[Win32] Possible StackOverflowError setting null-font

[tmssngr]

Describe the bug
Following repeating stacktrace can occur in our product when disposing controls, finally resulting in a StackOverflowError:

...
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:1383)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:984)
	at org.eclipse.swt.custom.StyledText.getPointAtOffset(StyledText.java:5190)
	at java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)
	at java.base/java.util.Spliterators$IntArraySpliterator.forEachRemaining(Spliterators.java:1124)
	at java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:712)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
	at org.eclipse.swt.custom.StyledText.setCaretLocations(StyledText.java:8440)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:1383)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:984)
	at org.eclipse.swt.custom.StyledText.getPointAtOffset(StyledText.java:5190)
	at java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)
	at java.base/java.util.Spliterators$IntArraySpliterator.forEachRemaining(Spliterators.java:1124)
	at java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:712)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
	at org.eclipse.swt.custom.StyledText.setCaretLocations(StyledText.java:8440)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:1383)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:984)
	at org.eclipse.swt.custom.StyledText.getPointAtOffset(StyledText.java:5190)
	at java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)
	at java.base/java.util.Spliterators$IntArraySpliterator.forEachRemaining(Spliterators.java:1124)
	at java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:712)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
	at org.eclipse.swt.custom.StyledText.setCaretLocations(StyledText.java:8440)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:1383)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:984)
	at org.eclipse.swt.custom.StyledText.getPointAtOffset(StyledText.java:5190)
	at java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)
	at java.base/java.util.Spliterators$IntArraySpliterator.forEachRemaining(Spliterators.java:1124)
	at java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:712)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:575)
	at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(AbstractPipeline.java:260)
	at java.base/java.util.stream.ReferencePipeline.toArray(ReferencePipeline.java:616)
	at org.eclipse.swt.custom.StyledText.setCaretLocations(StyledText.java:8440)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:1383)
	at org.eclipse.swt.custom.StyledTextRenderer.getTextLayout(StyledTextRenderer.java:984)
	at org.eclipse.swt.custom.StyledTextRenderer.calculate(StyledTextRenderer.java:306)
	at org.eclipse.swt.custom.StyledTextRenderer.calculateClientArea(StyledTextRenderer.java:336)
	at org.eclipse.swt.custom.StyledText.resetCache(StyledText.java:7833)
	at org.eclipse.swt.custom.StyledText.setFont(StyledText.java:8805)
(our code)

To Reproduce
Unfortunately, I was not yet able to reproduce in a short snippet, but only in SmartGit:

In SmartGit 24.1 Standard window open 2 repositories. Close one by middle-clicking its tab.

Expected behavior
No StackOverflowError should occur.

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS

2. Additional OS info (e.g. OS version, Linux Desktop, etc)
   Windows 11, 4k monitor, 150% zoom level.

Version since
Bisecting revealed that this was introduced by commit 7ac43c0.