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Created attachment 948503[details]
TestProgram and result of RHEL6, RHEL7
Description of problem:
charWidth() of RHEL6+OpenJDK7 sometimes returns "0" .
Version-Release number of selected component (if applicable):
java version,1.7.0_71
java vm name,OpenJDK 64-Bit Server VM
java vm version,24.65-b04
os name,Linux
os version,2.6.32-504.el6.x86_64
How reproducible:
Steps to Reproduce:
1.Execute FontMetricsTest4.java
Actual results:
charWidth（） sometimes returns "0".
Expected results:
charWidth（） DOESN'T return "0".
Additional info:
charWidth() of RHEL7+OpenJDK7 DOESN'T return "0" .
Please see attached "TP&Result.zip"
This seems to be a bug in the font.
On my RHEL 6.7 system, the first font used by this test is:
wqy-zenhei-fonts-0.9.45-3.el6.noarch
In particular:
/usr/share/fonts/wqy-zenhei/wqy-zenhei.ttc
If I update this font with the one shipping with RHEL7 7.1:
wqy-zenhei-fonts-0.9.46-11.el7.noarch
The test program prints the expected results.
(In reply to Peng Wu from comment #3)
> Sorry, I installed wqy-zenhei-fonts-0.9.46-11.el7.noarch on RHEL 6.7,
> the problem still exists.
>
> Could you provide more details how to fix it by fonts?
Hmm, I tried again on a fresh install and I can reproduce the issue even with the RHEL7 font package... I'm not sure why it worked before to be honest.
I debugged a bit more and it looks like a failure in freetype.
For some reason the attached test case produces a failure while loading the font glyph, the failure is consistent when loading the font at the size "3866.6667f".
The code that loads the glyph is in Java_sun_font_FreetypeFontScaler_getGlyphImageNative (called by
Java_sun_font_FreetypeFontScaler_getGlyphAdvanceNative), where FT_Load_Glyph returns an "invalid outline" error.
I tried installing freetype-2.4.11-10.el7_1.1.src.rpm from RHEL and the test doesn't print 0 anymore.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2016-0844.html
Created attachment 948503 [details] TestProgram and result of RHEL6, RHEL7 Description of problem: charWidth() of RHEL6+OpenJDK7 sometimes returns "0" . Version-Release number of selected component (if applicable): java version,1.7.0_71 java vm name,OpenJDK 64-Bit Server VM java vm version,24.65-b04 os name,Linux os version,2.6.32-504.el6.x86_64 How reproducible: Steps to Reproduce: 1.Execute FontMetricsTest4.java Actual results: charWidth（） sometimes returns "0". Expected results: charWidth（） DOESN'T return "0". Additional info: charWidth() of RHEL7+OpenJDK7 DOESN'T return "0" . Please see attached "TP&Result.zip"