eagerly compute sub_relations again
#140375
Draft
+107
−107
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
While still only using them for diagnostics. We could use them for cycle detection in generalization and it seems desirable to do so in the future. However, this is unsound with the old trait solver as its cache does not track these `sub_relations` in any way. We would also need to consider them when canonicalizing as otherwise instantiating the canonical response may fail.
rustbot
added
S-waiting-on-review
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
We still only using them for diagnostics with the old solver.
We could use them for cycle detection in generalization and it seems desirable to do so in the future. However, this is unsound with the old trait solver as its cache does not track these
sub_relationsin any way. We would also need to consider them when canonicalizing as otherwise instantiating the canonical response may fail.Necessary for type inference guidance due to not-yet defined opaque types, cc rust-lang/trait-system-refactor-initiative#182.
TODO: consider the
sub_relationsin canonicalizationr? @compiler-errors