1546891 - Crash in [@ CCompiler::EmitIf]

Status: RESOLVED WORKSFORME

(Core :: Graphics: WebRender, defect, P3)

Description

[Calixte Denizet (:calixte)]

This bug is for crash report bp-ca684123-3976-4f82-9316-eab9a0190424.

Top 10 frames of crashing thread:

0 d3dcompiler_47.dll CCompiler::EmitIf 
1 d3dcompiler_47.dll CCompiler::EmitStatement 
2 d3dcompiler_47.dll CCompiler::EmitStatement 
3 d3dcompiler_47.dll CCompiler::EmitStatement 
4 d3dcompiler_47.dll CCompiler::EmitFunction 
5 d3dcompiler_47.dll CCompiler::EmitBaseFunctionCall 
6 d3dcompiler_47.dll CCompiler::EmitCallExpr 
7 d3dcompiler_47.dll CCompiler::EmitExpression 
8 d3dcompiler_47.dll CCompiler::EmitExpression 
9 d3dcompiler_47.dll CCompiler::EmitExpression 

There is 1 crash in nightly 68 with buildid 20190424095359. In analyzing the backtrace, the regression may have been introduced by patch [1] to fix bug 1520948.

[1] https://hg.mozilla.org/mozilla-central/rev?node=167ee7c46b84

Comment 1

[Andrew Osmond [:aosmond] (he/him)]

All the nightly crash reports thus far appear to be from the same user using WebRender, so I'm marking it as such for now.

The release crash reports also came from a single user (probably different from nightly) and doesn't seem to be in our WebRender experiments. Marking 66 as unaffected because we have no reports for that; they all happened in 65 and earlier, but in such low volumes (especially for release) I don't think there will be anything easily actionable.

Comment 2

[Kelsey Gilbert [:jgilbert]]

Weird!

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

Closing because no crashes reported for 12 weeks.