Report variable writes whose value never reaches a use, per array offset - #6334

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ondrejmirtes wants to merge 14 commits into

unused-variablesfrom

unused-variables-followups

Commits on Sep 7, 2026

Remove variable writes that are never read

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4173c0e
Track local variable write sites and whether their value is read

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cc65213
Add UnusedVariableRule reporting values assigned to variables that are never read

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67fb1ee
Bump expected turbo version
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3ab6518
Count variable reads walked in consume-stored mode

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935f08f
Keep variable write markers out of the native expression map

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e7a56e5
Temporarily enable unusedVariable for everyone

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2174166
Add regression test for #12789

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3cebe88
Add regression test for #12012

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b8ef984
Add regression test for #11483

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e5e8326
Add regression test for #10202

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805b8ab
Pass write markers and virtual-assign write kinds positionally

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65859f9
Add tests pinning that catch variables are only reported on PHP 8.0+

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6bd8b70
Report variable writes whose value never reaches a use, per array offset

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8e260fa