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Fix crash when enumerating properties of global object (#36491)

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These changes make our implementation of the enumeration hook for
globals [match
Gecko's](https://searchfox.org/mozilla-central/rev/1f65969e57c757146e3e548614b49d3a4168eeb8/dom/base/nsGlobalWindowInner.cpp#3297),
fixing an assertion failure that occurred in the previous
implementation.

Our enumeration hook is supposed to fill a vector with names of
properties on the global object without modifying the global in any way;
instead we were defining all of the missing webidl interfaces. We now do
much less work and crash less.

Testing: New crashtest based on manual testcase.
Fixes: #34686

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2025-04-16 23:32:53 -04:00 • committed by GitHub
parent a1b9949f75
commit 30390f8c5e
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9 changed files with 98 additions and 34 deletions
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5
components/script/dom/bindings/utils.rs
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@ -13,7 +13,7 @@ use js::jsapi::{
CallArgs, DOMCallbacks, HandleObject as RawHandleObject, JS_FreezeObject, JSContext, JSObject,
};
use js::rust::{HandleObject, MutableHandleValue, get_object_class, is_dom_class};
use script_bindings::interfaces::DomHelpers;
use script_bindings::interfaces::{DomHelpers, Interface};
use script_bindings::settings_stack::StackEntry;
use crate::DomTypes;
@ -153,8 +153,7 @@ impl DomHelpers<crate::DomTypeHolder> for crate::DomTypeHolder {
unsafe { is_platform_object_same_origin(cx, obj) }
}
fn interface_map() -> &'static phf::Map<&'static [u8], for<'a> fn(SafeJSContext, HandleObject)>
{
fn interface_map() -> &'static phf::Map<&'static [u8], Interface> {
&InterfaceObjectMap::MAP
}