | ||||
| -rw-r--r-- | Zend/zend_gc.c | 6 |
3 files changed, 63 insertions, 2 deletions
@@ -3,6 +3,7 @@ PHP NEWS ?? ??? 2012, PHP 5.3.20 - Zend Engine: + . Fixed bug #63635 (Segfault in gc_collect_cycles). (Dmitry) . Fixed bug #63512 (parse_ini_file() with INI_SCANNER_RAW removes quotes from value). (Pierrick) . Fixed bug #63468 (wrong called method as callback with inheritance). diff --git a/Zend/tests/bug63635.phpt b/Zend/tests/bug63635.phpt new file mode 100644 index 0000000000..6f6fc6a44f --- /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 07031f066a..2b27de80c0 100644 --- a/Zend/zend_gc.c +++ b/Zend/zend_gc.c @@ -553,7 +553,8 @@ 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 && Z_OBJ_HANDLER_P(pz, get_properties) != NULL)) { @@ -598,7 +599,8 @@ 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 && Z_OBJ_HANDLER_P(pz, get_properties) != NULL)) { |