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Rollup merge of #108373 - tshepang:where-clause-on-main, r=compiler-errors

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hir-analysis: make where-clause-on-main diagnostic translatable
This commit is contained in:
Matthias Krüger 2023-02-23 06:18:08 +01:00 committed by GitHub
commit 60014e4848
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3 changed files with 16 additions and 10 deletions
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3
compiler/rustc_hir_analysis/locales/en-US.ftl
View File

@ -127,5 +127,8 @@ hir_analysis_auto_deref_reached_recursion_limit = reached the recursion limit wh
.label = deref recursion limit reached
.help = consider increasing the recursion limit by adding a `#![recursion_limit = "{$suggested_limit}"]` attribute to your crate (`{$crate_name}`)
hir_analysis_where_clause_on_main = `main` function is not allowed to have a `where` clause
.label = `main` cannot have a `where` clause
hir_analysis_track_caller_on_main = `main` function is not allowed to be `#[track_caller]`
.label = `main` function is not allowed to be `#[track_caller]`

9
compiler/rustc_hir_analysis/src/errors.rs
View File

@ -316,6 +316,15 @@ pub struct AutoDerefReachedRecursionLimit<'a> {
pub crate_name: Symbol,
}
#[derive(Diagnostic)]
#[diag(hir_analysis_where_clause_on_main, code = "E0646")]
pub(crate) struct WhereClauseOnMain {
#[primary_span]
pub span: Span,
#[label]
pub generics_span: Option<Span>,
}
#[derive(Diagnostic)]
#[diag(hir_analysis_track_caller_on_main)]
pub(crate) struct TrackCallerOnMain {

14
compiler/rustc_hir_analysis/src/lib.rs
View File

@ -271,16 +271,10 @@ fn check_main_fn_ty(tcx: TyCtxt<'_>, main_def_id: DefId) {
} else if !main_fn_predicates.predicates.is_empty() {
// generics may bring in implicit predicates, so we skip this check if generics is present.
let generics_where_clauses_span = main_fn_where_clauses_span(tcx, main_def_id);
let mut diag = struct_span_err!(
tcx.sess,
generics_where_clauses_span.unwrap_or(main_span),
E0646,
"`main` function is not allowed to have a `where` clause"
);
if let Some(generics_where_clauses_span) = generics_where_clauses_span {
diag.span_label(generics_where_clauses_span, "`main` cannot have a `where` clause");
}
diag.emit();
tcx.sess.emit_err(errors::WhereClauseOnMain {
span: generics_where_clauses_span.unwrap_or(main_span),
generics_span: generics_where_clauses_span,
});
error = true;
}