[beta] Rollup backports

.azure-pipelines/auto.yml

@@ -0,0 +1,15 @@
+# Starter pipeline
+# Start with a minimal pipeline that you can customize to build and deploy your code.
+# Add steps that build, run tests, deploy, and more:
+# https://aka.ms/yaml
+
+pr: none
+trigger:
+ - auto
+
+pool:
+  vmImage: 'Ubuntu 16.04'
+
+steps:
+- script: echo Done
+  displayName: 'Dummy build'

src/liballoc/macros.rs

@@ -42,7 +42,7 @@ macro_rules! vec {
     ($($x:expr),*) => (
         <[_]>::into_vec(box [$($x),*])
     );
-    ($($x:expr,)*) => (vec![$($x),*])
+    ($($x:expr,)*) => ($crate::vec![$($x),*])
 }
 
 // HACK(japaric): with cfg(test) the inherent `[T]::into_vec` method, which is

src/libcore/macros.rs

@@ -6,13 +6,13 @@
 #[stable(feature = "core", since = "1.6.0")]
 macro_rules! panic {
     () => (
-        panic!("explicit panic")
+        $crate::panic!("explicit panic")
     );
     ($msg:expr) => ({
         $crate::panicking::panic(&($msg, file!(), line!(), __rust_unstable_column!()))
     });
     ($msg:expr,) => (
-        panic!($msg)
+        $crate::panic!($msg)
     );
     ($fmt:expr, $($arg:tt)+) => ({
         $crate::panicking::panic_fmt(format_args!($fmt, $($arg)*),
@@ -58,7 +58,7 @@ macro_rules! assert_eq {
         }
     });
     ($left:expr, $right:expr,) => ({
-        assert_eq!($left, $right)
+        $crate::assert_eq!($left, $right)
     });
     ($left:expr, $right:expr, $($arg:tt)+) => ({
         match (&($left), &($right)) {
@@ -115,7 +115,7 @@ macro_rules! assert_ne {
         }
     });
     ($left:expr, $right:expr,) => {
-        assert_ne!($left, $right)
+        $crate::assert_ne!($left, $right)
     };
     ($left:expr, $right:expr, $($arg:tt)+) => ({
         match (&($left), &($right)) {
@@ -208,7 +208,7 @@ macro_rules! debug_assert {
 #[macro_export]
 #[stable(feature = "rust1", since = "1.0.0")]
 macro_rules! debug_assert_eq {
-    ($($arg:tt)*) => (if cfg!(debug_assertions) { assert_eq!($($arg)*); })
+    ($($arg:tt)*) => (if cfg!(debug_assertions) { $crate::assert_eq!($($arg)*); })
 }
 
 /// Asserts that two expressions are not equal to each other.
@@ -235,7 +235,7 @@ macro_rules! debug_assert_eq {
 #[macro_export]
 #[stable(feature = "assert_ne", since = "1.13.0")]
 macro_rules! debug_assert_ne {
-    ($($arg:tt)*) => (if cfg!(debug_assertions) { assert_ne!($($arg)*); })
+    ($($arg:tt)*) => (if cfg!(debug_assertions) { $crate::assert_ne!($($arg)*); })
 }
 
 /// Unwraps a result or propagates its error.
@@ -310,7 +310,7 @@ macro_rules! r#try {
             return $crate::result::Result::Err($crate::convert::From::from(err))
         }
     });
-    ($expr:expr,) => (r#try!($expr));
+    ($expr:expr,) => ($crate::r#try!($expr));
 }
 
 /// Writes formatted data into a buffer.
@@ -425,10 +425,10 @@ macro_rules! write {
 #[allow_internal_unstable(format_args_nl)]
 macro_rules! writeln {
     ($dst:expr) => (
-        write!($dst, "\n")
+        $crate::write!($dst, "\n")
     );
     ($dst:expr,) => (
-        writeln!($dst)
+        $crate::writeln!($dst)
     );
     ($dst:expr, $($arg:tt)*) => (
         $dst.write_fmt(format_args_nl!($($arg)*))
@@ -493,10 +493,10 @@ macro_rules! unreachable {
         panic!("internal error: entered unreachable code")
     });
     ($msg:expr) => ({
-        unreachable!("{}", $msg)
+        $crate::unreachable!("{}", $msg)
     });
     ($msg:expr,) => ({
-        unreachable!($msg)
+        $crate::unreachable!($msg)
     });
     ($fmt:expr, $($arg:tt)*) => ({
         panic!(concat!("internal error: entered unreachable code: ", $fmt), $($arg)*)

src/libcore/marker.rs

@@ -73,9 +73,9 @@ impl<T: ?Sized> !Send for *mut T { }
 /// impl Foo for Impl { }
 /// impl Bar for Impl { }
 ///
-/// let x: &Foo = &Impl;    // OK
-/// // let y: &Bar = &Impl; // error: the trait `Bar` cannot
-///                         // be made into an object
+/// let x: &dyn Foo = &Impl;    // OK
+/// // let y: &dyn Bar = &Impl; // error: the trait `Bar` cannot
+///                             // be made into an object
 /// ```
 ///
 /// [trait object]: ../../book/ch17-02-trait-objects.html

src/libcore/mem.rs

@@ -1071,7 +1071,7 @@ impl<T: ?Sized> DerefMut for ManuallyDrop<T> {
 /// optimizations, potentially resulting in a larger size:
 ///
 /// ```rust
-/// # use std::mem::{MaybeUninit, size_of, align_of};
+/// # use std::mem::{MaybeUninit, size_of};
 /// assert_eq!(size_of::<Option<bool>>(), 1);
 /// assert_eq!(size_of::<Option<MaybeUninit<bool>>>(), 2);
 /// ```

src/libcore/raw.rs

@@ -53,7 +53,7 @@
 /// let value: i32 = 123;
 ///
 /// // let the compiler make a trait object
-/// let object: &Foo = &value;
+/// let object: &dyn Foo = &value;
 ///
 /// // look at the raw representation
 /// let raw_object: raw::TraitObject = unsafe { mem::transmute(object) };
@@ -65,7 +65,7 @@
 ///
 /// // construct a new object, pointing to a different `i32`, being
 /// // careful to use the `i32` vtable from `object`
-/// let synthesized: &Foo = unsafe {
+/// let synthesized: &dyn Foo = unsafe {
 ///      mem::transmute(raw::TraitObject {
 ///          data: &other_value as *const _ as *mut (),
 ///          vtable: raw_object.vtable,

src/librustc/middle/region.rs

@@ -658,12 +658,15 @@ impl<'tcx> ScopeTree {
             // The lifetime was defined on node that doesn't own a body,
             // which in practice can only mean a trait or an impl, that
             // is the parent of a method, and that is enforced below.
-            assert_eq!(Some(param_owner_id), self.root_parent,
-                       "free_scope: {:?} not recognized by the \
-                        region scope tree for {:?} / {:?}",
-                       param_owner,
-                       self.root_parent.map(|id| tcx.hir().local_def_id_from_hir_id(id)),
-                       self.root_body.map(|hir_id| DefId::local(hir_id.owner)));
+            if Some(param_owner_id) != self.root_parent {
+                tcx.sess.delay_span_bug(
+                    DUMMY_SP,
+                    &format!("free_scope: {:?} not recognized by the \
+                              region scope tree for {:?} / {:?}",
+                             param_owner,
+                             self.root_parent.map(|id| tcx.hir().local_def_id_from_hir_id(id)),
+                             self.root_body.map(|hir_id| DefId::local(hir_id.owner))));
+            }
 
             // The trait/impl lifetime is in scope for the method's body.
             self.root_body.unwrap().local_id

src/librustc/traits/query/evaluate_obligation.rs

@@ -64,7 +64,7 @@ impl<'cx, 'gcx, 'tcx> InferCtxt<'cx, 'gcx, 'tcx> {
             Err(OverflowError) => {
                 let mut selcx =
                     SelectionContext::with_query_mode(&self, TraitQueryMode::Standard);
-                selcx.evaluate_obligation_recursively(obligation)
+                selcx.evaluate_root_obligation(obligation)
                     .unwrap_or_else(|r| {
                         span_bug!(
                             obligation.cause.span,

src/librustc/ty/subst.rs

@@ -479,21 +479,22 @@ impl<'a, 'gcx, 'tcx> TypeFolder<'gcx, 'tcx> for SubstFolder<'a, 'gcx, 'tcx> {
         // the specialized routine `ty::replace_late_regions()`.
         match *r {
             ty::ReEarlyBound(data) => {
-                let r = self.substs.get(data.index as usize).map(|k| k.unpack());
-                match r {
+                let rk = self.substs.get(data.index as usize).map(|k| k.unpack());
+                match rk {
                     Some(UnpackedKind::Lifetime(lt)) => {
                         self.shift_region_through_binders(lt)
                     }
                     _ => {
                         let span = self.span.unwrap_or(DUMMY_SP);
-                        span_bug!(
-                            span,
+                        let msg = format!(
                             "Region parameter out of range \
                              when substituting in region {} (root type={:?}) \
                              (index={})",
                             data.name,
                             self.root_ty,
                             data.index);
+                        self.tcx.sess.delay_span_bug(span, &msg);
+                        r
                     }
                 }
             }

src/librustc_mir/borrow_check/mod.rs

@@ -1094,7 +1094,7 @@ impl<'cx, 'gcx, 'tcx> MirBorrowckCtxt<'cx, 'gcx, 'tcx> {
 
                 (Reservation(WriteKind::MutableBorrow(bk)), BorrowKind::Shallow)
                 | (Reservation(WriteKind::MutableBorrow(bk)), BorrowKind::Shared) if {
-                    tcx.migrate_borrowck()
+                    tcx.migrate_borrowck() && this.borrow_set.location_map.contains_key(&location)
                 } => {
                     let bi = this.borrow_set.location_map[&location];
                     debug!(

src/librustc_mir/interpret/place.rs

@@ -361,8 +361,12 @@ where
                 offsets[usize::try_from(field).unwrap()],
             layout::FieldPlacement::Array { stride, .. } => {
                 let len = base.len(self)?;
-                assert!(field < len, "Tried to access element {} of array/slice with length {}",
-                    field, len);
+                if field >= len {
+                    // This can be violated because this runs during promotion on code where the
+                    // type system has not yet ensured that such things don't happen.
+                    debug!("Tried to access element {} of array/slice with length {}", field, len);
+                    return err!(BoundsCheck { len, index: field });
+                }
                 stride * field
             }
             layout::FieldPlacement::Union(count) => {

src/librustc_traits/evaluate_obligation.rs

@@ -29,7 +29,7 @@ fn evaluate_obligation<'tcx>(
             let mut selcx = SelectionContext::with_query_mode(&infcx, TraitQueryMode::Canonical);
             let obligation = Obligation::new(ObligationCause::dummy(), param_env, predicate);
 
-            selcx.evaluate_obligation_recursively(&obligation)
+            selcx.evaluate_root_obligation(&obligation)
         },
     )
 }

src/librustc_typeck/check/mod.rs

@@ -5190,52 +5190,6 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
         Some(original_span.with_lo(original_span.hi() - BytePos(1)))
     }
 
-    // Rewrite `SelfCtor` to `Ctor`
-    pub fn rewrite_self_ctor(
-        &self,
-        res: Res,
-        span: Span,
-    ) -> Result<Res, ErrorReported> {
-        let tcx = self.tcx;
-        if let Res::SelfCtor(impl_def_id) = res {
-            let ty = self.impl_self_ty(span, impl_def_id).ty;
-            let adt_def = ty.ty_adt_def();
-
-            match adt_def {
-                Some(adt_def) if adt_def.has_ctor() => {
-                    let variant = adt_def.non_enum_variant();
-                    let ctor_def_id = variant.ctor_def_id.unwrap();
-                    Ok(Res::Def(DefKind::Ctor(CtorOf::Struct, variant.ctor_kind), ctor_def_id))
-                }
-                _ => {
-                    let mut err = tcx.sess.struct_span_err(span,
-                        "the `Self` constructor can only be used with tuple or unit structs");
-                    if let Some(adt_def) = adt_def {
-                        match adt_def.adt_kind() {
-                            AdtKind::Enum => {
-                                err.help("did you mean to use one of the enum's variants?");
-                            },
-                            AdtKind::Struct |
-                            AdtKind::Union => {
-                                err.span_suggestion(
-                                    span,
-                                    "use curly brackets",
-                                    String::from("Self { /* fields */ }"),
-                                    Applicability::HasPlaceholders,
-                                );
-                            }
-                        }
-                    }
-                    err.emit();
-
-                    Err(ErrorReported)
-                }
-            }
-        } else {
-            Ok(res)
-        }
-    }
-
     // Instantiates the given path, which must refer to an item with the given
     // number of type parameters and type.
     pub fn instantiate_value_path(&self,
@@ -5255,12 +5209,8 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
 
         let tcx = self.tcx;
 
-        let res = match self.rewrite_self_ctor(res, span) {
-            Ok(res) => res,
-            Err(ErrorReported) => return (tcx.types.err, res),
-        };
         let path_segs = match res {
-            Res::Local(_) | Res::Upvar(..) => Vec::new(),
+            Res::Local(_) | Res::Upvar(..) | Res::SelfCtor(_) => vec![],
             Res::Def(kind, def_id) =>
                 AstConv::def_ids_for_value_path_segments(self, segments, self_ty, kind, def_id),
             _ => bug!("instantiate_value_path on {:?}", res),
@@ -5368,13 +5318,53 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
             tcx.generics_of(*def_id).has_self
         }).unwrap_or(false);
 
+        let (res, self_ctor_substs) = if let Res::SelfCtor(impl_def_id) = res {
+            let ty = self.impl_self_ty(span, impl_def_id).ty;
+            let adt_def = ty.ty_adt_def();
+
+            match ty.sty {
+                ty::Adt(adt_def, substs) if adt_def.has_ctor() => {
+                    let variant = adt_def.non_enum_variant();
+                    let ctor_def_id = variant.ctor_def_id.unwrap();
+                    (
+                        Res::Def(DefKind::Ctor(CtorOf::Struct, variant.ctor_kind), ctor_def_id),
+                        Some(substs),
+                    )
+                }
+                _ => {
+                    let mut err = tcx.sess.struct_span_err(span,
+                        "the `Self` constructor can only be used with tuple or unit structs");
+                    if let Some(adt_def) = adt_def {
+                        match adt_def.adt_kind() {
+                            AdtKind::Enum => {
+                                err.help("did you mean to use one of the enum's variants?");
+                            },
+                            AdtKind::Struct |
+                            AdtKind::Union => {
+                                err.span_suggestion(
+                                    span,
+                                    "use curly brackets",
+                                    String::from("Self { /* fields */ }"),
+                                    Applicability::HasPlaceholders,
+                                );
+                            }
+                        }
+                    }
+                    err.emit();
+
+                    return (tcx.types.err, res)
+                }
+            }
+        } else {
+            (res, None)
+        };
         let def_id = res.def_id();
 
         // The things we are substituting into the type should not contain
         // escaping late-bound regions, and nor should the base type scheme.
         let ty = tcx.type_of(def_id);
 
-        let substs = AstConv::create_substs_for_generic_args(
+        let substs = self_ctor_substs.unwrap_or_else(|| AstConv::create_substs_for_generic_args(
             tcx,
             def_id,
             &[][..],
@@ -5444,7 +5434,7 @@ impl<'a, 'gcx, 'tcx> FnCtxt<'a, 'gcx, 'tcx> {
                     }
                 }
             },
-        );
+        ));
         assert!(!substs.has_escaping_bound_vars());
         assert!(!ty.has_escaping_bound_vars());
 

src/librustdoc/config.rs

@@ -351,9 +351,6 @@ impl Options {
                             .unwrap_or_else(|| PathBuf::from("doc"));
         let mut cfgs = matches.opt_strs("cfg");
         cfgs.push("rustdoc".to_string());
-        if should_test {
-            cfgs.push("test".to_string());
-        }
 
         let extension_css = matches.opt_str("e").map(|s| PathBuf::from(&s));
 

src/libstd/lib.rs

@@ -223,7 +223,8 @@
 #![cfg_attr(all(target_vendor = "fortanix", target_env = "sgx"),
             feature(global_asm, slice_index_methods,
                     decl_macro, coerce_unsized, sgx_platform, ptr_wrapping_offset_from))]
-#![cfg_attr(all(test, target_vendor = "fortanix", target_env = "sgx"), feature(fixed_size_array))]
+#![cfg_attr(all(test, target_vendor = "fortanix", target_env = "sgx"),
+            feature(fixed_size_array, maybe_uninit_extra))]
 
 // std is implemented with unstable features, many of which are internal
 // compiler details that will never be stable

src/libstd/macros.rs

@@ -56,13 +56,13 @@
 #[allow_internal_unstable(__rust_unstable_column, libstd_sys_internals)]
 macro_rules! panic {
     () => ({
-        panic!("explicit panic")
+        $crate::panic!("explicit panic")
     });
     ($msg:expr) => ({
         $crate::rt::begin_panic($msg, &(file!(), line!(), __rust_unstable_column!()))
     });
     ($msg:expr,) => ({
-        panic!($msg)
+        $crate::panic!($msg)
     });
     ($fmt:expr, $($arg:tt)+) => ({
         $crate::rt::begin_panic_fmt(&format_args!($fmt, $($arg)+),
@@ -145,7 +145,7 @@ macro_rules! print {
 #[stable(feature = "rust1", since = "1.0.0")]
 #[allow_internal_unstable(print_internals, format_args_nl)]
 macro_rules! println {
-    () => (print!("\n"));
+    () => ($crate::print!("\n"));
     ($($arg:tt)*) => ({
         $crate::io::_print(format_args_nl!($($arg)*));
     })
@@ -204,7 +204,7 @@ macro_rules! eprint {
 #[stable(feature = "eprint", since = "1.19.0")]
 #[allow_internal_unstable(print_internals, format_args_nl)]
 macro_rules! eprintln {
-    () => (eprint!("\n"));
+    () => ($crate::eprint!("\n"));
     ($($arg:tt)*) => ({
         $crate::io::_eprint(format_args_nl!($($arg)*));
     })
@@ -337,23 +337,23 @@ macro_rules! eprintln {
 #[stable(feature = "dbg_macro", since = "1.32.0")]
 macro_rules! dbg {
     () => {
-        eprintln!("[{}:{}]", file!(), line!());
+        $crate::eprintln!("[{}:{}]", file!(), line!());
     };
     ($val:expr) => {
         // Use of `match` here is intentional because it affects the lifetimes
         // of temporaries - https://stackoverflow.com/a/48732525/1063961
         match $val {
             tmp => {
-                eprintln!("[{}:{}] {} = {:#?}",
+                $crate::eprintln!("[{}:{}] {} = {:#?}",
                     file!(), line!(), stringify!($val), &tmp);
                 tmp
             }
         }
     };
     // Trailing comma with single argument is ignored
-    ($val:expr,) => { dbg!($val) };
+    ($val:expr,) => { $crate::dbg!($val) };
     ($($val:expr),+ $(,)?) => {
-        ($(dbg!($val)),+,)
+        ($($crate::dbg!($val)),+,)
     };
 }
 

src/test/rustdoc-ui/cfg-test.rs

@@ -2,18 +2,21 @@
 // compile-flags:--test
 // normalize-stdout-test: "src/test/rustdoc-ui" -> "$$DIR"
 
+// Crates like core have doctests gated on `cfg(not(test))` so we need to make
+// sure `cfg(test)` is not active when running `rustdoc --test`.
+
 /// this doctest will be ignored:
 ///
 /// ```
 /// assert!(false);
 /// ```
-#[cfg(not(test))]
+#[cfg(test)]
 pub struct Foo;
 
 /// this doctest will be tested:
 ///
 /// ```
 /// assert!(true);
 /// ```
-#[cfg(test)]
+#[cfg(not(test))]
 pub struct Foo;

src/test/rustdoc-ui/cfg-test.stdout

@@ -1,6 +1,6 @@
 
 running 1 test
-test $DIR/cfg-test.rs - Foo (line 15) ... ok
+test $DIR/cfg-test.rs - Foo (line 18) ... ok
 
 test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
 

src/test/ui/consts/array-literal-index-oob.rs

@@ -0,0 +1,5 @@
+fn main() {
+    &{[1, 2, 3][4]};
+    //~^ ERROR index out of bounds
+    //~| ERROR reaching this expression at runtime will panic or abort
+}

src/test/ui/consts/array-literal-index-oob.stderr

@@ -0,0 +1,18 @@
+error: index out of bounds: the len is 3 but the index is 4
+  --> $DIR/array-literal-index-oob.rs:2:7
+   |
+LL |     &{[1, 2, 3][4]};
+   |       ^^^^^^^^^^^^
+   |
+   = note: #[deny(const_err)] on by default
+
+error: reaching this expression at runtime will panic or abort
+  --> $DIR/array-literal-index-oob.rs:2:7
+   |
+LL |     &{[1, 2, 3][4]};
+   |     --^^^^^^^^^^^^-
+   |       |
+   |       index out of bounds: the len is 3 but the index is 4
+
+error: aborting due to 2 previous errors
+

src/test/ui/hygiene/no_implicit_prelude.rs

@@ -13,7 +13,7 @@ mod bar {
     }
     fn f() {
         ::foo::m!();
-        println!(); //~ ERROR cannot find macro `print!` in this scope
+        assert_eq!(0, 0); //~ ERROR cannot find macro `panic!` in this scope
     }
 }
 

src/test/ui/hygiene/no_implicit_prelude.stderr

@@ -7,11 +7,11 @@ LL |     fn f() { ::bar::m!(); }
 LL |         Vec::new();
    |         ^^^ use of undeclared type or module `Vec`
 
-error: cannot find macro `print!` in this scope
+error: cannot find macro `panic!` in this scope
   --> $DIR/no_implicit_prelude.rs:16:9
    |
-LL |         println!();
-   |         ^^^^^^^^^^^
+LL |         assert_eq!(0, 0);
+   |         ^^^^^^^^^^^^^^^^^
    |
    = help: have you added the `#[macro_use]` on the module/import?
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

src/test/ui/imports/local-modularized-tricky-fail-1.rs

@@ -33,7 +33,6 @@ mod inner2 {
 
 fn main() {
     panic!(); //~ ERROR `panic` is ambiguous
-              //~| ERROR `panic` is ambiguous
 }
 
 mod inner3 {

src/test/ui/imports/local-modularized-tricky-fail-1.stderr

@@ -22,7 +22,7 @@ LL | use inner1::*;
    = help: consider adding an explicit import of `exported` to disambiguate
 
 error[E0659]: `include` is ambiguous (macro-expanded name vs less macro-expanded name from outer scope during import/macro resolution)
-  --> $DIR/local-modularized-tricky-fail-1.rs:47:1
+  --> $DIR/local-modularized-tricky-fail-1.rs:46:1
    |
 LL | include!();
    | ^^^^^^^ ambiguous name
@@ -59,26 +59,6 @@ LL |       define_panic!();
    |       ---------------- in this macro invocation
    = help: use `crate::panic` to refer to this macro unambiguously
 
-error[E0659]: `panic` is ambiguous (macro-expanded name vs less macro-expanded name from outer scope during import/macro resolution)
-  --> $DIR/local-modularized-tricky-fail-1.rs:35:5
-   |
-LL |     panic!();
-   |     ^^^^^^^^^ ambiguous name
-   |
-   = note: `panic` could refer to a macro from prelude
-note: `panic` could also refer to the macro defined here
-  --> $DIR/local-modularized-tricky-fail-1.rs:11:5
-   |
-LL | /     macro_rules! panic {
-LL | |         () => ()
-LL | |     }
-   | |_____^
-...
-LL |       define_panic!();
-   |       ---------------- in this macro invocation
-   = help: use `crate::panic` to refer to this macro unambiguously
-   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
-
-error: aborting due to 4 previous errors
+error: aborting due to 3 previous errors
 
 For more information about this error, try `rustc --explain E0659`.

src/test/run-pass/issues/issue-57924.rs → src/test/ui/issues/issue-57924.rs

@@ -3,6 +3,7 @@ pub struct Gcm<E>(E);
 impl<E> Gcm<E> {
     pub fn crash(e: E) -> Self {
         Self::<E>(e)
+        //~^ ERROR type arguments are not allowed for this type
     }
 }
 

src/test/ui/issues/issue-57924.stderr

@@ -0,0 +1,9 @@
+error[E0109]: type arguments are not allowed for this type
+  --> $DIR/issue-57924.rs:5:16
+   |
+LL |         Self::<E>(e)
+   |                ^ type argument not allowed
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0109`.

src/test/ui/issues/issue-61623.rs

@@ -0,0 +1,11 @@
+fn f1<'a>(_: &'a mut ()) {}
+
+fn f2<P>(_: P, _: ()) {}
+
+fn f3<'a>(x: &'a ((), &'a mut ())) {
+    f2(|| x.0, f1(x.1))
+//~^ ERROR cannot borrow `*x.1` as mutable, as it is behind a `&` reference
+//~| ERROR cannot borrow `*x.1` as mutable because it is also borrowed as immutable
+}
+
+fn main() {}

src/test/ui/issues/issue-61623.stderr

@@ -0,0 +1,22 @@
+error[E0596]: cannot borrow `*x.1` as mutable, as it is behind a `&` reference
+  --> $DIR/issue-61623.rs:6:19
+   |
+LL | fn f3<'a>(x: &'a ((), &'a mut ())) {
+   |              -------------------- help: consider changing this to be a mutable reference: `&'a mut ((), &'a mut ())`
+LL |     f2(|| x.0, f1(x.1))
+   |                   ^^^ `x` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+
+error[E0502]: cannot borrow `*x.1` as mutable because it is also borrowed as immutable
+  --> $DIR/issue-61623.rs:6:19
+   |
+LL |     f2(|| x.0, f1(x.1))
+   |     -- -- -       ^^^ mutable borrow occurs here
+   |     |  |  |
+   |     |  |  first borrow occurs due to use of `x` in closure
+   |     |  immutable borrow occurs here
+   |     immutable borrow later used by call
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0502, E0596.
+For more information about an error, try `rustc --explain E0502`.

src/test/ui/issues/issue-61882-2.rs

@@ -0,0 +1,11 @@
+struct A<T>(T);
+
+impl A<&'static u8> {
+    fn f() {
+        let x = 0;
+        Self(&x);
+        //~^ ERROR `x` does not live long enough
+    }
+}
+
+fn main() {}

src/test/ui/issues/issue-61882-2.stderr

@@ -0,0 +1,15 @@
+error[E0597]: `x` does not live long enough
+  --> $DIR/issue-61882-2.rs:6:14
+   |
+LL |         Self(&x);
+   |              ^^
+   |              |
+   |              borrowed value does not live long enough
+   |              requires that `x` is borrowed for `'static`
+LL |
+LL |     }
+   |     - `x` dropped here while still borrowed
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0597`.

src/test/ui/issues/issue-61882.rs

@@ -0,0 +1,9 @@
+struct A<T>(T);
+
+impl A<bool> {
+    const B: A<u8> = Self(0);
+    //~^ ERROR mismatched types
+    //~| ERROR mismatched types
+}
+
+fn main() {}

src/test/ui/issues/issue-61882.stderr

@@ -0,0 +1,21 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-61882.rs:4:27
+   |
+LL |     const B: A<u8> = Self(0);
+   |                           ^ expected bool, found integer
+   |
+   = note: expected type `bool`
+              found type `{integer}`
+
+error[E0308]: mismatched types
+  --> $DIR/issue-61882.rs:4:22
+   |
+LL |     const B: A<u8> = Self(0);
+   |                      ^^^^^^^ expected u8, found bool
+   |
+   = note: expected type `A<u8>`
+              found type `A<bool>`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0308`.

src/test/ui/rfc1598-generic-associated-types/gat-dont-ice-on-absent-feature.rs

@@ -0,0 +1,14 @@
+// rust-lang/rust#60654: Do not ICE on an attempt to use GATs that is
+// missing the feature gate.
+
+struct Foo;
+
+impl Iterator for Foo {
+    type Item<'b> = &'b Foo; //~ ERROR generic associated types are unstable [E0658]
+
+    fn next(&mut self) -> Option<Self::Item> {
+        None
+    }
+}
+
+fn main() { }

src/test/ui/rfc1598-generic-associated-types/gat-dont-ice-on-absent-feature.stderr

@@ -0,0 +1,12 @@
+error[E0658]: generic associated types are unstable
+  --> $DIR/gat-dont-ice-on-absent-feature.rs:7:5
+   |
+LL |     type Item<'b> = &'b Foo;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, see https://github.com/rust-lang/rust/issues/44265
+   = help: add #![feature(generic_associated_types)] to the crate attributes to enable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0658`.