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Fix up Servo_StyleSet_MediumFeaturesChanged for Linux 32-bit ABI

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Bindgen bitfield enums don't work as return values with the Linux 32-bit ABI at
the moment because they wrap the value in a struct.

This causes the Rust side to believe the caller will pass along space for the
struct return value, while C++ believes it's just an integer value.

MozReview-Commit-ID: LY6z7lEKgOp
This commit is contained in:
J. Ryan Stinnett 2017-08-15 17:10:13 -05:00
parent 22e794bbd8
commit 25d2b70252
1 changed files with 5 additions and 2 deletions
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7
ports/geckolib/glue.rs
View file

@ -900,7 +900,7 @@ pub extern "C" fn Servo_StyleSet_AppendStyleSheet(
pub extern "C" fn Servo_StyleSet_MediumFeaturesChanged(
raw_data: RawServoStyleSetBorrowed,
viewport_units_used: *mut bool,
) -> OriginFlags {
) -> u8 {
let global_style_data = &*GLOBAL_STYLE_DATA;
let guard = global_style_data.shared_lock.read();
@ -926,7 +926,10 @@ pub extern "C" fn Servo_StyleSet_MediumFeaturesChanged(
&guard,
);
OriginFlags::from(origins_in_which_rules_changed)
// We'd like to return `OriginFlags` here, but bindgen bitfield enums don't
// work as return values with the Linux 32-bit ABI at the moment because
// they wrap the value in a struct, so for now just unwrap it.
OriginFlags::from(origins_in_which_rules_changed).0
}
#[no_mangle]