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Rollup merge of #120342 - oli-obk:track_errors6, r=nnethercote
Remove various `has_errors` or `err_count` uses follow up to https://github.com/rust-lang/rust/pull/119895 r? `@nnethercote` since you recently did something similar. There are so many more of these, but I wanted to get a PR out instead of growing the commit list indefinitely. The commits all work on their own and can be reviewed commit by commit.
This commit is contained in:
Guillaume Gomez
GitHub
commit
b28e6f143e
@ -139,7 +139,7 @@ fn parse_args<'a>(ecx: &mut ExtCtxt<'a>, sp: Span, tts: TokenStream) -> PResult<
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_ => {
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let expr = p.parse_expr()?;
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if !args.named_args().is_empty() {
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ecx.dcx().emit_err(errors::PositionalAfterNamed {
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return Err(ecx.dcx().create_err(errors::PositionalAfterNamed {
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span: expr.span,
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args: args
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.named_args()
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@ -147,7 +147,7 @@ fn parse_args<'a>(ecx: &mut ExtCtxt<'a>, sp: Span, tts: TokenStream) -> PResult<
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.filter_map(|a| a.kind.ident().map(|ident| (a, ident)))
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.map(|(arg, n)| n.span.to(arg.expr.span))
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.collect(),
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});
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}));
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}
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args.add(FormatArgument { kind: FormatArgumentKind::Normal, expr });
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}
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@ -313,6 +313,8 @@ fn make_format_args(
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}
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use ArgRef::*;
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let mut unnamed_arg_after_named_arg = false;
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let mut lookup_arg = |arg: ArgRef<'_>,
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span: Option<Span>,
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used_as: PositionUsedAs,
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@ -352,6 +354,7 @@ fn make_format_args(
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// For the moment capturing variables from format strings expanded from macros is
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// disabled (see RFC #2795)
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ecx.dcx().emit_err(errors::FormatNoArgNamed { span, name });
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unnamed_arg_after_named_arg = true;
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DummyResult::raw_expr(span, true)
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};
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Ok(args.add(FormatArgument { kind: FormatArgumentKind::Captured(ident), expr }))
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@ -510,7 +513,8 @@ fn make_format_args(
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})
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.collect::<Vec<_>>();
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if !unused.is_empty() {
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let has_unused = !unused.is_empty();
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if has_unused {
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// If there's a lot of unused arguments,
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// let's check if this format arguments looks like another syntax (printf / shell).
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let detect_foreign_fmt = unused.len() > args.explicit_args().len() / 2;
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@ -529,7 +533,7 @@ fn make_format_args(
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// Only check for unused named argument names if there are no other errors to avoid causing
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// too much noise in output errors, such as when a named argument is entirely unused.
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if invalid_refs.is_empty() && ecx.dcx().has_errors().is_none() {
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if invalid_refs.is_empty() && !has_unused && !unnamed_arg_after_named_arg {
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for &(index, span, used_as) in &numeric_refences_to_named_arg {
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let (position_sp_to_replace, position_sp_for_msg) = match used_as {
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Placeholder(pspan) => (span, pspan),
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@ -485,7 +485,9 @@ pub fn compile_declarative_macro(
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)
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.pop()
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.unwrap();
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valid &= check_lhs_nt_follows(sess, def, &tt);
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// We don't handle errors here, the driver will abort
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// after parsing/expansion. we can report every error in every macro this way.
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valid &= check_lhs_nt_follows(sess, def, &tt).is_ok();
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return tt;
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}
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sess.dcx().span_bug(def.span, "wrong-structured lhs")
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@ -589,18 +591,19 @@ pub fn compile_declarative_macro(
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(mk_syn_ext(expander), rule_spans)
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}
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fn check_lhs_nt_follows(sess: &Session, def: &ast::Item, lhs: &mbe::TokenTree) -> bool {
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fn check_lhs_nt_follows(
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sess: &Session,
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def: &ast::Item,
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lhs: &mbe::TokenTree,
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) -> Result<(), ErrorGuaranteed> {
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// lhs is going to be like TokenTree::Delimited(...), where the
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// entire lhs is those tts. Or, it can be a "bare sequence", not wrapped in parens.
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if let mbe::TokenTree::Delimited(.., delimited) = lhs {
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check_matcher(sess, def, &delimited.tts)
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} else {
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let msg = "invalid macro matcher; matchers must be contained in balanced delimiters";
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sess.dcx().span_err(lhs.span(), msg);
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false
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Err(sess.dcx().span_err(lhs.span(), msg))
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}
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// we don't abort on errors on rejection, the driver will do that for us
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// after parsing/expansion. we can report every error in every macro this way.
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}
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fn is_empty_token_tree(sess: &Session, seq: &mbe::SequenceRepetition) -> bool {
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@ -675,12 +678,15 @@ fn check_rhs(sess: &Session, rhs: &mbe::TokenTree) -> bool {
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false
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}
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fn check_matcher(sess: &Session, def: &ast::Item, matcher: &[mbe::TokenTree]) -> bool {
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fn check_matcher(
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sess: &Session,
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def: &ast::Item,
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matcher: &[mbe::TokenTree],
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) -> Result<(), ErrorGuaranteed> {
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let first_sets = FirstSets::new(matcher);
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let empty_suffix = TokenSet::empty();
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let err = sess.dcx().err_count();
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check_matcher_core(sess, def, &first_sets, matcher, &empty_suffix);
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err == sess.dcx().err_count()
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check_matcher_core(sess, def, &first_sets, matcher, &empty_suffix)?;
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Ok(())
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}
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fn has_compile_error_macro(rhs: &mbe::TokenTree) -> bool {
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@ -1020,11 +1026,13 @@ fn check_matcher_core<'tt>(
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first_sets: &FirstSets<'tt>,
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matcher: &'tt [mbe::TokenTree],
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follow: &TokenSet<'tt>,
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) -> TokenSet<'tt> {
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) -> Result<TokenSet<'tt>, ErrorGuaranteed> {
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use mbe::TokenTree;
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let mut last = TokenSet::empty();
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let mut errored = Ok(());
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// 2. For each token and suffix [T, SUFFIX] in M:
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// ensure that T can be followed by SUFFIX, and if SUFFIX may be empty,
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// then ensure T can also be followed by any element of FOLLOW.
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@ -1068,7 +1076,7 @@ fn check_matcher_core<'tt>(
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token::CloseDelim(d.delim),
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span.close,
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));
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check_matcher_core(sess, def, first_sets, &d.tts, &my_suffix);
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check_matcher_core(sess, def, first_sets, &d.tts, &my_suffix)?;
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// don't track non NT tokens
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last.replace_with_irrelevant();
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@ -1100,7 +1108,7 @@ fn check_matcher_core<'tt>(
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// At this point, `suffix_first` is built, and
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// `my_suffix` is some TokenSet that we can use
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// for checking the interior of `seq_rep`.
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let next = check_matcher_core(sess, def, first_sets, &seq_rep.tts, my_suffix);
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let next = check_matcher_core(sess, def, first_sets, &seq_rep.tts, my_suffix)?;
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if next.maybe_empty {
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last.add_all(&next);
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} else {
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@ -1206,14 +1214,15 @@ fn check_matcher_core<'tt>(
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));
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}
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}
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err.emit();
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errored = Err(err.emit());
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}
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}
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}
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}
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}
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}
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last
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errored?;
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Ok(last)
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}
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fn token_can_be_followed_by_any(tok: &mbe::TokenTree) -> bool {
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@ -426,7 +426,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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.map(|vars| self.resolve_vars_if_possible(vars)),
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);
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self.report_arg_errors(
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self.set_tainted_by_errors(self.report_arg_errors(
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compatibility_diagonal,
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formal_and_expected_inputs,
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provided_args,
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@ -435,7 +435,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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fn_def_id,
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call_span,
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call_expr,
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);
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));
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}
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}
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@ -449,7 +449,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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fn_def_id: Option<DefId>,
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call_span: Span,
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call_expr: &'tcx hir::Expr<'tcx>,
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) {
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) -> ErrorGuaranteed {
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// Next, let's construct the error
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let (error_span, full_call_span, call_name, is_method) = match &call_expr.kind {
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hir::ExprKind::Call(
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@ -488,10 +488,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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}
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let tcx = self.tcx;
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// FIXME: taint after emitting errors and pass through an `ErrorGuaranteed`
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self.set_tainted_by_errors(
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tcx.dcx().span_delayed_bug(call_span, "no errors reported for args"),
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);
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// Get the argument span in the context of the call span so that
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// suggestions and labels are (more) correct when an arg is a
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@ -698,8 +694,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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Some(mismatch_idx),
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is_method,
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);
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err.emit();
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return;
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return err.emit();
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}
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}
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}
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@ -723,11 +718,11 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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if cfg!(debug_assertions) {
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span_bug!(error_span, "expected errors from argument matrix");
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} else {
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tcx.dcx().emit_err(errors::ArgMismatchIndeterminate { span: error_span });
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return tcx.dcx().emit_err(errors::ArgMismatchIndeterminate { span: error_span });
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}
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return;
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}
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let mut reported = None;
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errors.retain(|error| {
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let Error::Invalid(provided_idx, expected_idx, Compatibility::Incompatible(Some(e))) =
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error
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@ -738,16 +733,18 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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let trace =
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mk_trace(provided_span, formal_and_expected_inputs[*expected_idx], provided_ty);
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if !matches!(trace.cause.as_failure_code(*e), FailureCode::Error0308) {
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self.err_ctxt().report_and_explain_type_error(trace, *e).emit();
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reported = Some(self.err_ctxt().report_and_explain_type_error(trace, *e).emit());
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return false;
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}
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true
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});
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// We're done if we found errors, but we already emitted them.
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if errors.is_empty() {
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return;
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if let Some(reported) = reported {
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assert!(errors.is_empty());
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return reported;
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}
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assert!(!errors.is_empty());
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// Okay, now that we've emitted the special errors separately, we
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// are only left missing/extra/swapped and mismatched arguments, both
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@ -804,8 +801,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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Some(expected_idx.as_usize()),
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is_method,
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);
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err.emit();
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return;
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return err.emit();
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}
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let mut err = if formal_and_expected_inputs.len() == provided_args.len() {
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@ -1253,7 +1249,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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);
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}
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err.emit();
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err.emit()
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}
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fn suggest_ptr_null_mut(
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@ -45,14 +45,6 @@ pub struct FnCtxt<'a, 'tcx> {
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/// eventually).
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pub(super) param_env: ty::ParamEnv<'tcx>,
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|
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/// Number of errors that had been reported when we started
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/// checking this function. On exit, if we find that *more* errors
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/// have been reported, we will skip regionck and other work that
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/// expects the types within the function to be consistent.
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// FIXME(matthewjasper) This should not exist, and it's not correct
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// if type checking is run in parallel.
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err_count_on_creation: usize,
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|
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/// If `Some`, this stores coercion information for returned
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/// expressions. If `None`, this is in a context where return is
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/// inappropriate, such as a const expression.
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@ -126,7 +118,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
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FnCtxt {
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body_id,
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param_env,
|
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err_count_on_creation: inh.tcx.dcx().err_count(),
|
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ret_coercion: None,
|
||||
ret_coercion_span: Cell::new(None),
|
||||
coroutine_types: None,
|
||||
@ -195,10 +186,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
|
||||
}),
|
||||
}
|
||||
}
|
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|
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pub fn errors_reported_since_creation(&self) -> bool {
|
||||
self.dcx().err_count() > self.err_count_on_creation
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, 'tcx> Deref for FnCtxt<'a, 'tcx> {
|
||||
|
||||
@ -278,7 +278,8 @@ pub struct InferCtxt<'tcx> {
|
||||
|
||||
/// The set of predicates on which errors have been reported, to
|
||||
/// avoid reporting the same error twice.
|
||||
pub reported_trait_errors: RefCell<FxIndexMap<Span, Vec<ty::Predicate<'tcx>>>>,
|
||||
pub reported_trait_errors:
|
||||
RefCell<FxIndexMap<Span, (Vec<ty::Predicate<'tcx>>, ErrorGuaranteed)>>,
|
||||
|
||||
pub reported_signature_mismatch: RefCell<FxHashSet<(Span, Option<Span>)>>,
|
||||
|
||||
|
||||
@ -99,7 +99,7 @@ pub trait TypeErrCtxtExt<'tcx> {
|
||||
obligation: PredicateObligation<'tcx>,
|
||||
root_obligation: &PredicateObligation<'tcx>,
|
||||
error: &SelectionError<'tcx>,
|
||||
);
|
||||
) -> ErrorGuaranteed;
|
||||
|
||||
fn emit_specialized_closure_kind_error(
|
||||
&self,
|
||||
@ -107,7 +107,10 @@ pub trait TypeErrCtxtExt<'tcx> {
|
||||
trait_ref: ty::PolyTraitRef<'tcx>,
|
||||
) -> Option<ErrorGuaranteed>;
|
||||
|
||||
fn fn_arg_obligation(&self, obligation: &PredicateObligation<'tcx>) -> bool;
|
||||
fn fn_arg_obligation(
|
||||
&self,
|
||||
obligation: &PredicateObligation<'tcx>,
|
||||
) -> Result<(), ErrorGuaranteed>;
|
||||
|
||||
fn try_conversion_context(
|
||||
&self,
|
||||
@ -142,6 +145,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
(
|
||||
span,
|
||||
predicates
|
||||
.0
|
||||
.iter()
|
||||
.map(|&predicate| ErrorDescriptor { predicate, index: None })
|
||||
.collect(),
|
||||
@ -208,10 +212,13 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
}
|
||||
|
||||
let mut reported = None;
|
||||
|
||||
for from_expansion in [false, true] {
|
||||
for (error, suppressed) in iter::zip(&errors, &is_suppressed) {
|
||||
if !suppressed && error.obligation.cause.span.from_expansion() == from_expansion {
|
||||
self.report_fulfillment_error(error);
|
||||
let guar = self.report_fulfillment_error(error);
|
||||
reported = Some(guar);
|
||||
// We want to ignore desugarings here: spans are equivalent even
|
||||
// if one is the result of a desugaring and the other is not.
|
||||
let mut span = error.obligation.cause.span;
|
||||
@ -222,13 +229,17 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
self.reported_trait_errors
|
||||
.borrow_mut()
|
||||
.entry(span)
|
||||
.or_default()
|
||||
.or_insert_with(|| (vec![], guar))
|
||||
.0
|
||||
.push(error.obligation.predicate);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
self.dcx().delayed_bug("expected fulfillment errors")
|
||||
// It could be that we don't report an error because we have seen an `ErrorReported` from another source.
|
||||
// We should probably be able to fix most of these, but some are delayed bugs that get a proper error
|
||||
// after this function.
|
||||
reported.unwrap_or_else(|| self.dcx().delayed_bug("failed to report fulfillment errors"))
|
||||
}
|
||||
|
||||
/// Reports that an overflow has occurred and halts compilation. We
|
||||
@ -374,7 +385,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
mut obligation: PredicateObligation<'tcx>,
|
||||
root_obligation: &PredicateObligation<'tcx>,
|
||||
error: &SelectionError<'tcx>,
|
||||
) {
|
||||
) -> ErrorGuaranteed {
|
||||
let tcx = self.tcx;
|
||||
|
||||
if tcx.sess.opts.unstable_opts.next_solver.map(|c| c.dump_tree).unwrap_or_default()
|
||||
@ -384,10 +395,6 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
|
||||
let mut span = obligation.cause.span;
|
||||
// FIXME: statically guarantee this by tainting after the diagnostic is emitted
|
||||
self.set_tainted_by_errors(
|
||||
tcx.dcx().span_delayed_bug(span, "`report_selection_error` did not emit an error"),
|
||||
);
|
||||
|
||||
let mut err = match *error {
|
||||
SelectionError::Unimplemented => {
|
||||
@ -412,21 +419,19 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
kind: _,
|
||||
} = *obligation.cause.code()
|
||||
{
|
||||
self.report_extra_impl_obligation(
|
||||
return self.report_extra_impl_obligation(
|
||||
span,
|
||||
impl_item_def_id,
|
||||
trait_item_def_id,
|
||||
&format!("`{}`", obligation.predicate),
|
||||
)
|
||||
.emit();
|
||||
return;
|
||||
.emit()
|
||||
}
|
||||
|
||||
// Report a const-param specific error
|
||||
if let ObligationCauseCode::ConstParam(ty) = *obligation.cause.code().peel_derives()
|
||||
{
|
||||
self.report_const_param_not_wf(ty, &obligation).emit();
|
||||
return;
|
||||
return self.report_const_param_not_wf(ty, &obligation).emit();
|
||||
}
|
||||
|
||||
let bound_predicate = obligation.predicate.kind();
|
||||
@ -436,22 +441,22 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
let trait_predicate = self.resolve_vars_if_possible(trait_predicate);
|
||||
let trait_ref = trait_predicate.to_poly_trait_ref();
|
||||
|
||||
if let Some(_guar) = self.emit_specialized_closure_kind_error(&obligation, trait_ref) {
|
||||
return;
|
||||
if let Some(guar) = self.emit_specialized_closure_kind_error(&obligation, trait_ref) {
|
||||
return guar;
|
||||
}
|
||||
|
||||
// FIXME(effects)
|
||||
let predicate_is_const = false;
|
||||
|
||||
if self.dcx().has_errors().is_some()
|
||||
if let Some(guar) = self.dcx().has_errors()
|
||||
&& trait_predicate.references_error()
|
||||
{
|
||||
return;
|
||||
return guar;
|
||||
}
|
||||
if self.fn_arg_obligation(&obligation) {
|
||||
// Silence redundant errors on binding acccess that are already
|
||||
// reported on the binding definition (#56607).
|
||||
return;
|
||||
// Silence redundant errors on binding acccess that are already
|
||||
// reported on the binding definition (#56607).
|
||||
if let Err(guar) = self.fn_arg_obligation(&obligation) {
|
||||
return guar;
|
||||
}
|
||||
let mut file = None;
|
||||
let (post_message, pre_message, type_def) = self
|
||||
@ -515,7 +520,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
trait_ref,
|
||||
span,
|
||||
) {
|
||||
GetSafeTransmuteErrorAndReason::Silent => return,
|
||||
GetSafeTransmuteErrorAndReason::Silent => return self.dcx().span_delayed_bug(span, "silent safe transmute error"),
|
||||
GetSafeTransmuteErrorAndReason::Error {
|
||||
err_msg,
|
||||
safe_transmute_explanation,
|
||||
@ -576,8 +581,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
have_alt_message,
|
||||
) {
|
||||
self.note_obligation_cause(&mut err, &obligation);
|
||||
err.emit();
|
||||
return;
|
||||
return err.emit();
|
||||
}
|
||||
|
||||
file_note.map(|note| err.note(note));
|
||||
@ -680,13 +684,11 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
|
||||
if self.suggest_add_clone_to_arg(&obligation, &mut err, trait_predicate) {
|
||||
err.emit();
|
||||
return;
|
||||
return err.emit();
|
||||
}
|
||||
|
||||
if self.suggest_impl_trait(&mut err, &obligation, trait_predicate) {
|
||||
err.emit();
|
||||
return;
|
||||
return err.emit();
|
||||
}
|
||||
|
||||
if is_unsize {
|
||||
@ -776,8 +778,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
Some(sym::Debug | sym::Display)
|
||||
)
|
||||
{
|
||||
err.emit();
|
||||
return;
|
||||
return err.emit();
|
||||
}
|
||||
|
||||
err
|
||||
@ -912,8 +913,8 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
found_trait_ref,
|
||||
expected_trait_ref,
|
||||
) {
|
||||
Some(err) => err,
|
||||
None => return,
|
||||
Ok(err) => err,
|
||||
Err(guar) => return guar,
|
||||
}
|
||||
}
|
||||
|
||||
@ -934,15 +935,15 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
SelectionError::NotConstEvaluatable(NotConstEvaluatable::MentionsParam) => {
|
||||
match self.report_not_const_evaluatable_error(&obligation, span) {
|
||||
Some(err) => err,
|
||||
None => return,
|
||||
Ok(err) => err,
|
||||
Err(guar) => return guar,
|
||||
}
|
||||
}
|
||||
|
||||
// Already reported in the query.
|
||||
SelectionError::NotConstEvaluatable(NotConstEvaluatable::Error(_)) |
|
||||
SelectionError::NotConstEvaluatable(NotConstEvaluatable::Error(guar)) |
|
||||
// Already reported.
|
||||
Overflow(OverflowError::Error(_)) => return,
|
||||
Overflow(OverflowError::Error(guar)) => return guar,
|
||||
|
||||
Overflow(_) => {
|
||||
bug!("overflow should be handled before the `report_selection_error` path");
|
||||
@ -951,7 +952,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
|
||||
self.note_obligation_cause(&mut err, &obligation);
|
||||
self.point_at_returns_when_relevant(&mut err, &obligation);
|
||||
err.emit();
|
||||
err.emit()
|
||||
}
|
||||
|
||||
fn emit_specialized_closure_kind_error(
|
||||
@ -986,7 +987,10 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
}
|
||||
|
||||
fn fn_arg_obligation(&self, obligation: &PredicateObligation<'tcx>) -> bool {
|
||||
fn fn_arg_obligation(
|
||||
&self,
|
||||
obligation: &PredicateObligation<'tcx>,
|
||||
) -> Result<(), ErrorGuaranteed> {
|
||||
if let ObligationCauseCode::FunctionArgumentObligation { arg_hir_id, .. } =
|
||||
obligation.cause.code()
|
||||
&& let Some(Node::Expr(arg)) = self.tcx.opt_hir_node(*arg_hir_id)
|
||||
@ -996,12 +1000,12 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
hir::Path { res: hir::def::Res::Local(hir_id), .. },
|
||||
)) = arg.kind
|
||||
&& let Some(Node::Pat(pat)) = self.tcx.opt_hir_node(*hir_id)
|
||||
&& let Some(preds) = self.reported_trait_errors.borrow().get(&pat.span)
|
||||
&& let Some((preds, guar)) = self.reported_trait_errors.borrow().get(&pat.span)
|
||||
&& preds.contains(&obligation.predicate)
|
||||
{
|
||||
return true;
|
||||
return Err(*guar);
|
||||
}
|
||||
false
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// When the `E` of the resulting `Result<T, E>` in an expression `foo().bar().baz()?`,
|
||||
@ -1323,13 +1327,13 @@ pub(super) trait InferCtxtPrivExt<'tcx> {
|
||||
// `error` occurring implies that `cond` occurs.
|
||||
fn error_implies(&self, cond: ty::Predicate<'tcx>, error: ty::Predicate<'tcx>) -> bool;
|
||||
|
||||
fn report_fulfillment_error(&self, error: &FulfillmentError<'tcx>);
|
||||
fn report_fulfillment_error(&self, error: &FulfillmentError<'tcx>) -> ErrorGuaranteed;
|
||||
|
||||
fn report_projection_error(
|
||||
&self,
|
||||
obligation: &PredicateObligation<'tcx>,
|
||||
error: &MismatchedProjectionTypes<'tcx>,
|
||||
);
|
||||
) -> ErrorGuaranteed;
|
||||
|
||||
fn maybe_detailed_projection_msg(
|
||||
&self,
|
||||
@ -1395,7 +1399,7 @@ pub(super) trait InferCtxtPrivExt<'tcx> {
|
||||
trait_ref_and_ty: ty::Binder<'tcx, (ty::TraitPredicate<'tcx>, Ty<'tcx>)>,
|
||||
) -> PredicateObligation<'tcx>;
|
||||
|
||||
fn maybe_report_ambiguity(&self, obligation: &PredicateObligation<'tcx>);
|
||||
fn maybe_report_ambiguity(&self, obligation: &PredicateObligation<'tcx>) -> ErrorGuaranteed;
|
||||
|
||||
fn predicate_can_apply(
|
||||
&self,
|
||||
@ -1512,13 +1516,13 @@ pub(super) trait InferCtxtPrivExt<'tcx> {
|
||||
span: Span,
|
||||
found_trait_ref: ty::Binder<'tcx, ty::TraitRef<'tcx>>,
|
||||
expected_trait_ref: ty::Binder<'tcx, ty::TraitRef<'tcx>>,
|
||||
) -> Option<DiagnosticBuilder<'tcx>>;
|
||||
) -> Result<DiagnosticBuilder<'tcx>, ErrorGuaranteed>;
|
||||
|
||||
fn report_not_const_evaluatable_error(
|
||||
&self,
|
||||
obligation: &PredicateObligation<'tcx>,
|
||||
span: Span,
|
||||
) -> Option<DiagnosticBuilder<'tcx>>;
|
||||
) -> Result<DiagnosticBuilder<'tcx>, ErrorGuaranteed>;
|
||||
}
|
||||
|
||||
impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
@ -1564,7 +1568,7 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
|
||||
#[instrument(skip(self), level = "debug")]
|
||||
fn report_fulfillment_error(&self, error: &FulfillmentError<'tcx>) {
|
||||
fn report_fulfillment_error(&self, error: &FulfillmentError<'tcx>) -> ErrorGuaranteed {
|
||||
if self.tcx.sess.opts.unstable_opts.next_solver.map(|c| c.dump_tree).unwrap_or_default()
|
||||
== DumpSolverProofTree::OnError
|
||||
{
|
||||
@ -1572,31 +1576,29 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
|
||||
match error.code {
|
||||
FulfillmentErrorCode::SelectionError(ref selection_error) => {
|
||||
self.report_selection_error(
|
||||
FulfillmentErrorCode::SelectionError(ref selection_error) => self
|
||||
.report_selection_error(
|
||||
error.obligation.clone(),
|
||||
&error.root_obligation,
|
||||
selection_error,
|
||||
);
|
||||
}
|
||||
),
|
||||
FulfillmentErrorCode::ProjectionError(ref e) => {
|
||||
self.report_projection_error(&error.obligation, e);
|
||||
self.report_projection_error(&error.obligation, e)
|
||||
}
|
||||
FulfillmentErrorCode::Ambiguity { overflow: false } => {
|
||||
self.maybe_report_ambiguity(&error.obligation);
|
||||
self.maybe_report_ambiguity(&error.obligation)
|
||||
}
|
||||
FulfillmentErrorCode::Ambiguity { overflow: true } => {
|
||||
self.report_overflow_no_abort(error.obligation.clone());
|
||||
self.report_overflow_no_abort(error.obligation.clone())
|
||||
}
|
||||
FulfillmentErrorCode::SubtypeError(ref expected_found, ref err) => {
|
||||
self.report_mismatched_types(
|
||||
FulfillmentErrorCode::SubtypeError(ref expected_found, ref err) => self
|
||||
.report_mismatched_types(
|
||||
&error.obligation.cause,
|
||||
expected_found.expected,
|
||||
expected_found.found,
|
||||
*err,
|
||||
)
|
||||
.emit();
|
||||
}
|
||||
.emit(),
|
||||
FulfillmentErrorCode::ConstEquateError(ref expected_found, ref err) => {
|
||||
let mut diag = self.report_mismatched_consts(
|
||||
&error.obligation.cause,
|
||||
@ -1620,11 +1622,9 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
&mut Default::default(),
|
||||
);
|
||||
}
|
||||
diag.emit();
|
||||
}
|
||||
FulfillmentErrorCode::Cycle(ref cycle) => {
|
||||
self.report_overflow_obligation_cycle(cycle);
|
||||
diag.emit()
|
||||
}
|
||||
FulfillmentErrorCode::Cycle(ref cycle) => self.report_overflow_obligation_cycle(cycle),
|
||||
}
|
||||
}
|
||||
|
||||
@ -1633,11 +1633,11 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
&self,
|
||||
obligation: &PredicateObligation<'tcx>,
|
||||
error: &MismatchedProjectionTypes<'tcx>,
|
||||
) {
|
||||
) -> ErrorGuaranteed {
|
||||
let predicate = self.resolve_vars_if_possible(obligation.predicate);
|
||||
|
||||
if predicate.references_error() {
|
||||
return;
|
||||
if let Err(e) = predicate.error_reported() {
|
||||
return e;
|
||||
}
|
||||
|
||||
self.probe(|_| {
|
||||
@ -1802,8 +1802,8 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
false,
|
||||
);
|
||||
self.note_obligation_cause(&mut diag, obligation);
|
||||
diag.emit();
|
||||
});
|
||||
diag.emit()
|
||||
})
|
||||
}
|
||||
|
||||
fn maybe_detailed_projection_msg(
|
||||
@ -2341,7 +2341,7 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
|
||||
#[instrument(skip(self), level = "debug")]
|
||||
fn maybe_report_ambiguity(&self, obligation: &PredicateObligation<'tcx>) {
|
||||
fn maybe_report_ambiguity(&self, obligation: &PredicateObligation<'tcx>) -> ErrorGuaranteed {
|
||||
// Unable to successfully determine, probably means
|
||||
// insufficient type information, but could mean
|
||||
// ambiguous impls. The latter *ought* to be a
|
||||
@ -2361,8 +2361,8 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
let trait_ref = bound_predicate.rebind(data.trait_ref);
|
||||
debug!(?trait_ref);
|
||||
|
||||
if predicate.references_error() {
|
||||
return;
|
||||
if let Err(e) = predicate.error_reported() {
|
||||
return e;
|
||||
}
|
||||
|
||||
// This is kind of a hack: it frequently happens that some earlier
|
||||
@ -2381,17 +2381,20 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
// check upstream for type errors and don't add the obligations to
|
||||
// begin with in those cases.
|
||||
if self.tcx.lang_items().sized_trait() == Some(trait_ref.def_id()) {
|
||||
if let None = self.tainted_by_errors() {
|
||||
let err = self.emit_inference_failure_err(
|
||||
obligation.cause.body_id,
|
||||
span,
|
||||
trait_ref.self_ty().skip_binder().into(),
|
||||
ErrorCode::E0282,
|
||||
false,
|
||||
);
|
||||
err.stash(span, StashKey::MaybeForgetReturn);
|
||||
match self.tainted_by_errors() {
|
||||
None => {
|
||||
let err = self.emit_inference_failure_err(
|
||||
obligation.cause.body_id,
|
||||
span,
|
||||
trait_ref.self_ty().skip_binder().into(),
|
||||
ErrorCode::E0282,
|
||||
false,
|
||||
);
|
||||
err.stash(span, StashKey::MaybeForgetReturn);
|
||||
return self.dcx().delayed_bug("stashed error never reported");
|
||||
}
|
||||
Some(e) => return e,
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
// Typically, this ambiguity should only happen if
|
||||
@ -2450,19 +2453,21 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
}
|
||||
if ambiguities.len() > 1 && ambiguities.len() < 10 && has_non_region_infer {
|
||||
if self.tainted_by_errors().is_some() && subst.is_none() {
|
||||
if let Some(e) = self.tainted_by_errors()
|
||||
&& subst.is_none()
|
||||
{
|
||||
// If `subst.is_none()`, then this is probably two param-env
|
||||
// candidates or impl candidates that are equal modulo lifetimes.
|
||||
// Therefore, if we've already emitted an error, just skip this
|
||||
// one, since it's not particularly actionable.
|
||||
err.cancel();
|
||||
return;
|
||||
return e;
|
||||
}
|
||||
self.annotate_source_of_ambiguity(&mut err, &ambiguities, predicate);
|
||||
} else {
|
||||
if self.tainted_by_errors().is_some() {
|
||||
if let Some(e) = self.tainted_by_errors() {
|
||||
err.cancel();
|
||||
return;
|
||||
return e;
|
||||
}
|
||||
err.note(format!("cannot satisfy `{predicate}`"));
|
||||
let impl_candidates = self
|
||||
@ -2613,11 +2618,15 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
ty::PredicateKind::Clause(ty::ClauseKind::WellFormed(arg)) => {
|
||||
// Same hacky approach as above to avoid deluging user
|
||||
// with error messages.
|
||||
if arg.references_error()
|
||||
|| self.dcx().has_errors().is_some()
|
||||
|| self.tainted_by_errors().is_some()
|
||||
{
|
||||
return;
|
||||
|
||||
if let Err(e) = arg.error_reported() {
|
||||
return e;
|
||||
}
|
||||
if let Some(e) = self.tainted_by_errors() {
|
||||
return e;
|
||||
}
|
||||
if let Some(e) = self.dcx().has_errors() {
|
||||
return e;
|
||||
}
|
||||
|
||||
self.emit_inference_failure_err(
|
||||
@ -2630,12 +2639,15 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
|
||||
ty::PredicateKind::Subtype(data) => {
|
||||
if data.references_error()
|
||||
|| self.dcx().has_errors().is_some()
|
||||
|| self.tainted_by_errors().is_some()
|
||||
{
|
||||
if let Err(e) = data.error_reported() {
|
||||
return e;
|
||||
}
|
||||
if let Some(e) = self.tainted_by_errors() {
|
||||
return e;
|
||||
}
|
||||
if let Some(e) = self.dcx().has_errors() {
|
||||
// no need to overload user in such cases
|
||||
return;
|
||||
return e;
|
||||
}
|
||||
let SubtypePredicate { a_is_expected: _, a, b } = data;
|
||||
// both must be type variables, or the other would've been instantiated
|
||||
@ -2649,8 +2661,11 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
)
|
||||
}
|
||||
ty::PredicateKind::Clause(ty::ClauseKind::Projection(data)) => {
|
||||
if predicate.references_error() || self.tainted_by_errors().is_some() {
|
||||
return;
|
||||
if let Err(e) = predicate.error_reported() {
|
||||
return e;
|
||||
}
|
||||
if let Some(e) = self.tainted_by_errors() {
|
||||
return e;
|
||||
}
|
||||
let subst = data
|
||||
.projection_ty
|
||||
@ -2681,8 +2696,11 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
|
||||
ty::PredicateKind::Clause(ty::ClauseKind::ConstEvaluatable(data)) => {
|
||||
if predicate.references_error() || self.tainted_by_errors().is_some() {
|
||||
return;
|
||||
if let Err(e) = predicate.error_reported() {
|
||||
return e;
|
||||
}
|
||||
if let Some(e) = self.tainted_by_errors() {
|
||||
return e;
|
||||
}
|
||||
let subst = data.walk().find(|g| g.is_non_region_infer());
|
||||
if let Some(subst) = subst {
|
||||
@ -2707,8 +2725,12 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
}
|
||||
_ => {
|
||||
if self.dcx().has_errors().is_some() || self.tainted_by_errors().is_some() {
|
||||
return;
|
||||
if let Some(e) = self.tainted_by_errors() {
|
||||
return e;
|
||||
}
|
||||
if let Some(e) = self.dcx().has_errors() {
|
||||
// no need to overload user in such cases
|
||||
return e;
|
||||
}
|
||||
struct_span_code_err!(
|
||||
self.dcx(),
|
||||
@ -2721,7 +2743,7 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
}
|
||||
};
|
||||
self.note_obligation_cause(&mut err, obligation);
|
||||
err.emit();
|
||||
err.emit()
|
||||
}
|
||||
|
||||
fn annotate_source_of_ambiguity(
|
||||
@ -3441,16 +3463,14 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
span: Span,
|
||||
found_trait_ref: ty::Binder<'tcx, ty::TraitRef<'tcx>>,
|
||||
expected_trait_ref: ty::Binder<'tcx, ty::TraitRef<'tcx>>,
|
||||
) -> Option<DiagnosticBuilder<'tcx>> {
|
||||
) -> Result<DiagnosticBuilder<'tcx>, ErrorGuaranteed> {
|
||||
let found_trait_ref = self.resolve_vars_if_possible(found_trait_ref);
|
||||
let expected_trait_ref = self.resolve_vars_if_possible(expected_trait_ref);
|
||||
|
||||
if expected_trait_ref.self_ty().references_error() {
|
||||
return None;
|
||||
}
|
||||
expected_trait_ref.self_ty().error_reported()?;
|
||||
|
||||
let Some(found_trait_ty) = found_trait_ref.self_ty().no_bound_vars() else {
|
||||
return None;
|
||||
return Err(self.dcx().delayed_bug("bound vars outside binder"));
|
||||
};
|
||||
|
||||
let found_did = match *found_trait_ty.kind() {
|
||||
@ -3464,7 +3484,7 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
if !self.reported_signature_mismatch.borrow_mut().insert((span, found_span)) {
|
||||
// We check closures twice, with obligations flowing in different directions,
|
||||
// but we want to complain about them only once.
|
||||
return None;
|
||||
return Err(self.dcx().span_delayed_bug(span, "already_reported"));
|
||||
}
|
||||
|
||||
let mut not_tupled = false;
|
||||
@ -3493,7 +3513,7 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
// This shouldn't be common unless manually implementing one of the
|
||||
// traits manually, but don't make it more confusing when it does
|
||||
// happen.
|
||||
Some(
|
||||
Ok(
|
||||
if Some(expected_trait_ref.def_id()) != self.tcx.lang_items().coroutine_trait()
|
||||
&& not_tupled
|
||||
{
|
||||
@ -3542,9 +3562,10 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
&self,
|
||||
obligation: &PredicateObligation<'tcx>,
|
||||
span: Span,
|
||||
) -> Option<DiagnosticBuilder<'tcx>> {
|
||||
) -> Result<DiagnosticBuilder<'tcx>, ErrorGuaranteed> {
|
||||
if !self.tcx.features().generic_const_exprs {
|
||||
self.dcx()
|
||||
let guar = self
|
||||
.dcx()
|
||||
.struct_span_err(span, "constant expression depends on a generic parameter")
|
||||
// FIXME(const_generics): we should suggest to the user how they can resolve this
|
||||
// issue. However, this is currently not actually possible
|
||||
@ -3554,7 +3575,7 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
// be reachable.
|
||||
.with_note("this may fail depending on what value the parameter takes")
|
||||
.emit();
|
||||
return None;
|
||||
return Err(guar);
|
||||
}
|
||||
|
||||
match obligation.predicate.kind().skip_binder() {
|
||||
@ -3569,13 +3590,13 @@ impl<'tcx> InferCtxtPrivExt<'tcx> for TypeErrCtxt<'_, 'tcx> {
|
||||
)),
|
||||
_ => err.help("consider adding a `where` bound using this expression"),
|
||||
};
|
||||
Some(err)
|
||||
Ok(err)
|
||||
}
|
||||
ty::ConstKind::Expr(_) => {
|
||||
let err = self
|
||||
.dcx()
|
||||
.struct_span_err(span, format!("unconstrained generic constant `{ct}`"));
|
||||
Some(err)
|
||||
Ok(err)
|
||||
}
|
||||
_ => {
|
||||
bug!("const evaluatable failed for non-unevaluated const `{ct:?}`");
|
||||
|
||||
@ -37,12 +37,6 @@ pub(super) fn check_cast<'tcx>(
|
||||
let inherited = Inherited::new(cx.tcx, local_def_id);
|
||||
let fn_ctxt = FnCtxt::new(&inherited, cx.param_env, local_def_id);
|
||||
|
||||
// If we already have errors, we can't be sure we can pointer cast.
|
||||
assert!(
|
||||
!fn_ctxt.errors_reported_since_creation(),
|
||||
"Newly created FnCtxt contained errors"
|
||||
);
|
||||
|
||||
if let Ok(check) = cast::CastCheck::new(
|
||||
&fn_ctxt,
|
||||
e,
|
||||
@ -53,17 +47,7 @@ pub(super) fn check_cast<'tcx>(
|
||||
DUMMY_SP,
|
||||
hir::Constness::NotConst,
|
||||
) {
|
||||
let res = check.do_check(&fn_ctxt);
|
||||
|
||||
// do_check's documentation says that it might return Ok and create
|
||||
// errors in the fcx instead of returning Err in some cases. Those cases
|
||||
// should be filtered out before getting here.
|
||||
assert!(
|
||||
!fn_ctxt.errors_reported_since_creation(),
|
||||
"`fn_ctxt` contained errors after cast check!"
|
||||
);
|
||||
|
||||
res.ok()
|
||||
check.do_check(&fn_ctxt).ok()
|
||||
} else {
|
||||
None
|
||||
}
|
||||
|
||||
@ -6,6 +6,5 @@ fn main() {}
|
||||
|
||||
fn f() -> impl Foo {
|
||||
//~^ ERROR the trait bound `i32: Foo` is not satisfied
|
||||
//~| ERROR `report_selection_error` did not emit an error
|
||||
1i32
|
||||
}
|
||||
|
||||
@ -1,9 +1,3 @@
|
||||
error: `report_selection_error` did not emit an error
|
||||
--> $DIR/eagerly-emit.rs:7:11
|
||||
|
|
||||
LL | fn f() -> impl Foo {
|
||||
| ^^^^^^^^
|
||||
|
||||
error: trimmed_def_paths constructed but no error emitted; use `DelayDm` for lints or `with_no_trimmed_paths` for debugging
|
||||
|
||||
error[E0277]: the trait bound `i32: Foo` is not satisfied
|
||||
@ -11,7 +5,7 @@ error[E0277]: the trait bound `i32: Foo` is not satisfied
|
||||
|
|
||||
LL | fn f() -> impl Foo {
|
||||
| ^^^^^^^^ the trait `Foo` is not implemented for `i32`
|
||||
...
|
||||
LL |
|
||||
LL | 1i32
|
||||
| ---- return type was inferred to be `i32` here
|
||||
|
|
||||
@ -21,8 +15,6 @@ help: this trait has no implementations, consider adding one
|
||||
LL | trait Foo {}
|
||||
| ^^^^^^^^^
|
||||
|
||||
error: expected fulfillment errors
|
||||
|
||||
error: aborting due to 4 previous errors
|
||||
error: aborting due to 2 previous errors
|
||||
|
||||
For more information about this error, try `rustc --explain E0277`.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user