Comment #9 on issue 31439 by o...@chromium.org: certain fonts cause 0-width
renderer controls
http://code.google.com/p/chromium/issues/detail?id=31439
There are some mac fonts that have invalid (i.e. non-positive) values in
the OS/2 table for
avgCharWidth. That's the value used to calculate text control intrinsic
widths. I have a patch up at
https://bugs.webkit.org/show_bug.cgi?id=25566 that will fix this, but I'm
not sure it will be
approved.
In either case, it might be a good idea to improve our handling of
non-positive avgCharWidths.
Currently we just null-check. We should probably check if it's <= 0. See
line 109 of
WebKit/WebCore/platform/graphics/chromium/SimpleFontDataLinux.cpp.
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