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-rw-r--r--Zend/zend_vm_def.h10
1 files changed, 8 insertions, 2 deletions
diff --git a/Zend/zend_vm_def.h b/Zend/zend_vm_def.h
index ad6dc58ec9..1fc343b5cb 100644
--- a/Zend/zend_vm_def.h
+++ b/Zend/zend_vm_def.h
@@ -5513,8 +5513,14 @@ ZEND_VM_HANDLER(74, ZEND_UNSET_VAR, CONST|TMPVAR|CV, UNUSED|CONST|VAR)
ZVAL_UNDEF(var);
zval_dtor_func_for_ptr(garbage);
} else {
- GC_ZVAL_CHECK_POSSIBLE_ROOT(var);
- ZVAL_UNDEF(var);
+ zval *z = var;
+ ZVAL_DEREF(z);
+ if (Z_COLLECTABLE_P(z) && UNEXPECTED(!Z_GC_INFO_P(z))) {
+ ZVAL_UNDEF(var);
+ gc_possible_root(Z_COUNTED_P(z));
+ } else {
+ ZVAL_UNDEF(var);
+ }
}
} else {
ZVAL_UNDEF(var);