FULL PRODUCT VERSION :
java version "1.8.0_20"
Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)

FULL OS VERSION :
Linux feather 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
JVM crash on Linux, terminated by X11, when invoking UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");

THE PROBLEM WAS REPRODUCIBLE WITH -Xint FLAG: Yes

THE PROBLEM WAS REPRODUCIBLE WITH -server FLAG: Yes

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run my https://github.com/vorburger/CrashTestDummy - I've created a simple full example reliable reproducing it

I'm willing to help further debug this if required (provided I'm given due credit somewhere)

EXPECTED VERSUS ACTUAL BEHAVIOR :
JVM should "never* crash ;)
ERROR MESSAGES/STACK TRACES THAT OCCUR :
    The program 'java' received an X Window System error.
    This probably reflects a bug in the program.
    The error was 'RenderBadPicture (invalid Picture parameter)'.
      (Details: serial 251 error_code 143 request_code 139 minor_code 6)
      (Note to programmers: normally, X errors are reported asynchronously;
       that is, you will receive the error a while after causing it.
       To debug your program, run it with the --sync command line
       option to change this behavior. You can then get a meaningful
       backtrace from your debugger if you break on the gdk_x_error() function.)

REPRODUCIBILITY :
This bug can be reproduced often.

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see https://github.com/vorburger/CrashTestDummy - I've created a simple full example reliable reproducing it
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