4421270516
This removes `associated_const_equality` as a separate feature gate and makes it part of `min_generic_const_args` (mgca). Key changes: - Remove `associated_const_equality` from unstable features, add to removed - Update all test files to use `min_generic_const_args` instead - Preserve the original "associated const equality is incomplete" error message by specially handling `sym::associated_const_equality` spans in `feature_gate.rs` - Rename FIXME(associated_const_equality) to FIXME(mgca)
73 lines
2.7 KiB
Rust
73 lines
2.7 KiB
Rust
#![feature(generic_const_items, min_generic_const_args)]
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#![expect(incomplete_features)]
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// library crates exercise weirder code paths around
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// DefIds which were created for const args.
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#![crate_type = "lib"]
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struct Foo<const N: usize>;
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type Adt1<const N: usize> = Foo<N>;
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type Adt2<const N: usize> = Foo<{ N }>;
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type Adt3<const N: usize> = Foo<const { N }>;
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//~^ ERROR: generic parameters may not be used in const operations
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type Adt4<const N: usize> = Foo<{ 1 + 1 }>;
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//~^ ERROR: complex const arguments must be placed inside of a `const` block
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type Adt5<const N: usize> = Foo<const { 1 + 1 }>;
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type Arr<const N: usize> = [(); N];
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type Arr2<const N: usize> = [(); { N }];
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type Arr3<const N: usize> = [(); const { N }];
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//~^ ERROR: generic parameters may not be used in const operations
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type Arr4<const N: usize> = [(); 1 + 1];
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//~^ ERROR: complex const arguments must be placed inside of a `const` block
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type Arr5<const N: usize> = [(); const { 1 + 1 }];
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fn repeats<const N: usize>() -> [(); N] {
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let _1 = [(); N];
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let _2 = [(); { N }];
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let _3 = [(); const { N }];
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//~^ ERROR: generic parameters may not be used in const operations
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let _4 = [(); 1 + 1];
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//~^ ERROR: complex const arguments must be placed inside of a `const` block
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let _5 = [(); const { 1 + 1 }];
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let _6: [(); const { N }] = todo!();
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//~^ ERROR: generic parameters may not be used in const operations
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}
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#[type_const]
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const ITEM1<const N: usize>: usize = N;
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#[type_const]
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const ITEM2<const N: usize>: usize = { N };
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#[type_const]
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const ITEM3<const N: usize>: usize = const { N };
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//~^ ERROR: generic parameters may not be used in const operations
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#[type_const]
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const ITEM4<const N: usize>: usize = { 1 + 1 };
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//~^ ERROR: complex const arguments must be placed inside of a `const` block
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#[type_const]
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const ITEM5<const N: usize>: usize = const { 1 + 1};
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trait Trait {
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#[type_const]
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const ASSOC: usize;
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}
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fn ace_bounds<
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const N: usize,
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// We skip the T1 case because it doesn't resolve
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// T1: Trait<ASSOC = N>,
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T2: Trait<ASSOC = { N }>,
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T3: Trait<ASSOC = const { N }>,
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//~^ ERROR: generic parameters may not be used in const operations
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T4: Trait<ASSOC = { 1 + 1 }>,
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//~^ ERROR: complex const arguments must be placed inside of a `const` block
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T5: Trait<ASSOC = const { 1 + 1 }>,
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>() {}
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struct Default1<const N: usize, const M: usize = N>;
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struct Default2<const N: usize, const M: usize = { N }>;
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struct Default3<const N: usize, const M: usize = const { N }>;
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//~^ ERROR: generic parameters may not be used in const operations
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struct Default4<const N: usize, const M: usize = { 1 + 1 }>;
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//~^ ERROR: complex const arguments must be placed inside of a `const` block
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struct Default5<const N: usize, const M: usize = const { 1 + 1}>;
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