[Tyagiquamar]

Fixes #2819. xgenerator's overlapping_memory_checker_traits returned false unconditionally, so assignment from an xgenerator reading its resized target (e.g. xt::concatenate into itself) could read uninitialized memory. Report true so a temporary is used. Root cause analysis in BYTEASK.md.

[codspeed]

Merging this PR will not alter performance

⚠️ 1 benchmark measured no execution time

Nothing ran under measurement, usually because the compiler removed the code under test. This result is not comparable, so it counts as unchanged.

Preventing compiler optimizations

• create_xview

✅ 255 untouched benchmarks

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_{Comparing Tyagiquamar:fix-xgenerator-overlap-2819 (e8acbeb) with master (d9a57b6)}

[JohanMabille]

Approving it since it fixes an issue, but I find this solution too cautious. Most generators do not read values and will suffer a performance hit with this change.
However fixing it properly required more involve changes that should be done in a dedicated PR.

[Tyagiquamar]

I'll look into more, thanks for merging this PR

However fixing it properly required more involve changes that should be done in a dedicated PR.

[JohanMabille]

I'll look into more

Do not hesitate if you have questions, the issue I opened to track it is not very detailed.

And thanks again for the fix!