bug #30350 [VarDumper] Keep a ref to objects to ensure their handle cannot be reused while cloning (nicolas-grekas)

This PR was merged into the 3.4 branch.

Discussion
----------

[VarDumper] Keep a ref to objects to ensure their handle cannot be reused while cloning

| Q             | A
| ------------- | ---
| Branch?       | 3.4
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Fixes the root issue that led to https://github.com/symfony/symfony/pull/30311#issuecomment-466457434

Commits
-------

29a0683107 [VarDumper] Keep a ref to objects to ensure their handle cannot be reused while cloning
This commit is contained in:
Fabien Potencier 2019-02-23 11:36:56 +01:00
commit 83fec23d61
1 changed files with 2 additions and 0 deletions

View File

@ -33,6 +33,7 @@ class VarCloner extends AbstractCloner
$indexedArrays = []; // Map of queue indexes that hold numerically indexed arrays
$hardRefs = []; // Map of original zval hashes to stub objects
$objRefs = []; // Map of original object handles to their stub object counterpart
$objects = []; // Keep a ref to objects to ensure their handle cannot be reused while cloning
$resRefs = []; // Map of original resource handles to their stub object counterpart
$values = []; // Map of stub objects' hashes to original values
$maxItems = $this->maxItems;
@ -200,6 +201,7 @@ class VarCloner extends AbstractCloner
}
if (empty($objRefs[$h])) {
$objRefs[$h] = $stub;
$objects[] = $v;
} else {
$stub = $objRefs[$h];
++$stub->refCount;