Auto merge of #120619 - compiler-errors:param, r=lcnr
Assert that params with the same *index* have the same *name* Found this bug when trying to build libcore with the new solver, since it will canonicalize two params with the same index into *different* placeholders if those params differ by name.
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commit
520b0b20aa
@ -12,7 +12,7 @@
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use rustc_hir as hir;
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use rustc_middle::traits::{ObligationCause, ObligationCauseCode};
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use rustc_middle::ty::{self, Ty, TyCtxt};
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use rustc_span::symbol::{kw, sym, Symbol};
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use rustc_span::symbol::{kw, sym};
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use rustc_target::spec::abi::Abi;
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fn equate_intrinsic_type<'tcx>(
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@ -133,7 +133,17 @@ pub fn intrinsic_operation_unsafety(tcx: TyCtxt<'_>, intrinsic_id: DefId) -> hir
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/// Remember to add all intrinsics here, in `compiler/rustc_codegen_llvm/src/intrinsic.rs`,
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/// and in `library/core/src/intrinsics.rs`.
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pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem<'_>) {
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let param = |n| Ty::new_param(tcx, n, Symbol::intern(&format!("P{n}")));
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let generics = tcx.generics_of(it.owner_id);
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let param = |n| {
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if let Some(&ty::GenericParamDef {
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name, kind: ty::GenericParamDefKind::Type { .. }, ..
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}) = generics.opt_param_at(n as usize, tcx)
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{
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Ty::new_param(tcx, n, name)
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} else {
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Ty::new_error_with_message(tcx, tcx.def_span(it.owner_id), "expected param")
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}
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};
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let intrinsic_id = it.owner_id.to_def_id();
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let intrinsic_name = tcx.item_name(intrinsic_id);
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let name_str = intrinsic_name.as_str();
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@ -478,9 +488,16 @@ pub fn check_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem<'_>) {
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/// Type-check `extern "platform-intrinsic" { ... }` functions.
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pub fn check_platform_intrinsic_type(tcx: TyCtxt<'_>, it: &hir::ForeignItem<'_>) {
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let generics = tcx.generics_of(it.owner_id);
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let param = |n| {
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let name = Symbol::intern(&format!("P{n}"));
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if let Some(&ty::GenericParamDef {
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name, kind: ty::GenericParamDefKind::Type { .. }, ..
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}) = generics.opt_param_at(n as usize, tcx)
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{
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Ty::new_param(tcx, n, name)
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} else {
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Ty::new_error_with_message(tcx, tcx.def_span(it.owner_id), "expected param")
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}
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};
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let name = it.ident.name;
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@ -435,7 +435,10 @@ pub fn structurally_relate_tys<'tcx, R: TypeRelation<'tcx>>(
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Ok(a)
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}
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(ty::Param(a_p), ty::Param(b_p)) if a_p.index == b_p.index => Ok(a),
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(ty::Param(a_p), ty::Param(b_p)) if a_p.index == b_p.index => {
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debug_assert_eq!(a_p.name, b_p.name, "param types with same index differ in name");
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Ok(a)
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}
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(ty::Placeholder(p1), ty::Placeholder(p2)) if p1 == p2 => Ok(a),
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@ -593,7 +596,10 @@ pub fn structurally_relate_consts<'tcx, R: TypeRelation<'tcx>>(
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(ty::ConstKind::Error(_), _) => return Ok(a),
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(_, ty::ConstKind::Error(_)) => return Ok(b),
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(ty::ConstKind::Param(a_p), ty::ConstKind::Param(b_p)) => a_p.index == b_p.index,
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(ty::ConstKind::Param(a_p), ty::ConstKind::Param(b_p)) if a_p.index == b_p.index => {
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debug_assert_eq!(a_p.name, b_p.name, "param types with same index differ in name");
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true
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}
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(ty::ConstKind::Placeholder(p1), ty::ConstKind::Placeholder(p2)) => p1 == p2,
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(ty::ConstKind::Value(a_val), ty::ConstKind::Value(b_val)) => a_val == b_val,
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@ -447,16 +447,13 @@ fn build_thread_local_shim<'tcx>(tcx: TyCtxt<'tcx>, instance: ty::InstanceDef<'t
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fn build_clone_shim<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId, self_ty: Ty<'tcx>) -> Body<'tcx> {
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debug!("build_clone_shim(def_id={:?})", def_id);
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let param_env = tcx.param_env_reveal_all_normalized(def_id);
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let mut builder = CloneShimBuilder::new(tcx, def_id, self_ty);
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let is_copy = self_ty.is_copy_modulo_regions(tcx, param_env);
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let dest = Place::return_place();
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let src = tcx.mk_place_deref(Place::from(Local::new(1 + 0)));
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match self_ty.kind() {
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_ if is_copy => builder.copy_shim(),
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ty::FnDef(..) | ty::FnPtr(_) => builder.copy_shim(),
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ty::Closure(_, args) => builder.tuple_like_shim(dest, src, args.as_closure().upvar_tys()),
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ty::Tuple(..) => builder.tuple_like_shim(dest, src, self_ty.tuple_fields()),
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ty::Coroutine(coroutine_def_id, args) => {
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@ -209,10 +209,8 @@ fn resolve_associated_item<'tcx>(
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let name = tcx.item_name(trait_item_id);
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if name == sym::clone {
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let self_ty = trait_ref.self_ty();
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let is_copy = self_ty.is_copy_modulo_regions(tcx, param_env);
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match self_ty.kind() {
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_ if is_copy => (),
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ty::FnDef(..) | ty::FnPtr(_) => (),
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ty::Coroutine(..)
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| ty::CoroutineWitness(..)
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| ty::Closure(..)
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@ -65,37 +65,49 @@ pub(crate) fn try_inline(
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let kind = match res {
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Res::Def(DefKind::Trait, did) => {
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record_extern_fqn(cx, did, ItemType::Trait);
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cx.with_param_env(did, |cx| {
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build_impls(cx, did, attrs_without_docs, &mut ret);
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clean::TraitItem(Box::new(build_external_trait(cx, did)))
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})
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}
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Res::Def(DefKind::Fn, did) => {
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record_extern_fqn(cx, did, ItemType::Function);
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clean::FunctionItem(build_external_function(cx, did))
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cx.with_param_env(did, |cx| clean::FunctionItem(build_external_function(cx, did)))
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}
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Res::Def(DefKind::Struct, did) => {
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record_extern_fqn(cx, did, ItemType::Struct);
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cx.with_param_env(did, |cx| {
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build_impls(cx, did, attrs_without_docs, &mut ret);
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clean::StructItem(build_struct(cx, did))
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})
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}
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Res::Def(DefKind::Union, did) => {
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record_extern_fqn(cx, did, ItemType::Union);
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cx.with_param_env(did, |cx| {
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build_impls(cx, did, attrs_without_docs, &mut ret);
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clean::UnionItem(build_union(cx, did))
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})
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}
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Res::Def(DefKind::TyAlias, did) => {
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record_extern_fqn(cx, did, ItemType::TypeAlias);
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cx.with_param_env(did, |cx| {
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build_impls(cx, did, attrs_without_docs, &mut ret);
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clean::TypeAliasItem(build_type_alias(cx, did, &mut ret))
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})
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}
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Res::Def(DefKind::Enum, did) => {
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record_extern_fqn(cx, did, ItemType::Enum);
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cx.with_param_env(did, |cx| {
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build_impls(cx, did, attrs_without_docs, &mut ret);
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clean::EnumItem(build_enum(cx, did))
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})
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}
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Res::Def(DefKind::ForeignTy, did) => {
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record_extern_fqn(cx, did, ItemType::ForeignType);
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cx.with_param_env(did, |cx| {
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build_impls(cx, did, attrs_without_docs, &mut ret);
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clean::ForeignTypeItem
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})
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}
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// Never inline enum variants but leave them shown as re-exports.
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Res::Def(DefKind::Variant, _) => return None,
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@ -108,11 +120,13 @@ pub(crate) fn try_inline(
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}
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Res::Def(DefKind::Static(_), did) => {
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record_extern_fqn(cx, did, ItemType::Static);
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cx.with_param_env(did, |cx| {
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clean::StaticItem(build_static(cx, did, cx.tcx.is_mutable_static(did)))
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})
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}
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Res::Def(DefKind::Const, did) => {
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record_extern_fqn(cx, did, ItemType::Constant);
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clean::ConstantItem(build_const(cx, did))
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cx.with_param_env(did, |cx| clean::ConstantItem(build_const(cx, did)))
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}
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Res::Def(DefKind::Macro(kind), did) => {
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let mac = build_macro(cx, did, name, import_def_id, kind);
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@ -334,7 +348,9 @@ pub(crate) fn build_impls(
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// for each implementation of an item represented by `did`, build the clean::Item for that impl
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for &did in tcx.inherent_impls(did).into_iter().flatten() {
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cx.with_param_env(did, |cx| {
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build_impl(cx, did, attrs, ret);
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});
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}
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// This pretty much exists expressly for `dyn Error` traits that exist in the `alloc` crate.
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@ -347,7 +363,9 @@ pub(crate) fn build_impls(
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let type_ =
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if tcx.is_trait(did) { SimplifiedType::Trait(did) } else { SimplifiedType::Adt(did) };
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for &did in tcx.incoherent_impls(type_).into_iter().flatten() {
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cx.with_param_env(did, |cx| {
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build_impl(cx, did, attrs, ret);
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});
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}
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}
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}
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@ -549,7 +567,9 @@ pub(crate) fn build_impl(
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}
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if let Some(did) = trait_.as_ref().map(|t| t.def_id()) {
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cx.with_param_env(did, |cx| {
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record_extern_trait(cx, did);
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});
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}
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let (merged_attrs, cfg) = merge_attrs(cx, load_attrs(cx, did), attrs);
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@ -947,7 +947,9 @@ fn clean_ty_alias_inner_type<'tcx>(
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};
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if !adt_def.did().is_local() {
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cx.with_param_env(adt_def.did(), |cx| {
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inline::build_impls(cx, adt_def.did(), None, ret);
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});
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}
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Some(if adt_def.is_enum() {
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@ -295,12 +295,16 @@ pub(crate) fn build_deref_target_impls(
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if let Some(prim) = target.primitive_type() {
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let _prof_timer = tcx.sess.prof.generic_activity("build_primitive_inherent_impls");
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for did in prim.impls(tcx).filter(|did| !did.is_local()) {
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cx.with_param_env(did, |cx| {
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inline::build_impl(cx, did, None, ret);
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});
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}
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} else if let Type::Path { path } = target {
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let did = path.def_id();
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if !did.is_local() {
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cx.with_param_env(did, |cx| {
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inline::build_impls(cx, did, None, ret);
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});
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}
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}
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}
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@ -49,7 +49,9 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
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let _prof_timer = tcx.sess.prof.generic_activity("build_extern_trait_impls");
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for &cnum in tcx.crates(()) {
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for &impl_def_id in tcx.trait_impls_in_crate(cnum) {
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cx.with_param_env(impl_def_id, |cx| {
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inline::build_impl(cx, impl_def_id, None, &mut new_items_external);
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});
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}
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}
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}
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@ -74,7 +76,9 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
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);
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parent = tcx.opt_parent(did);
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}
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cx.with_param_env(impl_def_id, |cx| {
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inline::build_impl(cx, impl_def_id, Some((&attr_buf, None)), &mut new_items_local);
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});
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attr_buf.clear();
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}
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}
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@ -83,7 +87,9 @@ pub(crate) fn collect_trait_impls(mut krate: Crate, cx: &mut DocContext<'_>) ->
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for def_id in PrimitiveType::all_impls(tcx) {
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// Try to inline primitive impls from other crates.
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if !def_id.is_local() {
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cx.with_param_env(def_id, |cx| {
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inline::build_impl(cx, def_id, None, &mut new_items_external);
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});
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}
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}
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for (prim, did) in PrimitiveType::primitive_locations(tcx) {
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@ -131,7 +131,7 @@ fn check_block(&mut self, cx: &LateContext<'tcx>, block: &Block<'tcx>) {
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// only when assigning `... = Default::default()`
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&& is_expr_default(expr, cx)
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&& let binding_type = cx.typeck_results().node_type(binding_id)
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&& let Some(adt) = binding_type.ty_adt_def()
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&& let ty::Adt(adt, args) = *binding_type.kind()
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&& adt.is_struct()
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&& let variant = adt.non_enum_variant()
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&& (adt.did().is_local() || !variant.is_field_list_non_exhaustive())
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@ -144,7 +144,7 @@ fn check_block(&mut self, cx: &LateContext<'tcx>, block: &Block<'tcx>) {
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.fields
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.iter()
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.all(|field| {
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is_copy(cx, cx.tcx.type_of(field.did).instantiate_identity())
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is_copy(cx, cx.tcx.type_of(field.did).instantiate(cx.tcx, args))
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})
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&& (!has_drop(cx, binding_type) || all_fields_are_copy)
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{
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@ -86,7 +86,6 @@ fn into_iter_bound<'tcx>(
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param_index: u32,
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node_args: GenericArgsRef<'tcx>,
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) -> Option<Span> {
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let param_env = cx.tcx.param_env(fn_did);
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let mut into_iter_span = None;
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for (pred, span) in cx.tcx.explicit_predicates_of(fn_did).predicates {
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@ -111,7 +110,7 @@ fn into_iter_bound<'tcx>(
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}));
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let predicate = EarlyBinder::bind(tr).instantiate(cx.tcx, args);
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let obligation = Obligation::new(cx.tcx, ObligationCause::dummy(), param_env, predicate);
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let obligation = Obligation::new(cx.tcx, ObligationCause::dummy(), cx.param_env, predicate);
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if !cx
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.tcx
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.infer_ctxt()
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