Status: Accepted
Owner: [email protected]
CC: [email protected]
Labels: Type-Bug Priority-Medium
New issue 3286 by [email protected]: User defined constructor in Promise
causes crash.
http://code.google.com/p/v8/issues/detail?id=3286
// Flags: --harmony-promises --expose-debug-as debug
var p_parent = new Promise(function(resolve, reject) {
resolve();
});
function p_constructor(fun) { };
p_constructor.prototype = p_parent;
var p = new p_constructor();
p.constructor = p_constructor;
var q = p.chain(
function() {
throw new Error("caught");
});
#
# Fatal error in ../src/handles.h, line 70
# CHECK(location_ != __null) failed
#
==== C stack trace ===============================
1: V8_Fatal
2: v8::internal::MaybeHandle<v8::internal::Object>::Assert()
3: v8::internal::Execution::RunMicrotasks(v8::internal::Isolate*)
4: v8::internal::V8::FireCallCompletedCallback(v8::internal::Isolate*)
5: v8::Script::Run()
6: v8::Shell::ExecuteString(v8::Isolate*, v8::Handle<v8::String>,
v8::Handle<v8::Value>, bool, bool)
7: v8::SourceGroup::Execute(v8::Isolate*)
8: v8::Shell::RunMain(v8::Isolate*, int, char**)
9: v8::Shell::Main(int, char**)
10: main
11: __libc_start_main
12: ??
From what I can tell we are throwing an uncaught exception when running a
microtask, and that's unexpected.
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