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@abgruszecki abgruszecki commented Mar 11, 2020

Fixes #8431.

@smarter this one is ready to go! Going commit-by-commit will help. It turns out that we didn't actually need to care about SI-2712, since:

  1. the problematic function is appOK
  2. which is a nested function of canInstantiate
  3. which is only entered with the RHS tycon, _if_the rhs tycon is a non-instantiated type variable

Fix gadt-uninjectivity test, as it wasn't clear what it was actually
testing.
@abgruszecki abgruszecki marked this pull request as ready for review March 23, 2020 11:35
@abgruszecki abgruszecki requested a review from smarter March 23, 2020 11:46
@abgruszecki abgruszecki changed the title WIP: Fix #8431 Fix #8431 (Make HKT GADT constraints actually work) Mar 23, 2020
@smarter smarter merged commit a324502 into scala:master Mar 26, 2020
@smarter smarter deleted the fix-#8431 branch March 26, 2020 18:02
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GADT bounds for higher-kinded variables do not appear to work

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