mirror of https://github.com/rust-lang/rust
53 lines
1.1 KiB
Rust
53 lines
1.1 KiB
Rust
// Regression test for #105009. the issue here was that even after the `RevealAll` pass,
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// `validate` still used `Reveal::UserFacing`. This meant that it now ends up comparing
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// opaque types with their revealed version, resulting in an ICE.
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//
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// We're using these flags to run the `RevealAll` pass while making it less likely to
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// accidentally removing the assignment from `Foo<fn_ptr>` to `Foo<fn_def>`.
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//@ compile-flags: -Zinline_mir=yes -Zmir-opt-level=0 -Zvalidate-mir
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//@ run-pass
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use std::hint::black_box;
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trait Func {
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type Ret: Id;
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}
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trait Id {
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type Assoc;
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}
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impl Id for u32 {
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type Assoc = u32;
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}
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impl Id for i32 {
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type Assoc = i32;
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}
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impl<F: FnOnce() -> R, R: Id> Func for F {
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type Ret = R;
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}
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fn bar() -> impl Copy + Id {
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0u32
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}
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struct Foo<T: Func> {
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_func: T,
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value: Option<<<T as Func>::Ret as Id>::Assoc>,
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}
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fn main() {
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let mut fn_def = black_box(Foo {
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_func: bar,
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value: None,
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});
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let fn_ptr = black_box(Foo {
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_func: bar as fn() -> _,
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value: None,
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});
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fn_def.value = fn_ptr.value;
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black_box(fn_def);
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}
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