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Rollup merge of #84682 - jackh726:transitive_bounds_rebind, r=nikomatsakis

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Don't rebind in `transitive_bounds_that_define_assoc_type`

Fixes #83737
Fixes #84604

Also fixes another issue that I don't have a test for, popped up in [zulip](https://rust-lang.zulipchat.com/#narrow/stream/144729-wg-traits/topic/Duplicate.20symbol.20error.20.2384604/near/236570445)

r? `````@nikomatsakis`````
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Jack Huey 2021-04-29 19:27:22 -04:00 • committed by GitHub
commit 26a4f461d7
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4 changed files with 28 additions and 3 deletions
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4
compiler/rustc_middle/src/ty/flags.rs
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@ -59,6 +59,10 @@ impl FlagComputation {
{
let mut computation = FlagComputation::new();
if !value.bound_vars().is_empty() {
computation.flags = computation.flags | TypeFlags::HAS_RE_LATE_BOUND;
}
f(&mut computation, value.skip_binder());
self.add_flags(computation.flags);