36c2b011cb
New const traits syntax This PR only affects the AST and doesn't actually change anything semantically. All occurrences of `~const` outside of libcore have been replaced by `[const]`. Within libcore we have to wait for rustfmt to be bumped in the bootstrap compiler. This will happen "automatically" (when rustfmt is run) during the bootstrap bump, as rustfmt converts `~const` into `[const]`. After this we can remove the `~const` support from the parser Caveat discovered during impl: there is no legacy bare trait object recovery for `[const] Trait` as that snippet in type position goes down the slice /array parsing code and will error r? ``@fee1-dead`` cc ``@nikomatsakis`` ``@traviscross`` ``@compiler-errors``
140 lines
6.8 KiB
Plaintext
140 lines
6.8 KiB
Plaintext
error: `-Znext-solver=globally` and `generic_const_exprs` are incompatible, using them at the same time is not allowed
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:5:30
|
|
|
|
|
LL | #![feature(const_trait_impl, generic_const_exprs)]
|
|
| ^^^^^^^^^^^^^^^^^^^
|
|
|
|
|
= help: remove one of these features
|
|
|
|
error[E0391]: cycle detected when evaluating type-level constant
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
|
|
|
note: ...which requires const-evaluating + checking `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires caching mir of `accept0::{constant#0}` for CTFE...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires elaborating drops for `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires borrow-checking `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires promoting constants in MIR for `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires const checking `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires building MIR for `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires building an abstract representation for `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires building THIR for `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires type-checking `accept0::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
= note: ...which again requires evaluating type-level constant, completing the cycle
|
|
note: cycle used when checking that `accept0` is well-formed
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:29:35
|
|
|
|
|
LL | fn accept0<T: Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
|
|
|
|
error[E0391]: cycle detected when caching mir of `accept1::{constant#0}` for CTFE
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
|
|
|
note: ...which requires elaborating drops for `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires borrow-checking `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires promoting constants in MIR for `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires const checking `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires building MIR for `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires building an abstract representation for `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires building THIR for `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires type-checking `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires evaluating type-level constant...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
note: ...which requires const-evaluating + checking `accept1::{constant#0}`...
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
= note: ...which again requires caching mir of `accept1::{constant#0}` for CTFE, completing the cycle
|
|
note: cycle used when const-evaluating + checking `accept1::{constant#0}`
|
|
--> $DIR/unsatisfied-const-trait-bound.rs:33:49
|
|
|
|
|
LL | const fn accept1<T: [const] Trait>(_: Container<{ T::make() }>) {}
|
|
| ^^^^^^^^^^^^^
|
|
= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
|
|
|
|
error: aborting due to 3 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0391`.
|