This bug was filed from the Socorro interface and is report bp-54240389-613f-4640-9eae-cc6680170919. ============================================================= Crashing Thread (28) Frame Module Signature Source 0 xul.dll Gecko_AttrHasPrefix layout/style/ServoBindings.cpp:1192 1 xul.dll style::gecko::wrapper::{{impl}}::attr_matches servo/components/style/gecko/wrapper.rs:1782 2 xul.dll selectors::matching::matches_simple_selector<style::gecko::wrapper::GeckoElement, closure> servo/components/selectors/matching.rs:654 3 xul.dll selectors::matching::matches_complex_selector_internal<style::gecko::wrapper::GeckoElement, closure> servo/components/selectors/matching.rs:520 4 xul.dll selectors::matching::matches_complex_selector<style::gecko::wrapper::GeckoElement, closure> servo/components/selectors/matching.rs:501 5 xul.dll style::stylist::{{impl}}::match_revalidation_selectors::{{closure}}<style::gecko::wrapper::GeckoElement, closure> servo/components/style/stylist.rs:1434 6 xul.dll style::traversal::compute_style<style::gecko::wrapper::GeckoElement> servo/components/style/traversal.rs:760 7 xul.dll rayon_core::job::{{impl}}::execute<closure> third_party/rust/rayon-core/src/job.rs:139 8 xul.dll rayon_core::registry::WorkerThread::wait_until<rayon_core::latch::CountLatch> third_party/rust/rayon-core/src/registry.rs:433 9 xul.dll rayon_core::registry::in_worker<closure, ()> third_party/rust/rayon-core/src/registry.rs:588 10 xul.dll rayon_core::job::{{impl}}::execute<rayon_core::latch::LockLatch, closure, ()> third_party/rust/rayon-core/src/job.rs:95 11 xul.dll rayon_core::registry::WorkerThread::wait_until<rayon_core::latch::CountLatch> third_party/rust/rayon-core/src/registry.rs:433 12 xul.dll std::sys_common::backtrace::__rust_begin_short_backtrace<closure, ()> src/libstd/sys_common/backtrace.rs:133 13 xul.dll alloc::boxed::{{impl}}::call_box<(), closure> src/liballoc/boxed.rs:647 14 xul.dll std::sys::imp::thread::{{impl}}::new::thread_start src/libstd/sys/windows/thread.rs:50 15 kernel32.dll BaseThreadInitThunk 16 ntdll.dll RtlUserThreadStart Application Basics: Name: Firefox Version: 57.0a1 Build ID: 20170918220054 Update Channel: nightly User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0 OS: Windows_NT 10.0

Could you share the URL on which this crash occurred?

I can't find any obvious reason for this crash, will investigate more later.

I opened Pootle server for LibreOffice. https://translations.documentfoundation.org/ja/ There is no reproducibility.

On that site there is a rule with a selector: [class^="icon-"]. I can't reproduce, and don't know why we should be generating EXCEPTION_ILLEGAL_INSTRUCTION in there.

There's only ever been that one crash report. Resolving WORKSFORME.

-> verified