port
8d946b9c3f6ea42dd5232c0529be4d47798b06aa (r27106).
original commit message:
[es6] Throw TypeError for computed static prototype property name
The prototype of a class constructor function is read only. When we set
computed property names we were ignoring this and we were overriding the
property.
Since the prototype is the only possible own read only property on the
constructor function object we special case this so we do not have to
check this for every property in the class literal.
BUG=
Review URL: https://codereview.chromium.org/
1028983002
Cr-Commit-Position: refs/heads/master@{#27356}
__ push(Operand(esp, 0)); // prototype
}
EmitPropertyKey(property, lit->GetIdForProperty(i));
+
+ // The static prototype property is read only. We handle the non computed
+ // property name case in the parser. Since this is the only case where we
+ // need to check for an own read only property we special case this so we do
+ // not need to do this for every property.
+ if (property->is_static() && property->is_computed_name()) {
+ __ CallRuntime(Runtime::kThrowIfStaticPrototype, 1);
+ __ push(eax);
+ }
+
VisitForStackValue(value);
EmitSetHomeObjectIfNeeded(value, 2);