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Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8247228	13.0.4	Sergey Bylokhov	P4	Resolved	Fixed	b05
JDK-8277844	11.0.15-oracle	Anton Litvinov	P4	Resolved	Fixed	b01
JDK-8245217	11.0.8	Sergey Bylokhov	P4	Resolved	Fixed	b04
JDK-8246815	openjdk8u272	Sergey Bylokhov	P4	Resolved	Fixed	b01
JDK-8277935	8u331	Anton Litvinov	P4	Resolved	Fixed	b01

The XAWT for some native structures uses special java wrappers. These wrappers have to be created on top of the native pointer and provide access to the native fields directly w/o JNI methods.

We have incorrect usage of such wrapper in the XToolkit class:
Toolkit creates AwtScreenData wrapper on top of the XToolkit.getDefaultScreenData()
https://hg.openjdk.java.net/jdk/jdk/file/321b6fbe6815/src/java.desktop/unix/classes/sun/awt/X11/XToolkit.java#l344

But unfortunately, this native method returns the wrong pointer to getDefaultConfig():
https://hg.openjdk.java.net/jdk/jdk/file/321b6fbe6815/src/java.desktop/unix/native/libawt_xawt/xawt/XToolkit.c#l134

getScreenData() should be used instead of getDefaultConfig() since native data for default configuration is bigger than screen data we most of the time read some "random" information about visual info.

backported by

JDK-8245217 XToolkit: Misread of screen information memory

JDK-8246815 XToolkit: Misread of screen information memory

JDK-8247228 XToolkit: Misread of screen information memory

JDK-8277844 XToolkit: Misread of screen information memory

JDK-8277935 XToolkit: Misread of screen information memory

relates to

JDK-8251840 Java_sun_awt_X11_XToolkit_getDefaultScreenData should not be in make/mapfiles/libawt_xawt/mapfile-vers

JDK-8076313 GraphicsEnvironment does not detect changes in count of monitors on Linux OS

links to

Review Request

(2 relates to, 1 links to)