86128 2012-05-10 12:29:21 -0700 Error stack should not be read only 2021-04-21 14:18:08 -0700 1 1 1 Unclassified WebKit JavaScriptCore 528+ (Nightly build) Unspecified Unspecified RESOLVED CONFIGURATION CHANGED P2 Normal --- 86442 85057 1 arv webkit-unassigned ashvayka barraclough beidson oliver saam oldest_to_newest 620857 0 arv 2012-05-10 12:29:21 -0700 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. 1545401 1 ashvayka 2019-06-17 14:50:25 -0700 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 } 1752928 2 sam 2021-04-21 14:18:08 -0700 *** Bug 86523 has been marked as a duplicate of this bug. ***