Use E0741 for structural match error

Author: varkor

src/librustc_resolve/error_codes.rs

@@ -1884,7 +1884,7 @@ E0671: r##"
 
 Const parameters cannot depend on type parameters.
 The following is therefore invalid:
-```compile_fail,E0740
+```compile_fail,E0741
 #![feature(const_generics)]
 
 fn const_id<T, const N: T>() -> T { // error

src/librustc_typeck/collect.rs

@@ -1536,7 +1536,7 @@ pub fn checked_type_of(tcx: TyCtxt<'_>, def_id: DefId, fail: bool) -> Option<Ty<
                     struct_span_err!(
                         tcx.sess,
                         hir_ty.span,
-                        E0740,
+                        E0741,
                         "the types of const generic parameters must derive `PartialEq` and `Eq`",
                     ).span_label(
                         hir_ty.span,

src/librustc_typeck/error_codes.rs

@@ -4978,11 +4978,11 @@ the future, [RFC 2091] prohibits their implementation without a follow-up RFC.
 [RFC 2091]: https://github.com/rust-lang/rfcs/blob/master/text/2091-inline-semantic.md
 "##,
 
-E0740: r##"
+E0741: r##"
 Only `structural_match` types (that is, types that derive `PartialEq` and `Eq`)
 may be used as the types of const generic parameters.
 
-```compile_fail,E0740
+```compile_fail,E0741
 #![feature(const_generics)]
 
 struct A;

src/test/ui/const-generics/const-param-type-depends-on-type-param-ungated.stderr

@@ -7,13 +7,13 @@ LL | struct B<T, const N: T>(PhantomData<[T; N]>);
    = note: for more information, see https://github.com/rust-lang/rust/issues/44580
    = help: add `#![feature(const_generics)]` to the crate attributes to enable
 
-error[E0740]: the types of const generic parameters must derive `PartialEq` and `Eq`
+error[E0741]: the types of const generic parameters must derive `PartialEq` and `Eq`
   --> $DIR/const-param-type-depends-on-type-param-ungated.rs:3:22
    |
 LL | struct B<T, const N: T>(PhantomData<[T; N]>);
    |                      ^ `T` doesn't derive both `PartialEq` and `Eq`
 
 error: aborting due to 2 previous errors
 
-Some errors have detailed explanations: E0658, E0740.
+Some errors have detailed explanations: E0658, E0741.
 For more information about an error, try `rustc --explain E0658`.

src/test/ui/const-generics/const-param-type-depends-on-type-param.stderr

@@ -6,12 +6,12 @@ LL | #![feature(const_generics)]
    |
    = note: `#[warn(incomplete_features)]` on by default
 
-error[E0740]: the types of const generic parameters must derive `PartialEq` and `Eq`
+error[E0741]: the types of const generic parameters must derive `PartialEq` and `Eq`
   --> $DIR/const-param-type-depends-on-type-param.rs:9:34
    |
 LL | pub struct Dependent<T, const X: T>([(); X]);
    |                                  ^ `T` doesn't derive both `PartialEq` and `Eq`
 
 error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0740`.
+For more information about this error, try `rustc --explain E0741`.

src/test/ui/const-generics/forbid-non-structural_match-types.stderr

@@ -6,12 +6,12 @@ LL | #![feature(const_generics)]
    |
    = note: `#[warn(incomplete_features)]` on by default
 
-error[E0740]: the types of const generic parameters must derive `PartialEq` and `Eq`
+error[E0741]: the types of const generic parameters must derive `PartialEq` and `Eq`
   --> $DIR/forbid-non-structural_match-types.rs:11:19
    |
 LL | struct D<const X: C>;
    |                   ^ `C` doesn't derive both `PartialEq` and `Eq`
 
 error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0740`.
+For more information about this error, try `rustc --explain E0741`.