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2755d12fa6
Fix ICE in needless_pass_by_value lint
If I understand it correctly, we were first creating a type with a
`RegionKind::ReErased` region and then deleted it again in
`util::implements_trait` with:
cx.tcx.erase_regions(&ty);
causing the type query to fail.
It looks like using `ReEmpty` works around that deletion.
Fixes #3144
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| .. | ||
| auxiliary | ||
| ui | ||
| ui-toml | ||
| compile-test.rs | ||
| dogfood.rs | ||
| matches.rs | ||
| missing-test-files.rs | ||
| needless_continue_helpers.rs | ||
| versioncheck.rs | ||