1383491 - stylo: panicked at 'Unstyled element shouldn't be traversed during animation-only traversal'

Status: RESOLVED DUPLICATE of bug 1383001

(Core :: CSS Parsing and Computation, defect)

Description

[Jesse Schwartzentruber (:truber)]

Attachment: testcase.html

The attached testcase causes a panic in m-c rev c22502562670 with stylo enabled by pref.

thread 'StyleThread#1' panicked at 'Unstyled element shouldn't be traversed during animation-only traversal', /home/worker/workspace/build/src/servo/components/style/data.rs:342
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
   1: std::sys_common::backtrace::_print
   2: std::panicking::default_hook::{{closure}}
   3: std::panicking::default_hook
   4: std::panicking::rust_panic_with_hook
   5: std::panicking::begin_panic
   6: style::data::ElementData::restyle_kind_for_animation
   7: style::data::ElementData::restyle_kind
   8: style::traversal::compute_style
   9: style::traversal::recalc_style_at
  10: <style::gecko::traversal::RecalcStyleOnly<'recalc> as style::traversal::DomTraversal<style::gecko::wrapper::GeckoElement<'le>>>::process_preorder
  11: style::parallel::traverse_nodes
  12: style::parallel::traverse_dom::{{closure}}::{{closure}}
  13: rayon_core::scope::Scope::execute_job_closure::{{closure}}
  14: <std::panic::AssertUnwindSafe<F> as core::ops::FnOnce<()>>::call_once
  15: std::panicking::try::do_call
  16: <unknown>
Redirecting call to abort() to mozalloc_abort

Comment 1

[Emilio Cobos Álvarez (:emilio)]

This one is bug 1383001, but a much nicer test-case as usual :-).

Will push it, thanks!