False positive for preInc.unused after upgrading to 2.3.0

[kallesommernielsen]

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

Did PHPStan help you today? Did it make you happy in any way?

No response

[drewmt]

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]

Thank you @drewmt! The patch looks pretty straight forward, fingers crossed it gets approved :)