Bug 86128 – Error stack should not be read only

• Status: RESOLVED
• Resolution: CONFIGURATION CHANGED
• Component: JavaScriptCore

[Erik Arvidsson]

Both SpiderMonkey and V8 allows the stack property of error objects to be written to.

try {
  throw new Error;
} catch (ex) {
  ex.stack = 42;
  console.assert(e.stack === 42);
}

JSC fails because it treats stack as a read only property.

[Alexey Shvayka]

This is fixed as of rev. 246497. Property descriptor of "stack":

{
  "value": "global code\\nevaluateWithScopeExtension@[native code]\\n\\n_wrapCall",
  "writable": true, // !
  "enumerable": false,
  "configurable": true
}

[Sam Weinig]

*** Bug 86523 has been marked as a duplicate of this bug. ***