[OpenJDK 2D-Dev] RFR: 8190280 [macos] Font2DTest demo started failing for Arabic range from JDK 8 u162 b01 on Mac
philip.race at oracle.com
Wed Nov 1 18:09:54 UTC 2017
This is a JDK8 version of the bug
which affected harfbuzz in JDK 9
It is triggered by a couple of things but mainly that the Mac font code
a glyphid to be the negation of the unicode to tell a special fallback
path that the
glyphid is not actually supported by the font and low-level rendering
supply a fall back.
The essence of the fix here is that in the ICU code we reject negative
and treat them as missing.
The check for AIOBE in CompositeStrike is just an extra safe guard.
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