RFR: JDK-8276809: java/awt/font/JNICheck/FreeTypeScalerJNICheck.java shows JNI warning on Windows [v2]

[Matthias Baesken]

On Fri, 12 Nov 2021 07:57:57 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> The new test java/awt/font/JNICheck/FreeTypeScalerJNICheck.java introduced with https://bugs.openjdk.java.net/browse/JDK-8269223 adds -Xcheck:jni to an awt related test, and shows on Windows server 2019 the following JNI warning , so the test  JNICheck/FreeTypeScalerJNICheck.java fails on this Windows version.
>> 
>> :stdErr:
>> Thu Oct 28 01:27:10 CEST 2021
>> stdout: [WARNING in native method: JNI call made without checking exceptions when required to from CallStaticVoidMethodV
>>                at sun.awt.Win32GraphicsEnvironment.initDisplay(java.desktop at 18.0.0.1-internal/Native Method)
>>                at sun.awt.Win32GraphicsEnvironment.initDisplayWrapper(java.desktop at 18.0.0.1-internal/Win32GraphicsEnvironment.java:95)
>>                at sun.awt.Win32GraphicsEnvironment.<clinit>(java.desktop at 18.0.0.1-internal/Win32GraphicsEnvironment.java:63)
>>                at sun.awt.PlatformGraphicsInfo.createGE(java.desktop at 18.0.0.1-internal/PlatformGraphicsInfo.java:34)
>>                at java.awt.GraphicsEnvironment$LocalGE.createGE(java.desktop at 18.0.0.1-internal/GraphicsEnvironment.java:93)
>>                at java.awt.GraphicsEnvironment$LocalGE.<clinit>(java.desktop at 18.0.0.1-internal/GraphicsEnvironment.java:84)
>>                at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(java.desktop at 18.0.0.1-internal/GraphicsEnvironment.java:106)
>>                at FreeTypeScalerJNICheck.runTest(FreeTypeScalerJNICheck.java:53)
>>                at FreeTypeScalerJNICheck.main(FreeTypeScalerJNICheck.java:44)
>> 
>> We can get rid of the warning by adjusting a JNU_CallStaticMethodByName call in awt_Win32GraphicsEnv.cpp .
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Add a J2dTraceLn call

Our central tests were running with a fastdebug jvm. I do not know what would have happened with an opt/product JVM on the same test machine. I would prefer the exclude list but if this is not wanted then we can use requires in the test as well.
The java/awt/font/JNICheck/FreeTypeScalerJNICheck.java  test was added with Linux in mind anyway afaik.

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PR: https://git.openjdk.java.net/jdk/pull/6306