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Finish off revisions for const generics UI tests. #76599

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Sep 12, 2020
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
error: constant expression depends on a generic parameter
--> $DIR/feature-gate-const_evaluatable_checked.rs:6:30
--> $DIR/feature-gate-const_evaluatable_checked.rs:9:30
|
LL | fn test<const N: usize>() -> Arr<N> where Arr<N>: Default {
| ^^^^^^
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
error: generic parameters must not be used inside of non trivial constant values
--> $DIR/feature-gate-const_evaluatable_checked.rs:6:33
|
LL | type Arr<const N: usize> = [u8; N - 1];
| ^ non-trivial anonymous constants must not depend on the parameter `N`
|
= help: it is currently only allowed to use either `N` or `{ N }` as generic constants

error: aborting due to previous error

Original file line number Diff line number Diff line change
@@ -1,10 +1,13 @@
#![feature(const_generics)]
#![allow(incomplete_features)]
// revisions: full min
#![cfg_attr(full, feature(const_generics))]
#![cfg_attr(full, allow(incomplete_features))]
#![cfg_attr(min, feature(min_const_generics))]

type Arr<const N: usize> = [u8; N - 1];
//[min]~^ ERROR generic parameters must not be used inside of non trivial constant values

fn test<const N: usize>() -> Arr<N> where Arr<N>: Default {
//~^ ERROR constant expression depends
//[full]~^ ERROR constant expression depends
Default::default()
}

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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
error: generic parameters must not be used inside of non trivial constant values
--> $DIR/simple.rs:8:33
|
LL | type Arr<const N: usize> = [u8; N - 1];
| ^ non-trivial anonymous constants must not depend on the parameter `N`
|
= help: it is currently only allowed to use either `N` or `{ N }` as generic constants

error: aborting due to previous error

Original file line number Diff line number Diff line change
@@ -1,8 +1,12 @@
// run-pass
#![feature(const_generics, const_evaluatable_checked)]
// [full] run-pass
// revisions: full min
#![cfg_attr(full, feature(const_generics))]
#![cfg_attr(min, feature(min_const_generics))]
#![feature(const_evaluatable_checked)]
#![allow(incomplete_features)]

type Arr<const N: usize> = [u8; N - 1];
//[min]~^ ERROR generic parameters must not be used inside of non trivial constant values

fn test<const N: usize>() -> Arr<N> where Arr<N>: Default {
Default::default()
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
error[E0080]: evaluation of constant value failed
--> $DIR/simple_fail.rs:4:33
--> $DIR/simple_fail.rs:7:33
|
LL | type Arr<const N: usize> = [u8; N - 1];
| ^^^^^ attempt to compute `0_usize - 1_usize` which would overflow
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Original file line number Diff line number Diff line change
@@ -0,0 +1,10 @@
error: generic parameters must not be used inside of non trivial constant values
--> $DIR/simple_fail.rs:7:33
|
LL | type Arr<const N: usize> = [u8; N - 1];
| ^ non-trivial anonymous constants must not depend on the parameter `N`
|
= help: it is currently only allowed to use either `N` or `{ N }` as generic constants

error: aborting due to previous error

Original file line number Diff line number Diff line change
@@ -1,7 +1,11 @@
#![feature(const_generics, const_evaluatable_checked)]
// revisions: full min
#![cfg_attr(full, feature(const_generics))]
#![cfg_attr(min, feature(min_const_generics))]
#![feature(const_evaluatable_checked)]
#![allow(incomplete_features)]

type Arr<const N: usize> = [u8; N - 1]; //~ ERROR evaluation of constant
type Arr<const N: usize> = [u8; N - 1]; //[full]~ ERROR evaluation of constant
//[min]~^ ERROR generic parameters must not be used inside of non trivial constant values

fn test<const N: usize>() -> Arr<N> where Arr<N>: Sized {
todo!()
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
#![feature(const_generics)]
#![allow(incomplete_features)]
#![cfg_attr(full, feature(const_generics))]
#![cfg_attr(full, allow(incomplete_features))]
#![cfg_attr(min, feature(min_const_generics))]

pub struct Struct<const N: usize>(());

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