kakoune/test/regression/4927-crash-jumping-to-eol/in

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Fix invalid access of display line end When a line only contains non-range atoms we can end-up accessing past the end atom. Add a test that shows the issue when run with valgrind, it is unfortunately quite hard to trigger a crash because the invalidly accessed byte usually leads to the correct code path being taken (when != DisplayAtom::Range) so we have only 1 in 255 chance of triggerring a crash. Fixes #4927 2023-06-20 05:09:03 +02:00			`xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx`