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erofs-freebsd-out-tree/docs/pre13-low-c2.md
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2026-08-18 09:20:44 +02:00

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# Pre13 L-C2
The two planned zero-length on-disk tail arrays now use standard flexible array
declarators:
- `erofs_xattr_ibody_header::h_shared_xattrs`
- `erofs_xattr_long_prefix::infix`
The layout probe retains the previous `[0]` declarations and asserts equal
structure size/alignment and member offsets. Host Clang accepts both old and
new declarations with the same warning/error result and identical layouts.
The probe is also retained for the final FreeBSD guest compiler gate.
No KLD build, QEMU, smoke, or feature test was run for this batch.