Comment #1 on issue 4140 by m...@bocoup.com: Generator method `prototype`
property incorrectly defined as non-writable
https://code.google.com/p/v8/issues/detail?id=4140
This applies to generator function instances created via other declarative
forms, as well:
$ d8 -e "function* g() {}
print(Object.getOwnPropertyDescriptor(g, 'prototype').writable);"
false
$ d8 -e "print(Object.getOwnPropertyDescriptor(function*()
{}, 'prototype').writable);"
false
$ d8 -e "print(Object.getOwnPropertyDescriptor(function* g()
{}, 'prototype').writable);"
false
## 14.4.12 Runtime Semantics: InstantiateFunctionObject
GeneratorDeclaration : function * BindingIdentifier ( FormalParameters )
{ GeneratorBody }
[...]
5. Perform MakeConstructor(F, true, prototype).
[...]
## 14.4.14 Runtime Semantics: Evaluation
GeneratorExpression : function * ( FormalParameters ) { GeneratorBody }
[...]
5. Perform MakeConstructor(closure, true, prototype).
[...]
GeneratorExpression : function * BindingIdentifier ( FormalParameters ) {
GeneratorBody }
[...]
9. Perform MakeConstructor (closure, true, prototype).
[...]
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