nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2025-01-26 22:53:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Rollup merge of #84705 - lcnr:const_generics-rec, r=joshtriplett

Browse Source 
make feature recommendations optional

this is what we're already doing for other feature gates, so it's better to be consistent
This commit is contained in:
Jack Huey 2021-04-29 19:27:26 -04:00 committed by GitHub
commit e6d8683239
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 21 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
compiler/rustc_resolve/src/diagnostics.rs
View File

@ -487,7 +487,13 @@ impl<'a> Resolver<'a> {
name
));
}
err.help("use `#![feature(const_generics)]` and `#![feature(const_evaluatable_checked)]` to allow generic const expressions");
if self.session.is_nightly_build() {
err.help(
"use `#![feature(const_generics)]` and `#![feature(const_evaluatable_checked)]` \
to allow generic const expressions"
);
}
err
}

25
compiler/rustc_typeck/src/check/wfcheck.rs
View File

@ -315,17 +315,20 @@ fn check_param_wf(tcx: TyCtxt<'_>, param: &hir::GenericParam<'_>) {
),
)
} else {
tcx.sess
.struct_span_err(
hir_ty.span,
&format!(
"{} is forbidden as the type of a const generic parameter",
unsupported_type
),
)
.note("the only supported types are integers, `bool` and `char`")
.help("more complex types are supported with `#![feature(const_generics)]`")
.emit()
let mut err = tcx.sess.struct_span_err(
hir_ty.span,
&format!(
"{} is forbidden as the type of a const generic parameter",
unsupported_type
),
);
err.note("the only supported types are integers, `bool` and `char`");
if tcx.sess.is_nightly_build() {
err.help(
"more complex types are supported with `#![feature(const_generics)]`",
);
}
err.emit()
}
};