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compiler: Fix bug in beam_types:subtract/2 for bitstrings - #11503

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compiler: Fix bug in beam_types:subtract/2 for bitstrings#11503
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lucioleKi:isabell/compiler/fix/GH-11494/OTP-20312

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Fix #11494.
The bug caused a mismatch between type pass and validator. Valid code would be rejected by the validator.

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lucioleKi requested review from bjorng and jhogberg August 18, 2026 08:03
@lucioleKi lucioleKi self-assigned this Aug 18, 2026
@lucioleKi lucioleKi added the team:VM Assigned to OTP team VM label Aug 18, 2026
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github-actions Bot commented Aug 18, 2026

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CT Test Results

    2 files    324 suites   11m 8s ⏱️
  827 tests   825 ✅ 2 💤 0 ❌
5 476 runs  5 474 ✅ 2 💤 0 ❌

Results for commit add6b21.

♻️ This comment has been updated with latest results.

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// Erlang/OTP Github Action Bot

@lucioleKi lucioleKi added the testing currently being tested, tag is used by OTP internal CI label Aug 18, 2026
Fix erlang#11494.
The bug caused a mismatch between type pass and validator.
Valid code would be rejected by the validator.
@lucioleKi
lucioleKi force-pushed the isabell/compiler/fix/GH-11494/OTP-20312 branch from ac072e9 to add6b21 Compare August 19, 2026 12:05
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Merged to maint and master. The PR will be closed when the next emergency patches are made.

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