1 //! Collects lang items: items marked with `#[lang = "..."]` attribute.
2 //!
3 //! This attribute to tell the compiler about semi built-in std library
4 //! features, such as Fn family of traits.
5 use rustc_hash::FxHashMap;
6 use syntax::SmolStr;
7 use triomphe::Arc;
8
9 use crate::{
10 db::DefDatabase, path::Path, AdtId, AssocItemId, AttrDefId, CrateId, EnumId, EnumVariantId,
11 FunctionId, ImplId, ModuleDefId, StaticId, StructId, TraitId, TypeAliasId, UnionId,
12 };
13
14 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
15 pub enum LangItemTarget {
16 EnumId(EnumId),
17 Function(FunctionId),
18 ImplDef(ImplId),
19 Static(StaticId),
20 Struct(StructId),
21 Union(UnionId),
22 TypeAlias(TypeAliasId),
23 Trait(TraitId),
24 EnumVariant(EnumVariantId),
25 }
26
27 impl LangItemTarget {
as_enum(self) -> Option<EnumId>28 pub fn as_enum(self) -> Option<EnumId> {
29 match self {
30 LangItemTarget::EnumId(id) => Some(id),
31 _ => None,
32 }
33 }
34
as_function(self) -> Option<FunctionId>35 pub fn as_function(self) -> Option<FunctionId> {
36 match self {
37 LangItemTarget::Function(id) => Some(id),
38 _ => None,
39 }
40 }
41
as_impl_def(self) -> Option<ImplId>42 pub fn as_impl_def(self) -> Option<ImplId> {
43 match self {
44 LangItemTarget::ImplDef(id) => Some(id),
45 _ => None,
46 }
47 }
48
as_static(self) -> Option<StaticId>49 pub fn as_static(self) -> Option<StaticId> {
50 match self {
51 LangItemTarget::Static(id) => Some(id),
52 _ => None,
53 }
54 }
55
as_struct(self) -> Option<StructId>56 pub fn as_struct(self) -> Option<StructId> {
57 match self {
58 LangItemTarget::Struct(id) => Some(id),
59 _ => None,
60 }
61 }
62
as_trait(self) -> Option<TraitId>63 pub fn as_trait(self) -> Option<TraitId> {
64 match self {
65 LangItemTarget::Trait(id) => Some(id),
66 _ => None,
67 }
68 }
69
as_enum_variant(self) -> Option<EnumVariantId>70 pub fn as_enum_variant(self) -> Option<EnumVariantId> {
71 match self {
72 LangItemTarget::EnumVariant(id) => Some(id),
73 _ => None,
74 }
75 }
76 }
77
78 #[derive(Default, Debug, Clone, PartialEq, Eq)]
79 pub struct LangItems {
80 items: FxHashMap<LangItem, LangItemTarget>,
81 }
82
83 impl LangItems {
target(&self, item: LangItem) -> Option<LangItemTarget>84 pub fn target(&self, item: LangItem) -> Option<LangItemTarget> {
85 self.items.get(&item).copied()
86 }
87
88 /// Salsa query. This will look for lang items in a specific crate.
crate_lang_items_query(db: &dyn DefDatabase, krate: CrateId) -> Arc<LangItems>89 pub(crate) fn crate_lang_items_query(db: &dyn DefDatabase, krate: CrateId) -> Arc<LangItems> {
90 let _p = profile::span("crate_lang_items_query");
91
92 let mut lang_items = LangItems::default();
93
94 let crate_def_map = db.crate_def_map(krate);
95
96 for (_, module_data) in crate_def_map.modules() {
97 for impl_def in module_data.scope.impls() {
98 lang_items.collect_lang_item(db, impl_def, LangItemTarget::ImplDef);
99 for assoc in db.impl_data(impl_def).items.iter().copied() {
100 match assoc {
101 AssocItemId::FunctionId(f) => {
102 lang_items.collect_lang_item(db, f, LangItemTarget::Function)
103 }
104 AssocItemId::TypeAliasId(t) => {
105 lang_items.collect_lang_item(db, t, LangItemTarget::TypeAlias)
106 }
107 AssocItemId::ConstId(_) => (),
108 }
109 }
110 }
111
112 for def in module_data.scope.declarations() {
113 match def {
114 ModuleDefId::TraitId(trait_) => {
115 lang_items.collect_lang_item(db, trait_, LangItemTarget::Trait);
116 db.trait_data(trait_).items.iter().for_each(|&(_, assoc_id)| {
117 if let AssocItemId::FunctionId(f) = assoc_id {
118 lang_items.collect_lang_item(db, f, LangItemTarget::Function);
119 }
120 });
121 }
122 ModuleDefId::AdtId(AdtId::EnumId(e)) => {
123 lang_items.collect_lang_item(db, e, LangItemTarget::EnumId);
124 db.enum_data(e).variants.iter().for_each(|(local_id, _)| {
125 lang_items.collect_lang_item(
126 db,
127 EnumVariantId { parent: e, local_id },
128 LangItemTarget::EnumVariant,
129 );
130 });
131 }
132 ModuleDefId::AdtId(AdtId::StructId(s)) => {
133 lang_items.collect_lang_item(db, s, LangItemTarget::Struct);
134 }
135 ModuleDefId::AdtId(AdtId::UnionId(u)) => {
136 lang_items.collect_lang_item(db, u, LangItemTarget::Union);
137 }
138 ModuleDefId::FunctionId(f) => {
139 lang_items.collect_lang_item(db, f, LangItemTarget::Function);
140 }
141 ModuleDefId::StaticId(s) => {
142 lang_items.collect_lang_item(db, s, LangItemTarget::Static);
143 }
144 ModuleDefId::TypeAliasId(t) => {
145 lang_items.collect_lang_item(db, t, LangItemTarget::TypeAlias);
146 }
147 _ => {}
148 }
149 }
150 }
151
152 Arc::new(lang_items)
153 }
154
155 /// Salsa query. Look for a lang item, starting from the specified crate and recursively
156 /// traversing its dependencies.
lang_item_query( db: &dyn DefDatabase, start_crate: CrateId, item: LangItem, ) -> Option<LangItemTarget>157 pub(crate) fn lang_item_query(
158 db: &dyn DefDatabase,
159 start_crate: CrateId,
160 item: LangItem,
161 ) -> Option<LangItemTarget> {
162 let _p = profile::span("lang_item_query");
163 let lang_items = db.crate_lang_items(start_crate);
164 let start_crate_target = lang_items.items.get(&item);
165 if let Some(&target) = start_crate_target {
166 return Some(target);
167 }
168 db.crate_graph()[start_crate]
169 .dependencies
170 .iter()
171 .find_map(|dep| db.lang_item(dep.crate_id, item))
172 }
173
collect_lang_item<T>( &mut self, db: &dyn DefDatabase, item: T, constructor: fn(T) -> LangItemTarget, ) where T: Into<AttrDefId> + Copy,174 fn collect_lang_item<T>(
175 &mut self,
176 db: &dyn DefDatabase,
177 item: T,
178 constructor: fn(T) -> LangItemTarget,
179 ) where
180 T: Into<AttrDefId> + Copy,
181 {
182 let _p = profile::span("collect_lang_item");
183 if let Some(lang_item) = lang_attr(db, item) {
184 self.items.entry(lang_item).or_insert_with(|| constructor(item));
185 }
186 }
187 }
188
lang_attr(db: &dyn DefDatabase, item: impl Into<AttrDefId> + Copy) -> Option<LangItem>189 pub fn lang_attr(db: &dyn DefDatabase, item: impl Into<AttrDefId> + Copy) -> Option<LangItem> {
190 let attrs = db.attrs(item.into());
191 attrs.by_key("lang").string_value().cloned().and_then(|it| LangItem::from_str(&it))
192 }
193
194 pub enum GenericRequirement {
195 None,
196 Minimum(usize),
197 Exact(usize),
198 }
199
200 macro_rules! language_item_table {
201 (
202 $( $(#[$attr:meta])* $variant:ident, $module:ident :: $name:ident, $method:ident, $target:expr, $generics:expr; )*
203 ) => {
204
205 /// A representation of all the valid language items in Rust.
206 #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
207 pub enum LangItem {
208 $(
209 #[doc = concat!("The `", stringify!($name), "` lang item.")]
210 $(#[$attr])*
211 $variant,
212 )*
213 }
214
215 impl LangItem {
216 pub fn name(self) -> SmolStr {
217 match self {
218 $( LangItem::$variant => SmolStr::new(stringify!($name)), )*
219 }
220 }
221
222 /// Opposite of [`LangItem::name`]
223 pub fn from_str(name: &str) -> Option<Self> {
224 match name {
225 $( stringify!($name) => Some(LangItem::$variant), )*
226 _ => None,
227 }
228 }
229 }
230 }
231 }
232
233 impl LangItem {
234 /// Opposite of [`LangItem::name`]
from_name(name: &hir_expand::name::Name) -> Option<Self>235 pub fn from_name(name: &hir_expand::name::Name) -> Option<Self> {
236 Self::from_str(name.as_str()?)
237 }
238
path(&self, db: &dyn DefDatabase, start_crate: CrateId) -> Option<Path>239 pub fn path(&self, db: &dyn DefDatabase, start_crate: CrateId) -> Option<Path> {
240 let t = db.lang_item(start_crate, *self)?;
241 Some(Path::LangItem(t))
242 }
243 }
244
245 language_item_table! {
246 // Variant name, Name, Getter method name, Target Generic requirements;
247 Sized, sym::sized, sized_trait, Target::Trait, GenericRequirement::Exact(0);
248 Unsize, sym::unsize, unsize_trait, Target::Trait, GenericRequirement::Minimum(1);
249 /// Trait injected by `#[derive(PartialEq)]`, (i.e. "Partial EQ").
250 StructuralPeq, sym::structural_peq, structural_peq_trait, Target::Trait, GenericRequirement::None;
251 /// Trait injected by `#[derive(Eq)]`, (i.e. "Total EQ"; no, I will not apologize).
252 StructuralTeq, sym::structural_teq, structural_teq_trait, Target::Trait, GenericRequirement::None;
253 Copy, sym::copy, copy_trait, Target::Trait, GenericRequirement::Exact(0);
254 Clone, sym::clone, clone_trait, Target::Trait, GenericRequirement::None;
255 Sync, sym::sync, sync_trait, Target::Trait, GenericRequirement::Exact(0);
256 DiscriminantKind, sym::discriminant_kind, discriminant_kind_trait, Target::Trait, GenericRequirement::None;
257 /// The associated item of the [`DiscriminantKind`] trait.
258 Discriminant, sym::discriminant_type, discriminant_type, Target::AssocTy, GenericRequirement::None;
259
260 PointeeTrait, sym::pointee_trait, pointee_trait, Target::Trait, GenericRequirement::None;
261 Metadata, sym::metadata_type, metadata_type, Target::AssocTy, GenericRequirement::None;
262 DynMetadata, sym::dyn_metadata, dyn_metadata, Target::Struct, GenericRequirement::None;
263
264 Freeze, sym::freeze, freeze_trait, Target::Trait, GenericRequirement::Exact(0);
265
266 FnPtrTrait, sym::fn_ptr_trait, fn_ptr_trait, Target::Trait, GenericRequirement::Exact(0);
267 FnPtrAddr, sym::fn_ptr_addr, fn_ptr_addr, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
268
269 Drop, sym::drop, drop_trait, Target::Trait, GenericRequirement::None;
270 Destruct, sym::destruct, destruct_trait, Target::Trait, GenericRequirement::None;
271
272 CoerceUnsized, sym::coerce_unsized, coerce_unsized_trait, Target::Trait, GenericRequirement::Minimum(1);
273 DispatchFromDyn, sym::dispatch_from_dyn, dispatch_from_dyn_trait, Target::Trait, GenericRequirement::Minimum(1);
274
275 // language items relating to transmutability
276 TransmuteOpts, sym::transmute_opts, transmute_opts, Target::Struct, GenericRequirement::Exact(0);
277 TransmuteTrait, sym::transmute_trait, transmute_trait, Target::Trait, GenericRequirement::Exact(3);
278
279 Add, sym::add, add_trait, Target::Trait, GenericRequirement::Exact(1);
280 Sub, sym::sub, sub_trait, Target::Trait, GenericRequirement::Exact(1);
281 Mul, sym::mul, mul_trait, Target::Trait, GenericRequirement::Exact(1);
282 Div, sym::div, div_trait, Target::Trait, GenericRequirement::Exact(1);
283 Rem, sym::rem, rem_trait, Target::Trait, GenericRequirement::Exact(1);
284 Neg, sym::neg, neg_trait, Target::Trait, GenericRequirement::Exact(0);
285 Not, sym::not, not_trait, Target::Trait, GenericRequirement::Exact(0);
286 BitXor, sym::bitxor, bitxor_trait, Target::Trait, GenericRequirement::Exact(1);
287 BitAnd, sym::bitand, bitand_trait, Target::Trait, GenericRequirement::Exact(1);
288 BitOr, sym::bitor, bitor_trait, Target::Trait, GenericRequirement::Exact(1);
289 Shl, sym::shl, shl_trait, Target::Trait, GenericRequirement::Exact(1);
290 Shr, sym::shr, shr_trait, Target::Trait, GenericRequirement::Exact(1);
291 AddAssign, sym::add_assign, add_assign_trait, Target::Trait, GenericRequirement::Exact(1);
292 SubAssign, sym::sub_assign, sub_assign_trait, Target::Trait, GenericRequirement::Exact(1);
293 MulAssign, sym::mul_assign, mul_assign_trait, Target::Trait, GenericRequirement::Exact(1);
294 DivAssign, sym::div_assign, div_assign_trait, Target::Trait, GenericRequirement::Exact(1);
295 RemAssign, sym::rem_assign, rem_assign_trait, Target::Trait, GenericRequirement::Exact(1);
296 BitXorAssign, sym::bitxor_assign, bitxor_assign_trait, Target::Trait, GenericRequirement::Exact(1);
297 BitAndAssign, sym::bitand_assign, bitand_assign_trait, Target::Trait, GenericRequirement::Exact(1);
298 BitOrAssign, sym::bitor_assign, bitor_assign_trait, Target::Trait, GenericRequirement::Exact(1);
299 ShlAssign, sym::shl_assign, shl_assign_trait, Target::Trait, GenericRequirement::Exact(1);
300 ShrAssign, sym::shr_assign, shr_assign_trait, Target::Trait, GenericRequirement::Exact(1);
301 Index, sym::index, index_trait, Target::Trait, GenericRequirement::Exact(1);
302 IndexMut, sym::index_mut, index_mut_trait, Target::Trait, GenericRequirement::Exact(1);
303
304 UnsafeCell, sym::unsafe_cell, unsafe_cell_type, Target::Struct, GenericRequirement::None;
305 VaList, sym::va_list, va_list, Target::Struct, GenericRequirement::None;
306
307 Deref, sym::deref, deref_trait, Target::Trait, GenericRequirement::Exact(0);
308 DerefMut, sym::deref_mut, deref_mut_trait, Target::Trait, GenericRequirement::Exact(0);
309 DerefTarget, sym::deref_target, deref_target, Target::AssocTy, GenericRequirement::None;
310 Receiver, sym::receiver, receiver_trait, Target::Trait, GenericRequirement::None;
311
312 Fn, kw::fn, fn_trait, Target::Trait, GenericRequirement::Exact(1);
313 FnMut, sym::fn_mut, fn_mut_trait, Target::Trait, GenericRequirement::Exact(1);
314 FnOnce, sym::fn_once, fn_once_trait, Target::Trait, GenericRequirement::Exact(1);
315
316 FnOnceOutput, sym::fn_once_output, fn_once_output, Target::AssocTy, GenericRequirement::None;
317
318 Future, sym::future_trait, future_trait, Target::Trait, GenericRequirement::Exact(0);
319 GeneratorState, sym::generator_state, gen_state, Target::Enum, GenericRequirement::None;
320 Generator, sym::generator, gen_trait, Target::Trait, GenericRequirement::Minimum(1);
321 Unpin, sym::unpin, unpin_trait, Target::Trait, GenericRequirement::None;
322 Pin, sym::pin, pin_type, Target::Struct, GenericRequirement::None;
323
324 PartialEq, sym::eq, eq_trait, Target::Trait, GenericRequirement::Exact(1);
325 PartialOrd, sym::partial_ord, partial_ord_trait, Target::Trait, GenericRequirement::Exact(1);
326 CVoid, sym::c_void, c_void, Target::Enum, GenericRequirement::None;
327
328 // A number of panic-related lang items. The `panic` item corresponds to divide-by-zero and
329 // various panic cases with `match`. The `panic_bounds_check` item is for indexing arrays.
330 //
331 // The `begin_unwind` lang item has a predefined symbol name and is sort of a "weak lang item"
332 // in the sense that a crate is not required to have it defined to use it, but a final product
333 // is required to define it somewhere. Additionally, there are restrictions on crates that use
334 // a weak lang item, but do not have it defined.
335 Panic, sym::panic, panic_fn, Target::Fn, GenericRequirement::Exact(0);
336 PanicNounwind, sym::panic_nounwind, panic_nounwind, Target::Fn, GenericRequirement::Exact(0);
337 PanicFmt, sym::panic_fmt, panic_fmt, Target::Fn, GenericRequirement::None;
338 PanicDisplay, sym::panic_display, panic_display, Target::Fn, GenericRequirement::None;
339 ConstPanicFmt, sym::const_panic_fmt, const_panic_fmt, Target::Fn, GenericRequirement::None;
340 PanicBoundsCheck, sym::panic_bounds_check, panic_bounds_check_fn, Target::Fn, GenericRequirement::Exact(0);
341 PanicMisalignedPointerDereference, sym::panic_misaligned_pointer_dereference, panic_misaligned_pointer_dereference_fn, Target::Fn, GenericRequirement::Exact(0);
342 PanicInfo, sym::panic_info, panic_info, Target::Struct, GenericRequirement::None;
343 PanicLocation, sym::panic_location, panic_location, Target::Struct, GenericRequirement::None;
344 PanicImpl, sym::panic_impl, panic_impl, Target::Fn, GenericRequirement::None;
345 PanicCannotUnwind, sym::panic_cannot_unwind, panic_cannot_unwind, Target::Fn, GenericRequirement::Exact(0);
346 /// libstd panic entry point. Necessary for const eval to be able to catch it
347 BeginPanic, sym::begin_panic, begin_panic_fn, Target::Fn, GenericRequirement::None;
348
349 // Lang items needed for `format_args!()`.
350 FormatAlignment, sym::format_alignment, format_alignment, Target::Enum, GenericRequirement::None;
351 FormatArgument, sym::format_argument, format_argument, Target::Struct, GenericRequirement::None;
352 FormatArguments, sym::format_arguments, format_arguments, Target::Struct, GenericRequirement::None;
353 FormatCount, sym::format_count, format_count, Target::Enum, GenericRequirement::None;
354 FormatPlaceholder, sym::format_placeholder, format_placeholder, Target::Struct, GenericRequirement::None;
355 FormatUnsafeArg, sym::format_unsafe_arg, format_unsafe_arg, Target::Struct, GenericRequirement::None;
356
357 ExchangeMalloc, sym::exchange_malloc, exchange_malloc_fn, Target::Fn, GenericRequirement::None;
358 BoxFree, sym::box_free, box_free_fn, Target::Fn, GenericRequirement::Minimum(1);
359 DropInPlace, sym::drop_in_place, drop_in_place_fn, Target::Fn, GenericRequirement::Minimum(1);
360 AllocLayout, sym::alloc_layout, alloc_layout, Target::Struct, GenericRequirement::None;
361
362 Start, sym::start, start_fn, Target::Fn, GenericRequirement::Exact(1);
363
364 EhPersonality, sym::eh_personality, eh_personality, Target::Fn, GenericRequirement::None;
365 EhCatchTypeinfo, sym::eh_catch_typeinfo, eh_catch_typeinfo, Target::Static, GenericRequirement::None;
366
367 OwnedBox, sym::owned_box, owned_box, Target::Struct, GenericRequirement::Minimum(1);
368
369 PhantomData, sym::phantom_data, phantom_data, Target::Struct, GenericRequirement::Exact(1);
370
371 ManuallyDrop, sym::manually_drop, manually_drop, Target::Struct, GenericRequirement::None;
372
373 MaybeUninit, sym::maybe_uninit, maybe_uninit, Target::Union, GenericRequirement::None;
374
375 /// Align offset for stride != 1; must not panic.
376 AlignOffset, sym::align_offset, align_offset_fn, Target::Fn, GenericRequirement::None;
377
378 Termination, sym::termination, termination, Target::Trait, GenericRequirement::None;
379
380 Try, sym::Try, try_trait, Target::Trait, GenericRequirement::None;
381
382 Tuple, sym::tuple_trait, tuple_trait, Target::Trait, GenericRequirement::Exact(0);
383
384 SliceLen, sym::slice_len_fn, slice_len_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None;
385
386 // Language items from AST lowering
387 TryTraitFromResidual, sym::from_residual, from_residual_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
388 TryTraitFromOutput, sym::from_output, from_output_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
389 TryTraitBranch, sym::branch, branch_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
390 TryTraitFromYeet, sym::from_yeet, from_yeet_fn, Target::Fn, GenericRequirement::None;
391
392 PointerLike, sym::pointer_like, pointer_like, Target::Trait, GenericRequirement::Exact(0);
393
394 ConstParamTy, sym::const_param_ty, const_param_ty_trait, Target::Trait, GenericRequirement::Exact(0);
395
396 Poll, sym::Poll, poll, Target::Enum, GenericRequirement::None;
397 PollReady, sym::Ready, poll_ready_variant, Target::Variant, GenericRequirement::None;
398 PollPending, sym::Pending, poll_pending_variant, Target::Variant, GenericRequirement::None;
399
400 // FIXME(swatinem): the following lang items are used for async lowering and
401 // should become obsolete eventually.
402 ResumeTy, sym::ResumeTy, resume_ty, Target::Struct, GenericRequirement::None;
403 GetContext, sym::get_context, get_context_fn, Target::Fn, GenericRequirement::None;
404
405 Context, sym::Context, context, Target::Struct, GenericRequirement::None;
406 FuturePoll, sym::poll, future_poll_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
407
408 Option, sym::Option, option_type, Target::Enum, GenericRequirement::None;
409 OptionSome, sym::Some, option_some_variant, Target::Variant, GenericRequirement::None;
410 OptionNone, sym::None, option_none_variant, Target::Variant, GenericRequirement::None;
411
412 ResultOk, sym::Ok, result_ok_variant, Target::Variant, GenericRequirement::None;
413 ResultErr, sym::Err, result_err_variant, Target::Variant, GenericRequirement::None;
414
415 ControlFlowContinue, sym::Continue, cf_continue_variant, Target::Variant, GenericRequirement::None;
416 ControlFlowBreak, sym::Break, cf_break_variant, Target::Variant, GenericRequirement::None;
417
418 IntoFutureIntoFuture, sym::into_future, into_future_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
419 IntoIterIntoIter, sym::into_iter, into_iter_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None;
420 IteratorNext, sym::next, next_fn, Target::Method(MethodKind::Trait { body: false}), GenericRequirement::None;
421
422 PinNewUnchecked, sym::new_unchecked, new_unchecked_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None;
423
424 RangeFrom, sym::RangeFrom, range_from_struct, Target::Struct, GenericRequirement::None;
425 RangeFull, sym::RangeFull, range_full_struct, Target::Struct, GenericRequirement::None;
426 RangeInclusiveStruct, sym::RangeInclusive, range_inclusive_struct, Target::Struct, GenericRequirement::None;
427 RangeInclusiveNew, sym::range_inclusive_new, range_inclusive_new_method, Target::Method(MethodKind::Inherent), GenericRequirement::None;
428 Range, sym::Range, range_struct, Target::Struct, GenericRequirement::None;
429 RangeToInclusive, sym::RangeToInclusive, range_to_inclusive_struct, Target::Struct, GenericRequirement::None;
430 RangeTo, sym::RangeTo, range_to_struct, Target::Struct, GenericRequirement::None;
431
432 String, sym::String, string, Target::Struct, GenericRequirement::None;
433 CStr, sym::CStr, c_str, Target::Struct, GenericRequirement::None;
434 }
435