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1367204 - Generate "[sourceless code]" for class constructors when sourceIsLazy and no source hook is set.

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Gaming4JC 2019-07-13 23:21:45 -04:00 • committed by Roy Tam
commit 379a4231fe
1 changed files with 14 additions and 5 deletions
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19
js/src/jsfun.cpp
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@ -1013,7 +1013,20 @@ js::FunctionToString(JSContext* cx, HandleFunction fun, bool prettyPrint)
if (!out.append(")"))
return nullptr;
}
} else if (fun->isInterpreted() && !fun->isSelfHostedBuiltin()) {
} else if (fun->isInterpreted() &&
(!fun->isSelfHostedBuiltin() ||
fun->infallibleIsDefaultClassConstructor(cx)))
{
// Default class constructors should always haveSource except;
//
// 1. Source has been discarded for the whole compartment.
//
// 2. The source is marked as "lazy", i.e., retrieved on demand, and
// the embedding has not provided a hook to retrieve sources.
MOZ_ASSERT_IF(fun->infallibleIsDefaultClassConstructor(cx),
!cx->runtime()->sourceHook ||
!script->scriptSource()->sourceRetrievable() ||
fun->compartment()->behaviors().discardSource());
if (!AppendPrelude() ||
!out.append("() {\n ") ||
!out.append("[sourceless code]") ||
@ -1022,10 +1035,6 @@ js::FunctionToString(JSContext* cx, HandleFunction fun, bool prettyPrint)
return nullptr;
}
} else {
// Default class constructors should always haveSource unless source
// has been discarded for the whole compartment.
MOZ_ASSERT(!fun->infallibleIsDefaultClassConstructor(cx) ||
fun->compartment()->behaviors().discardSource());
if (!AppendPrelude() ||
!out.append("() {\n "))