bjoernager/rust
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Suppress "erroneous constant used" for constants tainted by errors

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When constant evaluation fails because its MIR is tainted by errors,
suppress note indicating that erroneous constant was used, since those
errors have to be fixed regardless of the constant being used or not.
This commit is contained in:
Tomasz Miąsko 2023-05-15 00:00:00 +00:00
parent 2913ad6db0
commit 67f455afe1
33 changed files with 76 additions and 248 deletions
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8
compiler/rustc_const_eval/src/interpret/eval_context.rs
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@ -7,7 +7,7 @@ use either::{Either, Left, Right};
use rustc_hir::{self as hir, def_id::DefId, definitions::DefPathData};
use rustc_index::IndexVec;
use rustc_middle::mir;
use rustc_middle::mir::interpret::{ErrorHandled, InterpError};
use rustc_middle::mir::interpret::{ErrorHandled, InterpError, ReportedErrorInfo};
use rustc_middle::ty::layout::{
self, FnAbiError, FnAbiOfHelpers, FnAbiRequest, LayoutError, LayoutOf, LayoutOfHelpers,
TyAndLayout,
@ -470,7 +470,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
};
// do not continue if typeck errors occurred (can only occur in local crate)
if let Some(err) = body.tainted_by_errors {
throw_inval!(AlreadyReported(err));
throw_inval!(AlreadyReported(ReportedErrorInfo::tainted_by_errors(err)));
}
Ok(body)
}
@ -517,7 +517,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
Ok(None) => throw_inval!(TooGeneric),
// FIXME(eddyb) this could be a bit more specific than `AlreadyReported`.
Err(error_reported) => throw_inval!(AlreadyReported(error_reported)),
Err(error_reported) => throw_inval!(AlreadyReported(error_reported.into())),
}
}
@ -905,7 +905,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> {
query(self.tcx.at(span.unwrap_or_else(|| self.cur_span()))).map_err(|err| {
match err {
ErrorHandled::Reported(err) => {
if let Some(span) = span {
if !err.is_tainted_by_errors() && let Some(span) = span {
// To make it easier to figure out where this error comes from, also add a note at the current location.
self.tcx.sess.span_note_without_error(span, "erroneous constant used");
}