Rollup merge of #104469 - estebank:long-types, r=oli-obk

Make "long type" printing type aware and trim types in E0275

Instead of simple string cutting, use a custom printer to hide parts of long printed types.

On E0275, check for type length before printing.
This commit is contained in:
Matthias Krüger 2022-11-19 15:35:21 +01:00 committed by GitHub
commit 06707c073d
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24 changed files with 208 additions and 97 deletions

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@ -12,7 +12,12 @@
use rustc_target::spec::abi;
use std::borrow::Cow;
use std::collections::hash_map::DefaultHasher;
use std::fmt;
use std::hash::{Hash, Hasher};
use std::path::PathBuf;
use super::print::PrettyPrinter;
#[derive(Clone, Copy, Debug, PartialEq, Eq, TypeFoldable, TypeVisitable, Lift)]
pub struct ExpectedFound<T> {
@ -985,6 +990,38 @@ fn constrain_associated_type_structured_suggestion(
false
}
pub fn short_ty_string(self, ty: Ty<'tcx>) -> (String, Option<PathBuf>) {
let length_limit = 50;
let type_limit = 4;
let regular = FmtPrinter::new(self, hir::def::Namespace::TypeNS)
.pretty_print_type(ty)
.expect("could not write to `String`")
.into_buffer();
if regular.len() <= length_limit {
return (regular, None);
}
let short = FmtPrinter::new_with_limit(
self,
hir::def::Namespace::TypeNS,
rustc_session::Limit(type_limit),
)
.pretty_print_type(ty)
.expect("could not write to `String`")
.into_buffer();
if regular == short {
return (regular, None);
}
// Multiple types might be shortened in a single error, ensure we create a file for each.
let mut s = DefaultHasher::new();
ty.hash(&mut s);
let hash = s.finish();
let path = self.output_filenames(()).temp_path_ext(&format!("long-type-{hash}.txt"), None);
match std::fs::write(&path, &regular) {
Ok(_) => (short, Some(path)),
Err(_) => (regular, None),
}
}
fn format_generic_args(self, args: &[ty::GenericArg<'tcx>]) -> String {
FmtPrinter::new(self, hir::def::Namespace::TypeNS)
.path_generic_args(Ok, args)

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@ -276,28 +276,45 @@ pub fn has_polymorphic_mir_body(&self) -> bool {
}
}
fn fmt_instance(
f: &mut fmt::Formatter<'_>,
instance: &Instance<'_>,
type_length: rustc_session::Limit,
) -> fmt::Result {
ty::tls::with(|tcx| {
let substs = tcx.lift(instance.substs).expect("could not lift for printing");
let s = FmtPrinter::new_with_limit(tcx, Namespace::ValueNS, type_length)
.print_def_path(instance.def_id(), substs)?
.into_buffer();
f.write_str(&s)
})?;
match instance.def {
InstanceDef::Item(_) => Ok(()),
InstanceDef::VTableShim(_) => write!(f, " - shim(vtable)"),
InstanceDef::ReifyShim(_) => write!(f, " - shim(reify)"),
InstanceDef::Intrinsic(_) => write!(f, " - intrinsic"),
InstanceDef::Virtual(_, num) => write!(f, " - virtual#{}", num),
InstanceDef::FnPtrShim(_, ty) => write!(f, " - shim({})", ty),
InstanceDef::ClosureOnceShim { .. } => write!(f, " - shim"),
InstanceDef::DropGlue(_, None) => write!(f, " - shim(None)"),
InstanceDef::DropGlue(_, Some(ty)) => write!(f, " - shim(Some({}))", ty),
InstanceDef::CloneShim(_, ty) => write!(f, " - shim({})", ty),
}
}
pub struct ShortInstance<'a, 'tcx>(pub &'a Instance<'tcx>, pub usize);
impl<'a, 'tcx> fmt::Display for ShortInstance<'a, 'tcx> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fmt_instance(f, self.0, rustc_session::Limit(self.1))
}
}
impl<'tcx> fmt::Display for Instance<'tcx> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
ty::tls::with(|tcx| {
let substs = tcx.lift(self.substs).expect("could not lift for printing");
let s = FmtPrinter::new(tcx, Namespace::ValueNS)
.print_def_path(self.def_id(), substs)?
.into_buffer();
f.write_str(&s)
})?;
match self.def {
InstanceDef::Item(_) => Ok(()),
InstanceDef::VTableShim(_) => write!(f, " - shim(vtable)"),
InstanceDef::ReifyShim(_) => write!(f, " - shim(reify)"),
InstanceDef::Intrinsic(_) => write!(f, " - intrinsic"),
InstanceDef::Virtual(_, num) => write!(f, " - virtual#{}", num),
InstanceDef::FnPtrShim(_, ty) => write!(f, " - shim({})", ty),
InstanceDef::ClosureOnceShim { .. } => write!(f, " - shim"),
InstanceDef::DropGlue(_, None) => write!(f, " - shim(None)"),
InstanceDef::DropGlue(_, Some(ty)) => write!(f, " - shim(Some({}))", ty),
InstanceDef::CloneShim(_, ty) => write!(f, " - shim({})", ty),
}
ty::tls::with(|tcx| fmt_instance(f, self, tcx.type_length_limit()))
}
}

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@ -84,7 +84,7 @@
GeneratorInteriorTypeCause, GlobalCtxt, Lift, OnDiskCache, TyCtxt, TypeckResults, UserType,
UserTypeAnnotationIndex,
};
pub use self::instance::{Instance, InstanceDef};
pub use self::instance::{Instance, InstanceDef, ShortInstance};
pub use self::list::List;
pub use self::parameterized::ParameterizedOverTcx;
pub use self::rvalue_scopes::RvalueScopes;

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@ -13,6 +13,7 @@
use rustc_hir::definitions::{DefPathData, DefPathDataName, DisambiguatedDefPathData};
use rustc_session::config::TrimmedDefPaths;
use rustc_session::cstore::{ExternCrate, ExternCrateSource};
use rustc_session::Limit;
use rustc_span::symbol::{kw, Ident, Symbol};
use rustc_target::abi::Size;
use rustc_target::spec::abi::Abi;
@ -1583,6 +1584,8 @@ pub struct FmtPrinterData<'a, 'tcx> {
region_index: usize,
binder_depth: usize,
printed_type_count: usize,
type_length_limit: Limit,
truncated: bool,
pub region_highlight_mode: RegionHighlightMode<'tcx>,
@ -1605,6 +1608,10 @@ fn deref_mut(&mut self) -> &mut Self::Target {
impl<'a, 'tcx> FmtPrinter<'a, 'tcx> {
pub fn new(tcx: TyCtxt<'tcx>, ns: Namespace) -> Self {
Self::new_with_limit(tcx, ns, tcx.type_length_limit())
}
pub fn new_with_limit(tcx: TyCtxt<'tcx>, ns: Namespace, type_length_limit: Limit) -> Self {
FmtPrinter(Box::new(FmtPrinterData {
tcx,
// Estimated reasonable capacity to allocate upfront based on a few
@ -1617,6 +1624,8 @@ pub fn new(tcx: TyCtxt<'tcx>, ns: Namespace) -> Self {
region_index: 0,
binder_depth: 0,
printed_type_count: 0,
type_length_limit,
truncated: false,
region_highlight_mode: RegionHighlightMode::new(tcx),
ty_infer_name_resolver: None,
const_infer_name_resolver: None,
@ -1751,11 +1760,11 @@ fn print_region(self, region: ty::Region<'tcx>) -> Result<Self::Region, Self::Er
}
fn print_type(mut self, ty: Ty<'tcx>) -> Result<Self::Type, Self::Error> {
let type_length_limit = self.tcx.type_length_limit();
if type_length_limit.value_within_limit(self.printed_type_count) {
if self.type_length_limit.value_within_limit(self.printed_type_count) {
self.printed_type_count += 1;
self.pretty_print_type(ty)
} else {
self.truncated = true;
write!(self, "...")?;
Ok(self)
}

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@ -197,7 +197,6 @@
use rustc_session::Limit;
use rustc_span::source_map::{dummy_spanned, respan, Span, Spanned, DUMMY_SP};
use rustc_target::abi::Size;
use std::iter;
use std::ops::Range;
use std::path::PathBuf;
@ -541,29 +540,23 @@ fn collect_items_rec<'tcx>(
}
/// Format instance name that is already known to be too long for rustc.
/// Show only the first and last 32 characters to avoid blasting
/// Show only the first 2 types if it is longer than 32 characters to avoid blasting
/// the user's terminal with thousands of lines of type-name.
///
/// If the type name is longer than before+after, it will be written to a file.
fn shrunk_instance_name<'tcx>(
tcx: TyCtxt<'tcx>,
instance: &Instance<'tcx>,
before: usize,
after: usize,
) -> (String, Option<PathBuf>) {
let s = instance.to_string();
// Only use the shrunk version if it's really shorter.
// This also avoids the case where before and after slices overlap.
if s.chars().nth(before + after + 1).is_some() {
// An iterator of all byte positions including the end of the string.
let positions = || s.char_indices().map(|(i, _)| i).chain(iter::once(s.len()));
let shrunk = format!(
"{before}...{after}",
before = &s[..positions().nth(before).unwrap_or(s.len())],
after = &s[positions().rev().nth(after).unwrap_or(0)..],
);
if s.chars().nth(33).is_some() {
let shrunk = format!("{}", ty::ShortInstance(instance, 4));
if shrunk == s {
return (s, None);
}
let path = tcx.output_filenames(()).temp_path_ext("long-type.txt", None);
let written_to_path = std::fs::write(&path, s).ok().map(|_| path);
@ -599,7 +592,7 @@ fn check_recursion_limit<'tcx>(
if !recursion_limit.value_within_limit(adjusted_recursion_depth) {
let def_span = tcx.def_span(def_id);
let def_path_str = tcx.def_path_str(def_id);
let (shrunk, written_to_path) = shrunk_instance_name(tcx, &instance, 32, 32);
let (shrunk, written_to_path) = shrunk_instance_name(tcx, &instance);
let mut path = PathBuf::new();
let was_written = if written_to_path.is_some() {
path = written_to_path.unwrap();
@ -641,7 +634,7 @@ fn check_type_length_limit<'tcx>(tcx: TyCtxt<'tcx>, instance: Instance<'tcx>) {
//
// Bail out in these cases to avoid that bad user experience.
if !tcx.type_length_limit().value_within_limit(type_length) {
let (shrunk, written_to_path) = shrunk_instance_name(tcx, &instance, 32, 32);
let (shrunk, written_to_path) = shrunk_instance_name(tcx, &instance);
let span = tcx.def_span(instance.def_id());
let mut path = PathBuf::new();
let was_written = if written_to_path.is_some() {

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@ -22,6 +22,7 @@
MultiSpan, Style,
};
use rustc_hir as hir;
use rustc_hir::def::Namespace;
use rustc_hir::def_id::DefId;
use rustc_hir::intravisit::Visitor;
use rustc_hir::GenericParam;
@ -34,6 +35,7 @@
use rustc_middle::ty::abstract_const::NotConstEvaluatable;
use rustc_middle::ty::error::ExpectedFound;
use rustc_middle::ty::fold::{TypeFolder, TypeSuperFoldable};
use rustc_middle::ty::print::{FmtPrinter, Print};
use rustc_middle::ty::{
self, SubtypePredicate, ToPolyTraitRef, ToPredicate, TraitRef, Ty, TyCtxt, TypeFoldable,
TypeVisitable,
@ -109,7 +111,10 @@ fn report_overflow_error<T>(
suggest_increasing_limit: bool,
) -> !
where
T: fmt::Display + TypeFoldable<'tcx>;
T: fmt::Display
+ TypeFoldable<'tcx>
+ Print<'tcx, FmtPrinter<'tcx, 'tcx>, Output = FmtPrinter<'tcx, 'tcx>>,
<T as Print<'tcx, FmtPrinter<'tcx, 'tcx>>>::Error: std::fmt::Debug;
fn suggest_new_overflow_limit(&self, err: &mut Diagnostic);
@ -468,15 +473,31 @@ fn report_overflow_error<T>(
suggest_increasing_limit: bool,
) -> !
where
T: fmt::Display + TypeFoldable<'tcx>,
T: fmt::Display
+ TypeFoldable<'tcx>
+ Print<'tcx, FmtPrinter<'tcx, 'tcx>, Output = FmtPrinter<'tcx, 'tcx>>,
<T as Print<'tcx, FmtPrinter<'tcx, 'tcx>>>::Error: std::fmt::Debug,
{
let predicate = self.resolve_vars_if_possible(obligation.predicate.clone());
let mut pred_str = predicate.to_string();
if pred_str.len() > 50 {
// We don't need to save the type to a file, we will be talking about this type already
// in a separate note when we explain the obligation, so it will be available that way.
pred_str = predicate
.print(FmtPrinter::new_with_limit(
self.tcx,
Namespace::TypeNS,
rustc_session::Limit(6),
))
.unwrap()
.into_buffer();
}
let mut err = struct_span_err!(
self.tcx.sess,
obligation.cause.span,
E0275,
"overflow evaluating the requirement `{}`",
predicate
pred_str,
);
if suggest_increasing_limit {

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@ -2733,9 +2733,10 @@ fn note_obligation_cause_code<T>(
self.resolve_vars_if_possible(data.derived.parent_trait_pred);
parent_trait_pred.remap_constness_diag(param_env);
let parent_def_id = parent_trait_pred.def_id();
let (self_ty, file) =
self.tcx.short_ty_string(parent_trait_pred.skip_binder().self_ty());
let msg = format!(
"required for `{}` to implement `{}`",
parent_trait_pred.skip_binder().self_ty(),
"required for `{self_ty}` to implement `{}`",
parent_trait_pred.print_modifiers_and_trait_path()
);
let mut is_auto_trait = false;
@ -2764,6 +2765,12 @@ fn note_obligation_cause_code<T>(
_ => err.note(&msg),
};
if let Some(file) = file {
err.note(&format!(
"the full type name has been written to '{}'",
file.display(),
));
}
let mut parent_predicate = parent_trait_pred;
let mut data = &data.derived;
let mut count = 0;
@ -2804,11 +2811,18 @@ fn note_obligation_cause_code<T>(
count,
pluralize!(count)
));
let (self_ty, file) =
self.tcx.short_ty_string(parent_trait_pred.skip_binder().self_ty());
err.note(&format!(
"required for `{}` to implement `{}`",
parent_trait_pred.skip_binder().self_ty(),
"required for `{self_ty}` to implement `{}`",
parent_trait_pred.print_modifiers_and_trait_path()
));
if let Some(file) = file {
err.note(&format!(
"the full type name has been written to '{}'",
file.display(),
));
}
}
// #74711: avoid a stack overflow
ensure_sufficient_stack(|| {

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@ -42,6 +42,7 @@
use rustc_middle::ty::abstract_const::NotConstEvaluatable;
use rustc_middle::ty::fast_reject::{DeepRejectCtxt, TreatParams};
use rustc_middle::ty::fold::BottomUpFolder;
use rustc_middle::ty::print::{FmtPrinter, Print};
use rustc_middle::ty::relate::TypeRelation;
use rustc_middle::ty::SubstsRef;
use rustc_middle::ty::{self, EarlyBinder, PolyProjectionPredicate, ToPolyTraitRef, ToPredicate};
@ -1081,11 +1082,17 @@ fn add_depth<T: 'cx, I: Iterator<Item = &'cx mut Obligation<'tcx, T>>>(
it.for_each(|o| o.recursion_depth = cmp::max(min_depth, o.recursion_depth) + 1);
}
fn check_recursion_depth<T: Display + TypeFoldable<'tcx>>(
fn check_recursion_depth<T>(
&self,
depth: usize,
error_obligation: &Obligation<'tcx, T>,
) -> Result<(), OverflowError> {
) -> Result<(), OverflowError>
where
T: fmt::Display
+ TypeFoldable<'tcx>
+ Print<'tcx, FmtPrinter<'tcx, 'tcx>, Output = FmtPrinter<'tcx, 'tcx>>,
<T as Print<'tcx, FmtPrinter<'tcx, 'tcx>>>::Error: std::fmt::Debug,
{
if !self.infcx.tcx.recursion_limit().value_within_limit(depth) {
match self.query_mode {
TraitQueryMode::Standard => {
@ -1107,11 +1114,17 @@ fn check_recursion_depth<T: Display + TypeFoldable<'tcx>>(
/// The weird return type of this function allows it to be used with the `try` (`?`)
/// operator within certain functions.
#[inline(always)]
fn check_recursion_limit<T: Display + TypeFoldable<'tcx>, V: Display + TypeFoldable<'tcx>>(
fn check_recursion_limit<T: Display + TypeFoldable<'tcx>, V>(
&self,
obligation: &Obligation<'tcx, T>,
error_obligation: &Obligation<'tcx, V>,
) -> Result<(), OverflowError> {
) -> Result<(), OverflowError>
where
V: fmt::Display
+ TypeFoldable<'tcx>
+ Print<'tcx, FmtPrinter<'tcx, 'tcx>, Output = FmtPrinter<'tcx, 'tcx>>,
<V as Print<'tcx, FmtPrinter<'tcx, 'tcx>>>::Error: std::fmt::Debug,
{
self.check_recursion_depth(obligation.recursion_depth, error_obligation)
}

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@ -1,3 +1,4 @@
// normalize-stderr-test: "long-type-\d+" -> "long-type-hash"
trait Foo {}
struct Bar<T>(T);

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@ -1,15 +1,16 @@
error[E0275]: overflow evaluating the requirement `Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>: Foo`
--> $DIR/E0275.rs:5:33
error[E0275]: overflow evaluating the requirement `Bar<Bar<Bar<Bar<Bar<Bar<Bar<...>>>>>>>: Foo`
--> $DIR/E0275.rs:6:33
|
LL | impl<T> Foo for T where Bar<T>: Foo {}
| ^^^
|
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`E0275`)
note: required for `Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<Bar<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>` to implement `Foo`
--> $DIR/E0275.rs:5:9
note: required for `Bar<Bar<Bar<Bar<Bar<Bar<...>>>>>>` to implement `Foo`
--> $DIR/E0275.rs:6:9
|
LL | impl<T> Foo for T where Bar<T>: Foo {}
| ^^^ ^
= note: the full type name has been written to '$TEST_BUILD_DIR/error-codes/E0275/E0275.long-type-hash.txt'
= note: 127 redundant requirements hidden
= note: required for `Bar<T>` to implement `Foo`

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@ -1,4 +1,4 @@
error: reached the recursion limit while instantiating `function::<Option<Option<Option<...>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>`
error: reached the recursion limit while instantiating `function::<Option<Option<Option<Option<Option<...>>>>>>`
--> $DIR/infinite-instantiation.rs:22:9
|
LL | function(counter - 1, t.to_option());

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@ -1,3 +1,4 @@
// normalize-stderr-test: "long-type-\d+" -> "long-type-hash"
trait Foo {
fn answer(self);
}

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@ -1,5 +1,5 @@
error[E0392]: parameter `T` is never used
--> $DIR/issue-20413.rs:5:15
--> $DIR/issue-20413.rs:6:15
|
LL | struct NoData<T>;
| ^ unused parameter
@ -7,58 +7,63 @@ LL | struct NoData<T>;
= help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData`
= help: if you intended `T` to be a const parameter, use `const T: usize` instead
error[E0275]: overflow evaluating the requirement `NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>: Foo`
--> $DIR/issue-20413.rs:8:36
error[E0275]: overflow evaluating the requirement `NoData<NoData<NoData<NoData<NoData<NoData<NoData<...>>>>>>>: Foo`
--> $DIR/issue-20413.rs:9:36
|
LL | impl<T> Foo for T where NoData<T>: Foo {
| ^^^
|
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_20413`)
note: required for `NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<NoData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>` to implement `Foo`
--> $DIR/issue-20413.rs:8:9
note: required for `NoData<NoData<NoData<NoData<NoData<NoData<...>>>>>>` to implement `Foo`
--> $DIR/issue-20413.rs:9:9
|
LL | impl<T> Foo for T where NoData<T>: Foo {
| ^^^ ^
= note: the full type name has been written to '$TEST_BUILD_DIR/issues/issue-20413/issue-20413.long-type-hash.txt'
= note: 127 redundant requirements hidden
= note: required for `NoData<T>` to implement `Foo`
error[E0275]: overflow evaluating the requirement `EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>: Baz`
--> $DIR/issue-20413.rs:27:42
error[E0275]: overflow evaluating the requirement `EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<...>>>>>>>: Baz`
--> $DIR/issue-20413.rs:28:42
|
LL | impl<T> Bar for T where EvenLessData<T>: Baz {
| ^^^
|
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_20413`)
note: required for `AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>` to implement `Bar`
--> $DIR/issue-20413.rs:27:9
note: required for `AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<...>>>>>>` to implement `Bar`
--> $DIR/issue-20413.rs:28:9
|
LL | impl<T> Bar for T where EvenLessData<T>: Baz {
| ^^^ ^
note: required for `EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>` to implement `Baz`
--> $DIR/issue-20413.rs:34:9
= note: the full type name has been written to '$TEST_BUILD_DIR/issues/issue-20413/issue-20413.long-type-hash.txt'
note: required for `EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<...>>>>>>` to implement `Baz`
--> $DIR/issue-20413.rs:35:9
|
LL | impl<T> Baz for T where AlmostNoData<T>: Bar {
| ^^^ ^
= note: the full type name has been written to '$TEST_BUILD_DIR/issues/issue-20413/issue-20413.long-type-hash.txt'
= note: 126 redundant requirements hidden
= note: required for `EvenLessData<T>` to implement `Baz`
error[E0275]: overflow evaluating the requirement `AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>: Bar`
--> $DIR/issue-20413.rs:34:42
error[E0275]: overflow evaluating the requirement `AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<...>>>>>>>: Bar`
--> $DIR/issue-20413.rs:35:42
|
LL | impl<T> Baz for T where AlmostNoData<T>: Bar {
| ^^^
|
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_20413`)
note: required for `EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>` to implement `Baz`
--> $DIR/issue-20413.rs:34:9
note: required for `EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<...>>>>>>` to implement `Baz`
--> $DIR/issue-20413.rs:35:9
|
LL | impl<T> Baz for T where AlmostNoData<T>: Bar {
| ^^^ ^
note: required for `AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<T>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>` to implement `Bar`
--> $DIR/issue-20413.rs:27:9
= note: the full type name has been written to '$TEST_BUILD_DIR/issues/issue-20413/issue-20413.long-type-hash.txt'
note: required for `AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<AlmostNoData<EvenLessData<...>>>>>>` to implement `Bar`
--> $DIR/issue-20413.rs:28:9
|
LL | impl<T> Bar for T where EvenLessData<T>: Baz {
| ^^^ ^
= note: the full type name has been written to '$TEST_BUILD_DIR/issues/issue-20413/issue-20413.long-type-hash.txt'
= note: 126 redundant requirements hidden
= note: required for `AlmostNoData<T>` to implement `Bar`

View File

@ -9,7 +9,6 @@ note: `A::matches` defined here
|
LL | pub fn matches<F: Fn()>(&self, f: &F) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= note: the full type name has been written to '$TEST_BUILD_DIR/issues/issue-22638/issue-22638.long-type.txt'
error: aborting due to previous error

View File

@ -1,4 +1,4 @@
error: reached the recursion limit while instantiating `<(&(&(&(&(&(&(&(&(&(&(&(&(&(&(&(.....), ...), ...) as Foo>::recurse`
error: reached the recursion limit while instantiating `<(&(&(..., ...), ...), ...) as Foo>::recurse`
--> $DIR/issue-37311.rs:17:9
|
LL | (self, self).recurse();

View File

@ -1,4 +1,4 @@
error: reached the recursion limit while instantiating `rec::<&mut &mut &mut &mut &mut &... &mut &mut &mut &mut &mut Empty>`
error: reached the recursion limit while instantiating `rec::<&mut &mut &mut &mut &mut ...>`
--> $DIR/issue-67552.rs:29:9
|
LL | rec(identity(&mut it))

View File

@ -9,7 +9,7 @@ LL | generic::<Option<T>>();
= help: a `loop` may express intention better if this is on purpose
= note: `#[warn(unconditional_recursion)]` on by default
error: reached the recursion limit while instantiating `generic::<Option<Option<Option<O...>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>`
error: reached the recursion limit while instantiating `generic::<Option<Option<Option<Option<Option<...>>>>>>`
--> $DIR/issue-8727.rs:8:5
|
LL | generic::<Option<T>>();

View File

@ -1,6 +1,7 @@
// build-fail
// compile-flags: -Copt-level=0
//~^^ ERROR overflow evaluating the requirement
// normalize-stderr-test: "long-type-\d+" -> "long-type-hash"
//~^^^ ERROR overflow evaluating the requirement
fn main() {
let mut iter = 0u8..1;

View File

@ -1,5 +1,5 @@
warning: function cannot return without recursing
--> $DIR/issue-83150.rs:10:1
--> $DIR/issue-83150.rs:11:1
|
LL | fn func<T: Iterator<Item = u8>>(iter: &mut T) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
@ -12,9 +12,10 @@ LL | func(&mut iter.map(|x| x + 1))
error[E0275]: overflow evaluating the requirement `<std::ops::Range<u8> as Iterator>::Item`
|
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_83150`)
= note: required for `Map<&mut std::ops::Range<u8>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>` to implement `Iterator`
= note: required for `Map<&mut std::ops::Range<u8>, [closure@$DIR/issue-83150.rs:12:24: 12:27]>` to implement `Iterator`
= note: 64 redundant requirements hidden
= note: required for `&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut Map<&mut std::ops::Range<u8>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>, [closure@$DIR/issue-83150.rs:11:24: 11:27]>` to implement `Iterator`
= note: required for `&mut Map<&mut Map<&mut Map<..., ...>, ...>, ...>` to implement `Iterator`
= note: the full type name has been written to '$TEST_BUILD_DIR/recursion/issue-83150/issue-83150.long-type-hash.txt'
error: aborting due to previous error; 1 warning emitted

View File

@ -1,4 +1,4 @@
error: reached the recursion limit while instantiating `test::<Cons<Cons<Cons<Cons<Cons<...>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>`
error: reached the recursion limit while instantiating `test::<Cons<Cons<Cons<Cons<Cons<...>>>>>>`
--> $DIR/recursion.rs:18:11
|
LL | _ => {test (n-1, i+1, Cons {head:2*i+1, tail:first}, Cons{head:i*i, tail:second})}

View File

@ -2,6 +2,7 @@
// compile-flags: -Zinline-mir=no
// error-pattern: overflow evaluating the requirement `(): Sized`
// error-pattern: function cannot return without recursing
// normalize-stderr-test: "long-type-\d+" -> "long-type-hash"
// Regression test for #91949.
// This hanged *forever* on 1.56, fixed by #90423.

File diff suppressed because one or more lines are too long

View File

@ -7,7 +7,7 @@
// The exact type depends on optimizations, so disable them.
#![allow(dead_code)]
#![type_length_limit="4"]
#![type_length_limit="8"]
macro_rules! link {
($id:ident, $t:ty) => {
@ -15,14 +15,19 @@ macro_rules! link {
}
}
link! { A1, B1 }
link! { B1, C1 }
link! { C1, D1 }
link! { D1, E1 }
link! { E1, A }
link! { A, B }
link! { B, C }
link! { C, D }
link! { D, E }
link! { E, F }
link! { F, G }
link! { F, G<Option<i32>, Option<i32>> }
pub struct G;
pub struct G<T, K>(std::marker::PhantomData::<(T, K)>);
fn main() {
drop::<Option<A>>(None);

View File

@ -1,20 +1,11 @@
error: reached the type-length limit while instantiating `std::mem::drop::<Option<((((...,....., ...), ..., ...), ..., ...)>>`
error: reached the type-length limit while instantiating `std::mem::drop::<Option<((((..., ..., ...), ..., ...), ..., ...), ..., ...)>>`
--> $SRC_DIR/core/src/mem/mod.rs:LL:COL
|
LL | pub fn drop<T>(_x: T) {}
| ^^^^^^^^^^^^^^^^^^^^^
|
= help: consider adding a `#![type_length_limit="8"]` attribute to your crate
= help: consider adding a `#![type_length_limit="10"]` attribute to your crate
= note: the full type name has been written to '$TEST_BUILD_DIR/type_length_limit/type_length_limit.long-type.txt'
error: reached the type-length limit while instantiating `<[closure@std::rt::lang_start<()...e<()>>::call_once - shim(vtable)`
--> $SRC_DIR/core/src/ops/function.rs:LL:COL
|
LL | extern "rust-call" fn call_once(self, args: Args) -> Self::Output;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: consider adding a `#![type_length_limit="8"]` attribute to your crate
= note: the full type name has been written to '$TEST_BUILD_DIR/type_length_limit/type_length_limit.long-type.txt'
error: aborting due to 2 previous errors
error: aborting due to previous error