If the stored symbol is custom (non-global), it is allocated on the
heap, and may not be visited by anyone else, so we must register it in
order to keep it alive.
This was previously indirectly forcing Heap/Handle.h to include it
instead. This will let us include Handle.h from PropertyKey, which will
allow us to solve a different issue.
This still needs a project-wide cleanup to remove handles captured in
lambdas, which is now longer required.
For now, this will be used in the next commit implementing promise AOs
from Web IDL, which make heavy use of deferred callbacks.
JS::Value stores 48 bit pointers to separately allocated objects in its
payload. On x86-64, canonical addresses have their top 16 bits set to
the same value as bit 47, effectively meaning that the value has to be
sign-extended to get the pointer. AArch64, however, expects the topmost
bits to be all zeros.
This commit gates sign extension behind `#if ARCH(X86_64)`, and adds an
`#error` for unsupported architectures, so that we do not forget to
think about pointer handling when porting to a new architecture.
Fixes#15290FixesSerenityOS/ladybird#56
This remained undetected for a long time as HeaderCheck is disabled by
default. This commit makes the following file compile again:
// file: compile_me.cpp
#include <LibJS/Runtime/StringPrototype.h>
// That's it, this was enough to cause a compilation error.
Likewise for most other files touched by this commit.
In a subclass of Cell, we cannot use Cell::vm() before the base Cell
object itself is constructed. Use the Realm's VM instead.
This was caught by UBSAN with vptr sanitation enabled.
IsArray returns true if the object is an Array *or* if it is a
ProxyObject whose target is an Array. Therefore, we cannot downcast to
an Array based on IsArray.
Luckily, we don't actually need an Array here; SerializeJSONArray only
needs an Object.
This was caught by UBSAN with vptr sanitation enabled.
Instead of calling Core::EventLoop directly, LibJS now has a virtual
function on VM::CustomData for customizing this behavior.
We use this in LibWeb to plumb the spin request through to the
PlatformEventPlugin.
This is generated by GenerateLocaleData, which will soon be in the
Locale namespace. Move it out of CurrencyCode.h, as that will continue
to live in the Unicode namespace.
Before this we attempted to hack around this by only overriding
has_binding. However this did not cover all cases, for example when
assigning to variables before their declaration it didn't throw.
By using the new find_binding_and_index virtual method we can just
pretend the indirect bindings are real.
Since indirect binding do come from a normal environment we need to
ensure you cannot modify the binding and that properties like mutable
are false as expected by the spec for such an indirect binding.
