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dec36c3d6e
Current `transform_ty` attempts to avoid cycles when normalizing
`#[repr(transparent)]` types to their interior, but runs afoul of this
pattern used in `self_cell`:
```
struct X<T> {
x: u8,
p: PhantomData<T>,
}
#[repr(transparent)]
struct Y(X<Y>);
```
When attempting to normalize Y, it will still cycle indefinitely. By
using a types-visited list, this will instead get expanded exactly
one layer deep to X<Y>, and then stop, not attempting to normalize `Y`
any further.
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|---|---|---|
| .. | ||
| add-canonical-jump-tables-flag.rs | ||
| add-enable-split-lto-unit-flag.rs | ||
| emit-type-checks-attr-no-sanitize.rs | ||
| emit-type-checks.rs | ||
| emit-type-metadata-attr-cfi-encoding.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-const-generics.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-function-types.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-lifetimes.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-paths.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-pointer-types.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-primitive-types.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-repr-transparent-types.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-sequence-types.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-trait-types.rs | ||
| emit-type-metadata-id-itanium-cxx-abi-user-defined-types.rs | ||
| emit-type-metadata-itanium-cxx-abi-generalized.rs | ||
| emit-type-metadata-itanium-cxx-abi-normalized-generalized.rs | ||
| emit-type-metadata-itanium-cxx-abi-normalized.rs | ||
| emit-type-metadata-itanium-cxx-abi.rs | ||
| emit-type-metadata-trait-objects.rs | ||
| generalize-pointers.rs | ||
| normalize-integers.rs | ||