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add/update tests
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‎src/test/ui/const-generics/generic_const_exprs/eval-try-unify.rs‎

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// build-pass
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#![feature(generic_const_exprs)]
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//~^ WARNING the feature `generic_const_exprs` is incomplete
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trait Generic {
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const ASSOC: usize;
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}
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impl Generic for u8 {
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const ASSOC: usize = 17;
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}
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impl Generic for u16 {
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const ASSOC: usize = 13;
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}
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fn uses_assoc_type<T: Generic, const N: usize>() -> [u8; N + T::ASSOC] {
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[0; N + T::ASSOC]
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}
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fn only_generic_n<const N: usize>() -> [u8; N + 13] {
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uses_assoc_type::<u16, N>()
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}
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fn main() {}

‎src/test/ui/const-generics/generic_const_exprs/eval-try-unify.stderr‎

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warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/eval-try-unify.rs:3:12
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|
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LL | #![feature(generic_const_exprs)]
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| ^^^^^^^^^^^^^^^^^^^
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|
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= note: `#[warn(incomplete_features)]` on by default
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= note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
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warning: 1 warning emitted
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‎src/test/ui/const-generics/issues/issue-83765.rs‎

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Original file line numberDiff line numberDiff line change
@@ -3,6 +3,7 @@
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trait TensorDimension {
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const DIM : usize;
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//~^ ERROR cycle detected when resolving instance `<LazyUpdim<T, {T::DIM}, DIM>
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const ISSCALAR : bool = Self::DIM == 0;
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fn is_scalar(&self) -> bool {Self::ISSCALAR}
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}
@@ -42,22 +43,16 @@ impl<'a,T : Broadcastable,const DIM : usize> TensorDimension for LazyUpdim<'a,T,
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impl<'a,T : Broadcastable,const DIM : usize> TensorSize for LazyUpdim<'a,T,{T::DIM},DIM> {
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fn size(&self) -> [usize;DIM] {self.size}
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//~^ ERROR method not compatible with trait
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}
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impl<'a,T : Broadcastable,const DIM : usize> Broadcastable for LazyUpdim<'a,T,{T::DIM},DIM>
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{
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type Element = T::Element;
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fn bget(&self,index:[usize;DIM]) -> Option<Self::Element> {
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//~^ ERROR method not compatible with trait
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assert!(DIM >= T::DIM);
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if !self.inbounds(index) {return None}
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//~^ ERROR unconstrained generic constant
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//~| ERROR mismatched types
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let size = self.size();
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//~^ ERROR unconstrained generic constant
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let newindex : [usize;T::DIM] = Default::default();
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//~^ ERROR the trait bound `[usize; _]: Default` is not satisfied
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self.reference.bget(newindex)
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}
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}
@@ -76,20 +71,14 @@ impl<'a,R, T : Broadcastable, F : Fn(T::Element) -> R ,
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const DIM: usize> TensorSize for BMap<'a,R,T,F,DIM> {
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fn size(&self) -> [usize;DIM] {self.reference.size()}
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//~^ ERROR unconstrained generic constant
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//~| ERROR mismatched types
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//~| ERROR method not compatible with trait
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}
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impl<'a,R, T : Broadcastable, F : Fn(T::Element) -> R ,
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const DIM: usize> Broadcastable for BMap<'a,R,T,F,DIM> {
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type Element = R;
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fn bget(&self,index:[usize;DIM]) -> Option<Self::Element> {
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//~^ ERROR method not compatible with trait
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self.reference.bget(index).map(&self.closure)
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//~^ ERROR unconstrained generic constant
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//~| ERROR mismatched types
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}
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}
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‎src/test/ui/const-generics/issues/issue-83765.stderr‎

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Original file line numberDiff line numberDiff line change
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error[E0308]: method not compatible with trait
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--> $DIR/issue-83765.rs:44:5
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error[E0391]: cycle detected when resolving instance `<LazyUpdim<T, {T::DIM}, DIM> as TensorDimension>::DIM`
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--> $DIR/issue-83765.rs:5:5
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|
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LL | fn size(&self) -> [usize;DIM] {self.size}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Self::DIM`, found `DIM`
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LL | const DIM : usize;
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| ^^^^^^^^^^^^^^^^^^
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|
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= note: expected type `Self::DIM`
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found type `DIM`
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error[E0308]: method not compatible with trait
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--> $DIR/issue-83765.rs:51:5
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|
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LL | fn bget(&self,index:[usize;DIM]) -> Option<Self::Element> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Self::DIM`, found `DIM`
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|
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= note: expected type `Self::DIM`
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found type `DIM`
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error[E0308]: method not compatible with trait
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--> $DIR/issue-83765.rs:78:5
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|
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LL | fn size(&self) -> [usize;DIM] {self.reference.size()}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Self::DIM`, found `DIM`
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|
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= note: expected type `Self::DIM`
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found type `DIM`
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error[E0308]: method not compatible with trait
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--> $DIR/issue-83765.rs:88:5
30-
|
31-
LL | fn bget(&self,index:[usize;DIM]) -> Option<Self::Element> {
32-
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Self::DIM`, found `DIM`
33-
|
34-
= note: expected type `Self::DIM`
35-
found type `DIM`
36-
37-
error: unconstrained generic constant
38-
--> $DIR/issue-83765.rs:54:18
39-
|
40-
LL | if !self.inbounds(index) {return None}
41-
| ^^^^^^^^
42-
|
43-
= help: try adding a `where` bound using this expression: `where [(); Self::DIM]:`
44-
note: required by a bound in `TensorSize::inbounds`
45-
--> $DIR/issue-83765.rs:12:38
46-
|
47-
LL | fn inbounds(&self,index : [usize;Self::DIM]) -> bool {
48-
| ^^^^^^^^^ required by this bound in `TensorSize::inbounds`
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50-
error[E0308]: mismatched types
51-
--> $DIR/issue-83765.rs:54:27
52-
|
53-
LL | if !self.inbounds(index) {return None}
54-
| ^^^^^ expected `Self::DIM`, found `DIM`
55-
|
56-
= note: expected type `Self::DIM`
57-
found type `DIM`
58-
59-
error: unconstrained generic constant
60-
--> $DIR/issue-83765.rs:57:25
61-
|
62-
LL | let size = self.size();
63-
| ^^^^
64-
|
65-
= help: try adding a `where` bound using this expression: `where [(); Self::DIM]:`
66-
note: required by a bound in `TensorSize::size`
67-
--> $DIR/issue-83765.rs:11:30
68-
|
69-
LL | fn size(&self) -> [usize;Self::DIM];
70-
| ^^^^^^^^^ required by this bound in `TensorSize::size`
71-
72-
error[E0277]: the trait bound `[usize; _]: Default` is not satisfied
73-
--> $DIR/issue-83765.rs:59:41
74-
|
75-
LL | let newindex : [usize;T::DIM] = Default::default();
76-
| ^^^^^^^^^^^^^^^^ the trait `Default` is not implemented for `[usize; _]`
77-
|
78-
help: consider introducing a `where` bound, but there might be an alternative better way to express this requirement
79-
|
80-
LL | impl<'a,T : Broadcastable,const DIM : usize> Broadcastable for LazyUpdim<'a,T,{T::DIM},DIM> where [usize; _]: Default
81-
| +++++++++++++++++++++++++
82-
83-
error: unconstrained generic constant
84-
--> $DIR/issue-83765.rs:78:51
85-
|
86-
LL | fn size(&self) -> [usize;DIM] {self.reference.size()}
87-
| ^^^^
88-
|
89-
= help: try adding a `where` bound using this expression: `where [(); Self::DIM]:`
90-
note: required by a bound in `TensorSize::size`
91-
--> $DIR/issue-83765.rs:11:30
92-
|
93-
LL | fn size(&self) -> [usize;Self::DIM];
94-
| ^^^^^^^^^ required by this bound in `TensorSize::size`
95-
96-
error[E0308]: mismatched types
97-
--> $DIR/issue-83765.rs:78:36
98-
|
99-
LL | fn size(&self) -> [usize;DIM] {self.reference.size()}
100-
| ^^^^^^^^^^^^^^^^^^^^^ expected `DIM`, found `Self::DIM`
101-
|
102-
= note: expected type `DIM`
103-
found type `Self::DIM`
104-
105-
error: unconstrained generic constant
106-
--> $DIR/issue-83765.rs:90:24
107-
|
108-
LL | self.reference.bget(index).map(&self.closure)
109-
| ^^^^
110-
|
111-
= help: try adding a `where` bound using this expression: `where [(); Self::DIM]:`
112-
note: required by a bound in `Broadcastable::bget`
113-
--> $DIR/issue-83765.rs:20:33
114-
|
115-
LL | fn bget(&self, index:[usize;Self::DIM]) -> Option<Self::Element>;
116-
| ^^^^^^^^^ required by this bound in `Broadcastable::bget`
117-
118-
error[E0308]: mismatched types
119-
--> $DIR/issue-83765.rs:90:29
120-
|
121-
LL | self.reference.bget(index).map(&self.closure)
122-
| ^^^^^ expected `Self::DIM`, found `DIM`
7+
note: ...which requires checking if `TensorDimension` fulfills its obligations...
8+
--> $DIR/issue-83765.rs:4:1
1239
|
124-
= note: expected type `Self::DIM`
125-
found type `DIM`
10+
LL | trait TensorDimension {
11+
| ^^^^^^^^^^^^^^^^^^^^^
12+
= note: ...which again requires resolving instance `<LazyUpdim<T, {T::DIM}, DIM> as TensorDimension>::DIM`, completing the cycle
13+
= note: cycle used when normalizing `<LazyUpdim<T, {T::DIM}, DIM> as TensorDimension>::DIM`
12614

127-
error: aborting due to 12 previous errors
15+
error: aborting due to previous error
12816

129-
Some errors have detailed explanations: E0277, E0308.
130-
For more information about an error, try `rustc --explain E0277`.
17+
For more information about this error, try `rustc --explain E0391`.

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