drop borrows just prior to calling task.return
#1125
Merged
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Outdated suggestions cannot be applied.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.
Prior to #1124, we were dropping borrows too late. That PR fixed that problem, but dropped borrows too early and didn't allow application code to capture the borrows in the
Future
it returned. This patch improves the situation by dropping borrows as late as possible, but no later. As a side effect, it simplfies the code and makes implementing the generated trait(s) much more ergonomic.