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Add regression test for #80375 #80419

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Dec 29, 2020
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Add regression test for #80375 #80419

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4 changes: 4 additions & 0 deletions src/test/ui/const-generics/issues/issue-80375.rs
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struct MyArray<const COUNT: usize>([u8; COUNT + 1]);
//~^ ERROR generic parameters may not be used in const operations

fn main() {}
11 changes: 11 additions & 0 deletions src/test/ui/const-generics/issues/issue-80375.stderr
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error: generic parameters may not be used in const operations
--> $DIR/issue-80375.rs:1:41
|
LL | struct MyArray<const COUNT: usize>([u8; COUNT + 1]);
| ^^^^^ cannot perform const operation using `COUNT`
|
= help: const parameters may only be used as standalone arguments, i.e. `COUNT`
= help: use `#![feature(const_generics)]` and `#![feature(const_evaluatable_checked)]` to allow generic const expressions

error: aborting due to previous error