"Regression" - some static bounds incorrectly compiled in 1.63..=1.67 #112283
Labels
C-bug
Category: This is a bug.
E-needs-test
Call for participation: An issue has been fixed and does not reproduce, but no test has been added.
P-low
Low priority
regression-from-stable-to-stable
Performance or correctness regression from one stable version to another.
Heads-up
The example below should not compile and currently does not compile, so this is going to be low priority.
However, the example compiled for 1.63 -- 1.67 inclusive (it doesn't compile in 1.62 or in 1.68 to current).
I didn't see anything that looked relevant in the release notes, and I figure there should at least be a test somewhere, so it doesn't start compiling again.
So this issue is primarily about making sure a test exists.
Code
I tried this code:
I expected to see this happen: Inexplicably compile like it did during some exploration months ago. (Search for "this all works" for more examples with probably irrelevant variations if you're curious.)
Instead, this happened: Failed to compile, which makes more sense.
Version it worked on
It most recently worked on: Rust 1.67, and also 1.63, 1.64, 1.65, and 1.66.
Version with regression
1.68 to present.
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