Backport "Flag class file collision as error" to 3.3 LTS#36

Merged

tgodzik merged 3 commits intolts-3.3from

backport-lts-3.3-19332

Feb 7, 2025

Commits on Feb 6, 2025

Flag class file collision as error

Friendseeker
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tgodzik
committed
Add test case neg/i19248

Friendseeker
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tgodzik
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Reclassify main-functions-nameclash test

Friendseeker
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tgodzik
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