403352 - "ASSERTION: Ended word in the middle of a cluster" with huge text size, rlm, combining character

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[Jesse Ruderman]

Attachment: testcase

Loading the testcase triggers:

###!!! ASSERTION: Ended word in the middle of a cluster...: 'end == aSource->GetLength() || aSource->IsClusterStart(end)', file /Users/jruderman/trunk/mozilla/gfx/thebes/src/gfxFont.cpp, line 1852

###!!! ASSERTION: Started word in the middle of a cluster...: 'aSource->IsClusterStart(start)', file /Users/jruderman/trunk/mozilla/gfx/thebes/src/gfxFont.cpp, line 1850

Comment 1

[Boris Zbarsky [:bzbarsky]]

I see this bazillions of times when loading the www.163.com page from our talos pageset as UTF-8.

Comment 2

[Jesse Ruderman]

These have been downgraded to warnings.

Comment 3

[Jesse Ruderman]

These assertions were downgraded to warnings in:

changeset:   446f2b8d061b
user:        Jonathan Kew
date:        Sat Jan 30 13:16:07 2010 +0000
summary:     Bug 426978: issue warning rather than assertion for font change within a character cluster. r=roc

Comment 4

[Ryan VanderMeulen [:RyanVM]]

No warnings or asserts when loading this testcase in a debug build on Win10, OSX 10.13, or Ubuntu 17.10.

Comment 5

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/mozilla-inbound/rev/31c8f6ff9b5e
Add crashtest. r=me

Comment 6

[Sebastian Hengst [:aryx] (needinfo me if it's about an intermittent or backout)]

https://hg.mozilla.org/mozilla-central/rev/31c8f6ff9b5e