Auto merge of rust-lang#120496 - GuillaumeGomez:rollup-fmu9jre, r=Gui…

…llaumeGomez

Rollup of 11 pull requests

Successful merges:

 - rust-lang#117906 (Improve display of crate name when hovered)
 - rust-lang#118533 (Suppress unhelpful diagnostics for unresolved top level attributes)
 - rust-lang#120293 (Deduplicate more sized errors on call exprs)
 - rust-lang#120295 (Remove `raw_os_nonzero` feature.)
 - rust-lang#120310 (adapt test for v0 symbol mangling)
 - rust-lang#120342 (Remove various `has_errors` or `err_count` uses)
 - rust-lang#120434 (Revert outdated version of "Add the wasm32-wasi-preview2 target")
 - rust-lang#120445 (Fix some `Arc` allocator leaks)
 - rust-lang#120475 (Improve error message when `cargo build` is used to build the compiler)
 - rust-lang#120476 (Remove some unnecessary check logic for lang items in HIR typeck)
 - rust-lang#120485 (add missing potential_query_instability for keys and values in hashmap)

r? `@ghost`
`@rustbot` modify labels: rollup

compiler/rustc_builtin_macros/src/format.rs

@@ -139,15 +139,15 @@ fn parse_args<'a>(ecx: &mut ExtCtxt<'a>, sp: Span, tts: TokenStream) -> PResult<
             _ => {
                 let expr = p.parse_expr()?;
                 if !args.named_args().is_empty() {
-                    ecx.dcx().emit_err(errors::PositionalAfterNamed {
+                    return Err(ecx.dcx().create_err(errors::PositionalAfterNamed {
                         span: expr.span,
                         args: args
                             .named_args()
                             .iter()
                             .filter_map(|a| a.kind.ident().map(|ident| (a, ident)))
                             .map(|(arg, n)| n.span.to(arg.expr.span))
                             .collect(),
-                    });
+                    }));
                 }
                 args.add(FormatArgument { kind: FormatArgumentKind::Normal, expr });
             }
@@ -313,6 +313,8 @@ fn make_format_args(
     }
     use ArgRef::*;
 
+    let mut unnamed_arg_after_named_arg = false;
+
     let mut lookup_arg = |arg: ArgRef<'_>,
                           span: Option<Span>,
                           used_as: PositionUsedAs,
@@ -352,6 +354,7 @@ fn make_format_args(
                         // For the moment capturing variables from format strings expanded from macros is
                         // disabled (see RFC #2795)
                         ecx.dcx().emit_err(errors::FormatNoArgNamed { span, name });
+                        unnamed_arg_after_named_arg = true;
                         DummyResult::raw_expr(span, true)
                     };
                     Ok(args.add(FormatArgument { kind: FormatArgumentKind::Captured(ident), expr }))
@@ -510,7 +513,8 @@ fn make_format_args(
         })
         .collect::<Vec<_>>();
 
-    if !unused.is_empty() {
+    let has_unused = !unused.is_empty();
+    if has_unused {
         // If there's a lot of unused arguments,
         // let's check if this format arguments looks like another syntax (printf / shell).
         let detect_foreign_fmt = unused.len() > args.explicit_args().len() / 2;
@@ -529,7 +533,7 @@ fn make_format_args(
 
     // Only check for unused named argument names if there are no other errors to avoid causing
     // too much noise in output errors, such as when a named argument is entirely unused.
-    if invalid_refs.is_empty() && ecx.dcx().has_errors().is_none() {
+    if invalid_refs.is_empty() && !has_unused && !unnamed_arg_after_named_arg {
         for &(index, span, used_as) in &numeric_refences_to_named_arg {
             let (position_sp_to_replace, position_sp_for_msg) = match used_as {
                 Placeholder(pspan) => (span, pspan),

compiler/rustc_codegen_llvm/src/coverageinfo/mapgen.rs

@@ -403,6 +403,7 @@ fn codegenned_and_inlined_items(tcx: TyCtxt<'_>) -> DefIdSet {
     let mut result = items.clone();
 
     for cgu in cgus {
+        #[allow(rustc::potential_query_instability)]
         for item in cgu.items().keys() {
             if let mir::mono::MonoItem::Fn(ref instance) = item {
                 let did = instance.def_id();

compiler/rustc_codegen_ssa/src/assert_module_sources.rs

@@ -267,6 +267,7 @@ impl CguReuseTracker {
 
     fn check_expected_reuse(&self, sess: &Session) {
         if let Some(ref data) = self.data {
+            #[allow(rustc::potential_query_instability)]
             let mut keys = data.expected_reuse.keys().collect::<Vec<_>>();
             keys.sort_unstable();
             for cgu_name in keys {

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -682,6 +682,7 @@ fn link_dwarf_object<'a>(
         }
 
         // Input rlibs contain .o/.dwo files from dependencies.
+        #[allow(rustc::potential_query_instability)]
         let input_rlibs = cg_results
             .crate_info
             .used_crate_source

compiler/rustc_errors/src/lib.rs

@@ -514,6 +514,7 @@ pub enum StashKey {
     MaybeForgetReturn,
     /// Query cycle detected, stashing in favor of a better error.
     Cycle,
+    UndeterminedMacroResolution,
 }
 
 fn default_track_diagnostic(diag: Diagnostic, f: &mut dyn FnMut(Diagnostic)) {

compiler/rustc_expand/src/mbe/macro_rules.rs

@@ -485,7 +485,9 @@ pub fn compile_declarative_macro(
                     )
                     .pop()
                     .unwrap();
-                    valid &= check_lhs_nt_follows(sess, def, &tt);
+                    // We don't handle errors here, the driver will abort
+                    // after parsing/expansion. we can report every error in every macro this way.
+                    valid &= check_lhs_nt_follows(sess, def, &tt).is_ok();
                     return tt;
                 }
                 sess.dcx().span_bug(def.span, "wrong-structured lhs")
@@ -589,18 +591,19 @@ pub fn compile_declarative_macro(
     (mk_syn_ext(expander), rule_spans)
 }
 
-fn check_lhs_nt_follows(sess: &Session, def: &ast::Item, lhs: &mbe::TokenTree) -> bool {
+fn check_lhs_nt_follows(
+    sess: &Session,
+    def: &ast::Item,
+    lhs: &mbe::TokenTree,
+) -> Result<(), ErrorGuaranteed> {
     // lhs is going to be like TokenTree::Delimited(...), where the
     // entire lhs is those tts. Or, it can be a "bare sequence", not wrapped in parens.
     if let mbe::TokenTree::Delimited(.., delimited) = lhs {
         check_matcher(sess, def, &delimited.tts)
     } else {
         let msg = "invalid macro matcher; matchers must be contained in balanced delimiters";
-        sess.dcx().span_err(lhs.span(), msg);
-        false
+        Err(sess.dcx().span_err(lhs.span(), msg))
     }
-    // we don't abort on errors on rejection, the driver will do that for us
-    // after parsing/expansion. we can report every error in every macro this way.
 }
 
 fn is_empty_token_tree(sess: &Session, seq: &mbe::SequenceRepetition) -> bool {
@@ -675,12 +678,15 @@ fn check_rhs(sess: &Session, rhs: &mbe::TokenTree) -> bool {
     false
 }
 
-fn check_matcher(sess: &Session, def: &ast::Item, matcher: &[mbe::TokenTree]) -> bool {
+fn check_matcher(
+    sess: &Session,
+    def: &ast::Item,
+    matcher: &[mbe::TokenTree],
+) -> Result<(), ErrorGuaranteed> {
     let first_sets = FirstSets::new(matcher);
     let empty_suffix = TokenSet::empty();
-    let err = sess.dcx().err_count();
-    check_matcher_core(sess, def, &first_sets, matcher, &empty_suffix);
-    err == sess.dcx().err_count()
+    check_matcher_core(sess, def, &first_sets, matcher, &empty_suffix)?;
+    Ok(())
 }
 
 fn has_compile_error_macro(rhs: &mbe::TokenTree) -> bool {
@@ -1020,11 +1026,13 @@ fn check_matcher_core<'tt>(
     first_sets: &FirstSets<'tt>,
     matcher: &'tt [mbe::TokenTree],
     follow: &TokenSet<'tt>,
-) -> TokenSet<'tt> {
+) -> Result<TokenSet<'tt>, ErrorGuaranteed> {
     use mbe::TokenTree;
 
     let mut last = TokenSet::empty();
 
+    let mut errored = Ok(());
+
     // 2. For each token and suffix  [T, SUFFIX] in M:
     // ensure that T can be followed by SUFFIX, and if SUFFIX may be empty,
     // then ensure T can also be followed by any element of FOLLOW.
@@ -1068,7 +1076,7 @@ fn check_matcher_core<'tt>(
                     token::CloseDelim(d.delim),
                     span.close,
                 ));
-                check_matcher_core(sess, def, first_sets, &d.tts, &my_suffix);
+                check_matcher_core(sess, def, first_sets, &d.tts, &my_suffix)?;
                 // don't track non NT tokens
                 last.replace_with_irrelevant();
 
@@ -1100,7 +1108,7 @@ fn check_matcher_core<'tt>(
                 // At this point, `suffix_first` is built, and
                 // `my_suffix` is some TokenSet that we can use
                 // for checking the interior of `seq_rep`.
-                let next = check_matcher_core(sess, def, first_sets, &seq_rep.tts, my_suffix);
+                let next = check_matcher_core(sess, def, first_sets, &seq_rep.tts, my_suffix)?;
                 if next.maybe_empty {
                     last.add_all(&next);
                 } else {
@@ -1206,14 +1214,15 @@ fn check_matcher_core<'tt>(
                                     ));
                                 }
                             }
-                            err.emit();
+                            errored = Err(err.emit());
                         }
                     }
                 }
             }
         }
     }
-    last
+    errored?;
+    Ok(last)
 }
 
 fn token_can_be_followed_by_any(tok: &mbe::TokenTree) -> bool {

compiler/rustc_hir_typeck/messages.ftl

@@ -96,9 +96,6 @@ hir_typeck_lossy_provenance_ptr2int =
 hir_typeck_method_call_on_unknown_raw_pointee =
     cannot call a method on a raw pointer with an unknown pointee type
 
-hir_typeck_missing_fn_lang_items = failed to find an overloaded call trait for closure call
-    .help = make sure the `fn`/`fn_mut`/`fn_once` lang items are defined and have correctly defined `call`/`call_mut`/`call_once` methods
-
 hir_typeck_missing_parentheses_in_range = can't call method `{$method_name}` on type `{$ty_str}`
 
 hir_typeck_no_associated_item = no {$item_kind} named `{$item_name}` found for {$ty_prefix} `{$ty_str}`{$trait_missing_method ->
@@ -108,8 +105,6 @@ hir_typeck_no_associated_item = no {$item_kind} named `{$item_name}` found for {
 
 hir_typeck_note_edition_guide = for more on editions, read https://doc.rust-lang.org/edition-guide
 
-hir_typeck_op_trait_generic_params = `{$method_name}` must not have any generic parameters
-
 hir_typeck_option_result_asref = use `{$def_path}::as_ref` to convert `{$expected_ty}` to `{$expr_ty}`
 hir_typeck_option_result_cloned = use `{$def_path}::cloned` to clone the value inside the `{$def_path}`
 hir_typeck_option_result_copied = use `{$def_path}::copied` to copy the value inside the `{$def_path}`

compiler/rustc_hir_typeck/src/callee.rs

@@ -77,6 +77,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                     callee_expr,
                     Expectation::NoExpectation,
                     arg_exprs,
+                    Some(call_expr),
                 ),
             _ => self.check_expr(callee_expr),
         };
@@ -253,28 +254,13 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                 adjusted_ty,
                 opt_input_type.as_ref().map(slice::from_ref),
             ) {
-                // Check for `self` receiver on the method, otherwise we can't use this as a `Fn*` trait.
-                if !self.tcx.associated_item(ok.value.def_id).fn_has_self_parameter {
-                    self.dcx().span_delayed_bug(
-                        call_expr.span,
-                        "input to overloaded call fn is not a self receiver",
-                    );
-                    return None;
-                }
-
                 let method = self.register_infer_ok_obligations(ok);
                 let mut autoref = None;
                 if borrow {
                     // Check for &self vs &mut self in the method signature. Since this is either
                     // the Fn or FnMut trait, it should be one of those.
                     let ty::Ref(region, _, mutbl) = method.sig.inputs()[0].kind() else {
-                        // The `fn`/`fn_mut` lang item is ill-formed, which should have
-                        // caused an error elsewhere.
-                        self.dcx().span_delayed_bug(
-                            call_expr.span,
-                            "input to call/call_mut is not a ref",
-                        );
-                        return None;
+                        bug!("Expected `FnMut`/`Fn` to take receiver by-ref/by-mut")
                     };
 
                     // For initial two-phase borrow
@@ -948,9 +934,11 @@ impl<'a, 'tcx> DeferredCallResolution<'tcx> {
                 );
             }
             None => {
-                // This can happen if `#![no_core]` is used and the `fn/fn_mut/fn_once`
-                // lang items are not defined (issue #86238).
-                fcx.dcx().emit_err(errors::MissingFnLangItems { span: self.call_expr.span });
+                span_bug!(
+                    self.call_expr.span,
+                    "Expected to find a suitable `Fn`/`FnMut`/`FnOnce` implementation for `{}`",
+                    self.adjusted_ty
+                )
             }
         }
     }

compiler/rustc_hir_typeck/src/check.rs

@@ -152,26 +152,22 @@ pub(super) fn check_fn<'a, 'tcx>(
 }
 
 fn check_panic_info_fn(tcx: TyCtxt<'_>, fn_id: LocalDefId, fn_sig: ty::FnSig<'_>) {
+    let span = tcx.def_span(fn_id);
+
     let DefKind::Fn = tcx.def_kind(fn_id) else {
-        let span = tcx.def_span(fn_id);
         tcx.dcx().span_err(span, "should be a function");
         return;
     };
 
     let generic_counts = tcx.generics_of(fn_id).own_counts();
     if generic_counts.types != 0 {
-        let span = tcx.def_span(fn_id);
         tcx.dcx().span_err(span, "should have no type parameters");
     }
     if generic_counts.consts != 0 {
-        let span = tcx.def_span(fn_id);
         tcx.dcx().span_err(span, "should have no const parameters");
     }
 
-    let Some(panic_info_did) = tcx.lang_items().panic_info() else {
-        tcx.dcx().err("language item required, but not found: `panic_info`");
-        return;
-    };
+    let panic_info_did = tcx.require_lang_item(hir::LangItem::PanicInfo, Some(span));
 
     // build type `for<'a, 'b> fn(&'a PanicInfo<'b>) -> !`
     let panic_info_ty = tcx.type_of(panic_info_did).instantiate(
@@ -203,11 +199,7 @@ fn check_panic_info_fn(tcx: TyCtxt<'_>, fn_id: LocalDefId, fn_sig: ty::FnSig<'_>
 
     let _ = check_function_signature(
         tcx,
-        ObligationCause::new(
-            tcx.def_span(fn_id),
-            fn_id,
-            ObligationCauseCode::LangFunctionType(sym::panic_impl),
-        ),
+        ObligationCause::new(span, fn_id, ObligationCauseCode::LangFunctionType(sym::panic_impl)),
         fn_id.into(),
         expected_sig,
     );

compiler/rustc_hir_typeck/src/errors.rs

@@ -83,14 +83,6 @@ pub struct MethodCallOnUnknownRawPointee {
     pub span: Span,
 }
 
-#[derive(Diagnostic)]
-#[diag(hir_typeck_missing_fn_lang_items)]
-#[help]
-pub struct MissingFnLangItems {
-    #[primary_span]
-    pub span: Span,
-}
-
 #[derive(Diagnostic)]
 #[diag(hir_typeck_functional_record_update_on_non_struct, code = E0436)]
 pub struct FunctionalRecordUpdateOnNonStruct {
@@ -193,14 +185,6 @@ pub struct AddMissingParenthesesInRange {
     pub right: Span,
 }
 
-#[derive(Diagnostic)]
-#[diag(hir_typeck_op_trait_generic_params)]
-pub struct OpMethodGenericParams {
-    #[primary_span]
-    pub span: Span,
-    pub method_name: String,
-}
-
 pub struct TypeMismatchFruTypo {
     /// Span of the LHS of the range
     pub expr_span: Span,