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fix: avoid unaligned 64-bit atomic panic on 32-bit platforms#289

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siretart wants to merge 1 commit into
pb33f:mainfrom
siretart:reproduce-unaligned-atomic
Open

fix: avoid unaligned 64-bit atomic panic on 32-bit platforms#289
siretart wants to merge 1 commit into
pb33f:mainfrom
siretart:reproduce-unaligned-atomic

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Reorder fields in regexCacheWatcher to place int64 counters before
the *sync.Map pointer. On 32-bit architectures (i386, armhf), pointers
are 4 bytes, causing the int64 fields to start at offset 4 -- which
is not 8-byte aligned. Go's sync/atomic.AddInt64 panics when the
target int64 is not 8-byte aligned on 32-bit platforms.

Found during Debian package build (golang-github-pb33f-libopenapi-validator)
on i386 and armhf.

Reorder fields in regexCacheWatcher to place int64 counters before
the *sync.Map pointer. On 32-bit architectures (i386, armhf), pointers
are 4 bytes, causing the int64 fields to start at offset 4 -- which
is not 8-byte aligned. Go's sync/atomic.AddInt64 panics when the
target int64 is not 8-byte aligned on 32-bit platforms.

Found during Debian package build (golang-github-pb33f-libopenapi-validator)
on i386 and armhf.
@codecov

codecov Bot commented Jun 16, 2026

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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.65%. Comparing base (bc5fd5a) to head (4f15cd5).
⚠️ Report is 11 commits behind head on main.

Additional details and impacted files
@@            Coverage Diff             @@
##             main     #289      +/-   ##
==========================================
- Coverage   98.08%   97.65%   -0.43%     
==========================================
  Files          64       65       +1     
  Lines        6987     7133     +146     
==========================================
+ Hits         6853     6966     +113     
- Misses        133      134       +1     
- Partials        1       33      +32     
Flag Coverage Δ
unittests 97.65% <ø> (-0.43%) ⬇️

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