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LibJS: Make FunctionObject's m_home_object an Object*, not Value

As the name implies (and the spec confirms), this is only ever going to
be an object or "nothing", or "undefined" in the spec. By taking this
literally and updating a check to check for `is_undefined()`, we
introduced a bug - the value was still initialized as an empty value.
Instead, use a pointer to an Object - either we have one, or we don't.

Fixes #8448.
This commit is contained in:
Linus Groh 2021-07-05 12:57:17 +01:00
parent 83f3f396ad
commit fe9dc47320
2 changed files with 6 additions and 6 deletions

View file

@ -33,9 +33,9 @@ Value FunctionEnvironment::get_super_base() const
{
VERIFY(m_function_object);
auto home_object = m_function_object->home_object();
if (home_object.is_undefined())
if (!home_object)
return js_undefined();
return home_object.as_object().internal_get_prototype_of();
return home_object->internal_get_prototype_of();
}
// 9.1.1.3.2 HasThisBinding ( ), https://tc39.es/ecma262/#sec-function-environment-records-hasthisbinding
@ -51,7 +51,7 @@ bool FunctionEnvironment::has_super_binding() const
{
if (this_binding_status() == ThisBindingStatus::Lexical)
return false;
if (function_object().home_object().is_undefined())
if (!function_object().home_object())
return false;
return true;
}