Correcting invocation of ScrollConsoleScreenBufferW - using pointers instead of values. #1038
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…instead of values.
lahodaj
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Nice catch, thx @lahodaj |
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As described in OpenJDK bug:
https://bugs.openjdk.org/browse/JDK-8336375
the invocation of
ScrollConsoleScreenBufferWin the FFM implementation ofKernel32may crash. I believe the reason is that the lookup/"declared" parameters are pointers:jline3/terminal-ffm/src/main/java/org/jline/terminal/impl/ffm/Kernel32.java
Line 406 in 9489e1b
but the provided/actual invocation parameters are values:
jline3/terminal-ffm/src/main/java/org/jline/terminal/impl/ffm/Kernel32.java
Line 239 in 9489e1b
In OpenJDK, I proposed to change the code to use
.seg, which is consistent with other similar invocations inKernel32, and should ensure a pointer is sent to the native function:openjdk/jdk#20182
The patch herein is basically the same as the OpenJDK patch.
(I am not aware of a way to automatically test this.)