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False positive for preInc.unused after upgrading to 2.3.0 #15411
Description
Bug report
When using ++ as a unary pre operator, then PHPStan seems to disregard the actual return value if its used in a context where a return value makes sense, e.g. a return value, function call, ...
Code snippet that reproduces the problem
https://phpstan.org/r/ebea5aeb-4152-417f-ba73-f924bf3f4dd0
Expected output
No error
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Activity
drewmt commentedon Oct 6, 2026
Thanks for the clear reproducer! I submitted phpstan/phpstan-src#6692, covering consumed prefix increments/decrements and their native-engine counterparts with regression tests.
kallesommernielsen commentedon Oct 6, 2026
Thank you @drewmt! The patch looks pretty straight forward, fingers crossed it gets approved :)