[lkdvos]

On Julia ≥ 1.11, an Array parent is normalized to its Memory (A.ref.mem), which drops the offset of A.ref into that memory. Arrays that do not start at the beginning of their memory, e.g. after popfirst! or deleteat! at the front, or reshapes of those, therefore give views that are shifted:

v = collect(1.0:5.0); popfirst!(v)
StridedView(v)  # [1.0, 2.0, 3.0, 4.0] instead of [2.0, 3.0, 4.0, 5.0]

This also shifts reads and writes through Strided.jl and pointers handed to BLAS.

The fix lets _normalizeparent(A, offset) return the normalized parent together with the matching offset, so the two cannot get out of sync (the PtrArrays extension is updated accordingly). For an Array this adds the memory offset of A.ref. There are tests for reading, slicing, writing and pointer. Julia 1.10 normalizes via reshape, which keeps the offset, and was not affected.

This leaves the version alone, to be released after #60.

🤖 Generated with Claude Code

[codecov]

Codecov Report

❌ Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
ext/StridedViewsPtrArraysExt.jl	0.00%	1 Missing ⚠️

Files with missing lines	Coverage Δ
src/auxiliary.jl	72.46% <100.00%> (+1.44%)	⬆️
src/stridedview.jl	29.94% <100.00%> (ø)
ext/StridedViewsPtrArraysExt.jl	0.00% <0.00%> (ø)

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