bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Don't emit error within cast function, propagate it as a CastError

Browse source
This commit is contained in:
Michael Goulet 2025-03-12 19:33:27 +00:00
parent 0998d4095b
commit 5ec462e8e7
1 changed files with 19 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

33
compiler/rustc_hir_typeck/src/cast.rs
View file

@ -32,6 +32,7 @@ use rustc_ast::util::parser::ExprPrecedence;
use rustc_data_structures::fx::FxHashSet;
use rustc_errors::codes::*;
use rustc_errors::{Applicability, Diag, ErrorGuaranteed};
use rustc_hir::def_id::DefId;
use rustc_hir::{self as hir, ExprKind};
use rustc_infer::infer::DefineOpaqueTypes;
use rustc_macros::{TypeFoldable, TypeVisitable};
@ -155,7 +156,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
}
}
#[derive(Copy, Clone, Debug)]
#[derive(Debug)]
enum CastError<'tcx> {
ErrorGuaranteed(ErrorGuaranteed),
@ -182,6 +183,7 @@ enum CastError<'tcx> {
/// when we're typechecking a type parameter with a ?Sized bound.
IntToWideCast(Option<&'static str>),
ForeignNonExhaustiveAdt,
PtrPtrAddingAutoTrait(Vec<DefId>),
}
impl From<ErrorGuaranteed> for CastError<'_> {
@ -596,6 +598,21 @@ impl<'a, 'tcx> CastCheck<'tcx> {
.with_note("cannot cast an enum with a non-exhaustive variant when it's defined in another crate")
.emit();
}
CastError::PtrPtrAddingAutoTrait(added) => {
fcx.dcx().emit_err(errors::PtrCastAddAutoToObject {
span: self.span,
traits_len: added.len(),
traits: {
let mut traits: Vec<_> = added
.into_iter()
.map(|trait_did| fcx.tcx.def_path_str(trait_did))
.collect();
traits.sort();
traits.into()
},
});
}
}
}
@ -940,19 +957,7 @@ impl<'a, 'tcx> CastCheck<'tcx> {
.collect::<Vec<_>>();
if !added.is_empty() {
tcx.dcx().emit_err(errors::PtrCastAddAutoToObject {
span: self.span,
traits_len: added.len(),
traits: {
let mut traits: Vec<_> = added
.into_iter()
.map(|trait_did| tcx.def_path_str(trait_did))
.collect();
traits.sort();
traits.into()
},
});
return Err(CastError::PtrPtrAddingAutoTrait(added));
}
Ok(CastKind::PtrPtrCast)