Fix regression in cyclic constraint handling #16514
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The CI fails because the test case fails -Ycheck:typer, but it was already broken like that in previous releases. I'll investigate and/or find a simpler test case. |
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I agree, this would make it safer. |
This regressed in 50eb0e9 when `current.ensureNonCyclic` was incorrectly replaced by `validBoundsFor` which operates on `this`, not `current`. This isn't the first time we make this error (cf a8641c5), maybe we should refactor OrderingConstraint so that operations on `current` are done in the companion object where `this` isn't accessible. Fixes scala#16471. Note that the test case from this issue couldn't be added because it fails `-Ycheck:typer`, but this was also the case before the regression. This is now tracked by scala#16524.
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I've replaced the test case by a unit test and opened #16524 to keep track of the Ycheck failure. |
odersky
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Dec 14, 2022
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This regressed in 50eb0e9 when
current.ensureNonCyclicwas incorrectly replaced byvalidBoundsForwhich operates onthis, notcurrent.This isn't the first time we make this error (cf
a8641c5), maybe we should refactor OrderingConstraint so that operations on
currentare done in the companion object wherethisisn't accessible.Fixes #16471. Note that the test case from this issue couldn't be added because it fails
-Ycheck:typer, but this was also the case before the regression. This is now tracked by #16524.