471202 - Warning repeats forever: "WARNING: Scanning overflow inline frames is something we should avoid: '!result.mOverflowFrameToScan'" on testcase from bug 431260

Status: NEW

(Core :: Layout: Text and Fonts, defect)

Description

[Daniel Holbert [:dholbert]]

STR:
  Load 1st testcase on bug 431260 (attachment 318291 [details]) in a debug build

ACTUAL RESULTS:
  * This warning is repeated forever:
WARNING: Scanning overflow inline frames is something we should avoid: '!result.mOverflowFrameToScan', file /mozilla/layout/generic/nsTextFrameThebes.cpp, line 852
(I've just let it sit for a few minutes, and I've gotten 15,000 copies of the warning so far, with no end in sight...)
  * Firefox uses up about 60% of my CPU power continuously

NOTE: This whole time, the browser remains responsive, and the page looks normal (doesn't jiggle or anything).  And if I navigate to a different page, both of the problems (spammed warning & high CPU usage) go away.

Comment 1

[Daniel Holbert [:dholbert]]

Note: I've marked this as blocking bug 455826 simply to track the fact that the warning was added in that bug's fix.

Comment 2

[Mike Vachon]

Attachment: same problem

Thanks from neyspookidpa1979.