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Add test forbidding const parameters in const fn

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This commit is contained in:
varkor 2019-02-05 17:54:23 +01:00
parent 455d659e91
commit 2f73245ca4
2 changed files with 36 additions and 0 deletions
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12
src/test/ui/const-generics/const-fn-with-const-param.rs Normal file
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@ -0,0 +1,12 @@
#![feature(const_generics)]
//~^ WARN the feature `const_generics` is incomplete and may cause the compiler to crash
const fn const_u32_identity<const X: u32>() -> u32 {
//~^ ERROR const parameters are not permitted in `const fn`
//~^^ ERROR const generics in any position are currently unsupported
X
}
fn main() {
println!("{:?}", const_u32_identity::<18>());
}

24
src/test/ui/const-generics/const-fn-with-const-param.stderr Normal file
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warning: the feature `const_generics` is incomplete and may cause the compiler to crash
--> $DIR/const-fn-with-const-param.rs:1:12
|
LL | #![feature(const_generics)]
| ^^^^^^^^^^^^^^
error: const parameters are not permitted in `const fn`
--> $DIR/const-fn-with-const-param.rs:4:1
|
LL | / const fn const_u32_identity<const X: u32>() -> u32 {
LL | | //~^ ERROR const parameters are not permitted in `const fn`
LL | | //~^^ ERROR const generics in any position are currently unsupported
LL | | X
LL | | }
| |_^
error: const generics in any position are currently unsupported
--> $DIR/const-fn-with-const-param.rs:4:35
|
LL | const fn const_u32_identity<const X: u32>() -> u32 {
| ^
error: aborting due to 2 previous errors