Auto merge of #38958 - sanxiyn:rollup, r=sanxiyn

Rollup of 11 pull requests

- Successful merges: #38606, #38607, #38623, #38664, #38799, #38816, #38836, #38839, #38841, #38849, #38874
- Failed merges: #38845
This commit is contained in:
bors 2017-01-10 14:08:21 +00:00
commit 7bffede97c
30 changed files with 346 additions and 49 deletions

View file

@ -316,7 +316,6 @@ pub fn build_rules<'a>(build: &'a Build) -> Rules {
"codegen-units");
suite("check-incremental", "src/test/incremental", "incremental",
"incremental");
suite("check-ui", "src/test/ui", "ui", "ui");
}
if build.config.build.contains("msvc") {
@ -363,6 +362,7 @@ pub fn build_rules<'a>(build: &'a Build) -> Rules {
});
};
suite("check-ui", "src/test/ui", "ui", "ui");
suite("check-rpass-full", "src/test/run-pass-fulldeps",
"run-pass", "run-pass-fulldeps");
suite("check-rfail-full", "src/test/run-fail-fulldeps",
@ -1374,7 +1374,6 @@ mod tests {
assert!(plan.iter().any(|s| s.name.contains("-ui")));
assert!(plan.iter().any(|s| s.name.contains("cfail")));
assert!(plan.iter().any(|s| s.name.contains("cfail")));
assert!(plan.iter().any(|s| s.name.contains("cfail-full")));
assert!(plan.iter().any(|s| s.name.contains("codegen-units")));
assert!(plan.iter().any(|s| s.name.contains("debuginfo")));
@ -1407,8 +1406,7 @@ mod tests {
assert!(plan.iter().all(|s| s.host == "A"));
assert!(plan.iter().all(|s| s.target == "C"));
assert!(plan.iter().any(|s| s.name.contains("-ui")));
assert!(plan.iter().any(|s| s.name.contains("cfail")));
assert!(!plan.iter().any(|s| s.name.contains("-ui")));
assert!(plan.iter().any(|s| s.name.contains("cfail")));
assert!(!plan.iter().any(|s| s.name.contains("cfail-full")));
assert!(plan.iter().any(|s| s.name.contains("codegen-units")));

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@ -17,6 +17,7 @@ Coercion is allowed between the following types:
* `&T` to `*const T`
* `&mut T` to `*mut T`
* Unsizing: `T` to `U` if `T` implements `CoerceUnsized<U>`
* Deref coercion: Expression `&x` of type `&T` to `&*x` of type `&U` if `T` derefs to `U` (i.e. `T: Deref<Target=U>`)
`CoerceUnsized<Pointer<U>> for Pointer<T> where T: Unsize<U>` is implemented
for all pointer types (including smart pointers like Box and Rc). Unsize is
@ -27,8 +28,9 @@ only implemented automatically, and enables the following transformations:
* `Foo<..., T, ...>` => `Foo<..., U, ...>` where:
* `T: Unsize<U>`
* `Foo` is a struct
* Only the last field of `Foo` has type `T`
* Only the last field of `Foo` has type involving `T`
* `T` is not part of the type of any other fields
* `Bar<T>: Unsize<Bar<U>>`, if the last field of `Foo` has type `Bar<T>`
Coercions occur at a *coercion site*. Any location that is explicitly typed
will cause a coercion to its type. If inference is necessary, the coercion will

View file

@ -708,7 +708,7 @@ impl<T: ?Sized> Arc<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: ?Sized> Drop for Arc<T> {
unsafe impl<#[may_dangle] T: ?Sized> Drop for Arc<T> {
/// Drops the `Arc`.
///
/// This will decrement the strong reference count. If the strong reference
@ -736,7 +736,6 @@ impl<T: ?Sized> Drop for Arc<T> {
/// drop(foo); // Doesn't print anything
/// drop(foo2); // Prints "dropped!"
/// ```
#[unsafe_destructor_blind_to_params]
#[inline]
fn drop(&mut self) {
// Because `fetch_sub` is already atomic, we do not need to synchronize

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@ -79,9 +79,10 @@
#![feature(const_fn)]
#![feature(core_intrinsics)]
#![feature(custom_attribute)]
#![feature(dropck_parametricity)]
#![feature(dropck_eyepatch)]
#![cfg_attr(not(test), feature(exact_size_is_empty))]
#![feature(fundamental)]
#![feature(generic_param_attrs)]
#![feature(lang_items)]
#![feature(needs_allocator)]
#![feature(optin_builtin_traits)]

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@ -539,8 +539,7 @@ impl<T> RawVec<T> {
}
}
impl<T> Drop for RawVec<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T> Drop for RawVec<T> {
/// Frees the memory owned by the RawVec *without* trying to Drop its contents.
fn drop(&mut self) {
let elem_size = mem::size_of::<T>();

View file

@ -644,7 +644,7 @@ impl<T: ?Sized> Deref for Rc<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: ?Sized> Drop for Rc<T> {
unsafe impl<#[may_dangle] T: ?Sized> Drop for Rc<T> {
/// Drops the `Rc`.
///
/// This will decrement the strong reference count. If the strong reference
@ -672,7 +672,6 @@ impl<T: ?Sized> Drop for Rc<T> {
/// drop(foo); // Doesn't print anything
/// drop(foo2); // Prints "dropped!"
/// ```
#[unsafe_destructor_blind_to_params]
fn drop(&mut self) {
unsafe {
let ptr = *self.ptr;

View file

@ -30,10 +30,10 @@
#![feature(alloc)]
#![feature(core_intrinsics)]
#![feature(dropck_eyepatch)]
#![feature(heap_api)]
#![feature(heap_api)]
#![feature(generic_param_attrs)]
#![feature(staged_api)]
#![feature(dropck_parametricity)]
#![cfg_attr(test, feature(test))]
#![allow(deprecated)]
@ -258,8 +258,7 @@ impl<T> TypedArena<T> {
}
}
impl<T> Drop for TypedArena<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T> Drop for TypedArena<T> {
fn drop(&mut self) {
unsafe {
// Determine how much was filled.

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@ -137,8 +137,7 @@ pub struct BTreeMap<K, V> {
}
#[stable(feature = "btree_drop", since = "1.7.0")]
impl<K, V> Drop for BTreeMap<K, V> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] K, #[may_dangle] V> Drop for BTreeMap<K, V> {
fn drop(&mut self) {
unsafe {
for _ in ptr::read(self).into_iter() {

View file

@ -35,10 +35,11 @@
#![feature(box_syntax)]
#![cfg_attr(not(test), feature(char_escape_debug))]
#![feature(core_intrinsics)]
#![feature(dropck_parametricity)]
#![feature(dropck_eyepatch)]
#![feature(exact_size_is_empty)]
#![feature(fmt_internals)]
#![feature(fused)]
#![feature(generic_param_attrs)]
#![feature(heap_api)]
#![feature(inclusive_range)]
#![feature(lang_items)]

View file

@ -726,8 +726,7 @@ impl<T> LinkedList<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for LinkedList<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T> Drop for LinkedList<T> {
fn drop(&mut self) {
while let Some(_) = self.pop_front_node() {}
}

View file

@ -370,7 +370,8 @@ impl<T> Vec<T> {
/// * `capacity` needs to be the capacity that the pointer was allocated with.
///
/// Violating these may cause problems like corrupting the allocator's
/// internal datastructures.
/// internal datastructures. For example it is **not** safe
/// to build a `Vec<u8>` from a pointer to a C `char` array and a `size_t`.
///
/// The ownership of `ptr` is effectively transferred to the
/// `Vec<T>` which may then deallocate, reallocate or change the
@ -1786,8 +1787,7 @@ impl<T: Ord> Ord for Vec<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for Vec<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T> Drop for Vec<T> {
fn drop(&mut self) {
unsafe {
// use drop for [T]
@ -2056,8 +2056,7 @@ impl<T: Clone> Clone for IntoIter<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for IntoIter<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T> Drop for IntoIter<T> {
fn drop(&mut self) {
// destroy the remaining elements
for _x in self.by_ref() {}

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@ -69,8 +69,7 @@ impl<T: Clone> Clone for VecDeque<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T> Drop for VecDeque<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T> Drop for VecDeque<T> {
fn drop(&mut self) {
let (front, back) = self.as_mut_slices();
unsafe {

View file

@ -192,14 +192,12 @@ fn main() {
if !target.contains("ios") {
sources.extend(&["absvti2.c",
"addtf3.c",
"addvti3.c",
"ashlti3.c",
"ashrti3.c",
"clzti2.c",
"cmpti2.c",
"ctzti2.c",
"divtf3.c",
"divti3.c",
"ffsti2.c",
"fixdfti.c",
@ -216,17 +214,13 @@ fn main() {
"floatuntixf.c",
"lshrti3.c",
"modti3.c",
"multf3.c",
"multi3.c",
"mulvti3.c",
"negti2.c",
"negvti2.c",
"parityti2.c",
"popcountti2.c",
"powitf2.c",
"subtf3.c",
"subvti3.c",
"trampoline_setup.c",
"ucmpti2.c",
"udivmodti4.c",
"udivti3.c",

View file

@ -100,13 +100,26 @@ pub trait Sized {
///
/// All implementations of `Unsize` are provided automatically by the compiler.
///
/// `Unsize` is implemented for:
///
/// - `[T; N]` is `Unsize<[T]>`
/// - `T` is `Unsize<Trait>` when `T: Trait`
/// - `Foo<..., T, ...>` is `Unsize<Foo<..., U, ...>>` if:
/// - `T: Unsize<U>`
/// - Foo is a struct
/// - Only the last field of `Foo` has a type involving `T`
/// - `T` is not part of the type of any other fields
/// - `Bar<T>: Unsize<Bar<U>>`, if the last field of `Foo` has type `Bar<T>`
///
/// `Unsize` is used along with [`ops::CoerceUnsized`][coerceunsized] to allow
/// "user-defined" containers such as [`rc::Rc`][rc] to contain dynamically-sized
/// types. See the [DST coercion RFC][RFC982] for more details.
/// types. See the [DST coercion RFC][RFC982] and [the nomicon entry on coercion][nomicon-coerce]
/// for more details.
///
/// [coerceunsized]: ../ops/trait.CoerceUnsized.html
/// [rc]: ../../std/rc/struct.Rc.html
/// [RFC982]: https://github.com/rust-lang/rfcs/blob/master/text/0982-dst-coercion.md
#[unstable(feature = "unsize", issue = "27732")]
#[lang="unsize"]
pub trait Unsize<T: ?Sized> {

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@ -2710,6 +2710,35 @@ mod impls {
/// Trait that indicates that this is a pointer or a wrapper for one,
/// where unsizing can be performed on the pointee.
///
/// See the [DST coercion RfC][dst-coerce] and [the nomicon entry on coercion][nomicon-coerce]
/// for more details.
///
/// For builtin pointer types, pointers to `T` will coerce to pointers to `U` if `T: Unsize<U>`
/// by converting from a thin pointer to a fat pointer.
///
/// For custom types, the coercion here works by coercing `Foo<T>` to `Foo<U>`
/// provided an impl of `CoerceUnsized<Foo<U>> for Foo<T>` exists.
/// Such an impl can only be written if `Foo<T>` has only a single non-phantomdata
/// field involving `T`. If the type of that field is `Bar<T>`, an implementation
/// of `CoerceUnsized<Bar<U>> for Bar<T>` must exist. The coercion will work by
/// by coercing the `Bar<T>` field into `Bar<U>` and filling in the rest of the fields
/// from `Foo<T>` to create a `Foo<U>`. This will effectively drill down to a pointer
/// field and coerce that.
///
/// Generally, for smart pointers you will implement
/// `CoerceUnsized<Ptr<U>> for Ptr<T> where T: Unsize<U>, U: ?Sized`, with an
/// optional `?Sized` bound on `T` itself. For wrapper types that directly embed `T`
/// like `Cell<T>` and `RefCell<T>`, you
/// can directly implement `CoerceUnsized<Wrap<U>> for Wrap<T> where T: CoerceUnsized<U>`.
/// This will let coercions of types like `Cell<Box<T>>` work.
///
/// [`Unsize`][unsize] is used to mark types which can be coerced to DSTs if behind
/// pointers. It is implemented automatically by the compiler.
///
/// [dst-coerce]: https://github.com/rust-lang/rfcs/blob/master/text/0982-dst-coercion.md
/// [unsize]: ../marker/trait.Unsize.html
/// [nomicon-coerce]: ../../nomicon/coercions.html
#[unstable(feature = "coerce_unsized", issue = "27732")]
#[lang="coerce_unsized"]
pub trait CoerceUnsized<T> {

View file

@ -1175,7 +1175,7 @@ pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
assumed.", "[KIND=]NAME"),
opt::multi_s("", "crate-type", "Comma separated list of types of crates
for the compiler to emit",
"[bin|lib|rlib|dylib|cdylib|staticlib]"),
"[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]"),
opt::opt_s("", "crate-name", "Specify the name of the crate being built",
"NAME"),
opt::multi_s("", "emit", "Comma separated list of types of output for \

View file

@ -1061,8 +1061,7 @@ impl<K: Clone, V: Clone> Clone for RawTable<K, V> {
}
}
impl<K, V> Drop for RawTable<K, V> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] K, #[may_dangle] V> Drop for RawTable<K, V> {
fn drop(&mut self) {
if self.capacity == 0 {
return;

View file

@ -259,6 +259,15 @@ impl OsStr {
/// Yields a `&str` slice if the `OsStr` is valid Unicode.
///
/// This conversion may entail doing a check for UTF-8 validity.
///
/// # Examples
///
/// ```
/// use std::ffi::OsStr;
///
/// let os_str = OsStr::new("foo");
/// assert_eq!(os_str.to_str(), Some("foo"));
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn to_str(&self) -> Option<&str> {
self.inner.to_str()
@ -267,6 +276,20 @@ impl OsStr {
/// Converts an `OsStr` to a `Cow<str>`.
///
/// Any non-Unicode sequences are replaced with U+FFFD REPLACEMENT CHARACTER.
///
/// # Examples
///
/// Calling `to_string_lossy` on an `OsStr` with valid unicode:
///
/// ```
/// use std::ffi::OsStr;
///
/// let os_str = OsStr::new("foo");
/// assert_eq!(os_str.to_string_lossy(), "foo");
/// ```
///
/// Had `os_str` contained invalid unicode, the `to_string_lossy` call might
/// have returned `"fo<66>"`.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn to_string_lossy(&self) -> Cow<str> {
self.inner.to_string_lossy()

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@ -250,13 +250,14 @@
#![feature(const_fn)]
#![feature(core_float)]
#![feature(core_intrinsics)]
#![feature(dropck_parametricity)]
#![feature(dropck_eyepatch)]
#![feature(exact_size_is_empty)]
#![feature(float_extras)]
#![feature(float_from_str_radix)]
#![feature(fn_traits)]
#![feature(fnbox)]
#![feature(fused)]
#![feature(generic_param_attrs)]
#![feature(hashmap_hasher)]
#![feature(heap_api)]
#![feature(inclusive_range)]

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@ -52,7 +52,7 @@ pub struct TcpStream(net_imp::TcpStream);
/// // ...
/// }
///
/// // accept connections and process them, spawning a new thread for each one
/// // accept connections and process them serially
/// for stream in listener.incoming() {
/// match stream {
/// Ok(stream) => {

View file

@ -1428,8 +1428,8 @@ impl Path {
/// ```
/// use std::path::Path;
///
/// let path_str = Path::new("foo.txt").to_str();
/// assert_eq!(path_str, Some("foo.txt"));
/// let path = Path::new("foo.txt");
/// assert_eq!(path.to_str(), Some("foo.txt"));
/// ```
#[stable(feature = "rust1", since = "1.0.0")]
pub fn to_str(&self) -> Option<&str> {
@ -1444,12 +1444,17 @@ impl Path {
///
/// # Examples
///
/// Calling `to_string_lossy` on a `Path` with valid unicode:
///
/// ```
/// use std::path::Path;
///
/// let path_str = Path::new("foo.txt").to_string_lossy();
/// assert_eq!(path_str, "foo.txt");
/// let path = Path::new("foo.txt");
/// assert_eq!(path.to_string_lossy(), "foo.txt");
/// ```
///
/// Had `os_str` contained invalid unicode, the `to_string_lossy` call might
/// have returned `"fo<66>.txt"`.
#[stable(feature = "rust1", since = "1.0.0")]
pub fn to_string_lossy(&self) -> Cow<str> {
self.inner.to_string_lossy()

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@ -502,7 +502,7 @@ mod prim_str { }
/// [`Hash`]: hash/trait.Hash.html
///
/// Due to a temporary restriction in Rust's type system, these traits are only
/// implemented on tuples of arity 32 or less. In the future, this may change.
/// implemented on tuples of arity 12 or less. In the future, this may change.
///
/// # Examples
///

View file

@ -280,8 +280,7 @@ impl<T: ?Sized> Mutex<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: ?Sized> Drop for Mutex<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T: ?Sized> Drop for Mutex<T> {
fn drop(&mut self) {
// This is actually safe b/c we know that there is no further usage of
// this mutex (it's up to the user to arrange for a mutex to get

View file

@ -310,8 +310,7 @@ impl<T: ?Sized> RwLock<T> {
}
#[stable(feature = "rust1", since = "1.0.0")]
impl<T: ?Sized> Drop for RwLock<T> {
#[unsafe_destructor_blind_to_params]
unsafe impl<#[may_dangle] T: ?Sized> Drop for RwLock<T> {
fn drop(&mut self) {
// IMPORTANT: This code needs to be kept in sync with `RwLock::into_inner`.
unsafe { self.inner.destroy() }

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@ -402,3 +402,155 @@ impl ChangeArgumentTypeTrait for Foo {
fn method_name(&self, _x: char) { }
}
struct Bar<T>(T);
// Add Type Parameter To Impl --------------------------------------------------
trait AddTypeParameterToImpl<T> {
fn id(t: T) -> T;
}
#[cfg(cfail1)]
impl AddTypeParameterToImpl<u32> for Bar<u32> {
fn id(t: u32) -> u32 { t }
}
#[cfg(not(cfail1))]
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
impl<T> AddTypeParameterToImpl<T> for Bar<T> {
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
fn id(t: T) -> T { t }
}
// Change Self Type of Impl ----------------------------------------------------
trait ChangeSelfTypeOfImpl {
fn id(self) -> Self;
}
#[cfg(cfail1)]
impl ChangeSelfTypeOfImpl for u32 {
fn id(self) -> Self { self }
}
#[cfg(not(cfail1))]
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
impl ChangeSelfTypeOfImpl for u64 {
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
fn id(self) -> Self { self }
}
// Add Lifetime Bound to Impl --------------------------------------------------
trait AddLifetimeBoundToImplParameter {
fn id(self) -> Self;
}
#[cfg(cfail1)]
impl<T> AddLifetimeBoundToImplParameter for T {
fn id(self) -> Self { self }
}
#[cfg(not(cfail1))]
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
impl<T: 'static> AddLifetimeBoundToImplParameter for T {
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
fn id(self) -> Self { self }
}
// Add Trait Bound to Impl Parameter -------------------------------------------
trait AddTraitBoundToImplParameter {
fn id(self) -> Self;
}
#[cfg(cfail1)]
impl<T> AddTraitBoundToImplParameter for T {
fn id(self) -> Self { self }
}
#[cfg(not(cfail1))]
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
impl<T: Clone> AddTraitBoundToImplParameter for T {
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
fn id(self) -> Self { self }
}
// Add #[no_mangle] to Method --------------------------------------------------
trait AddNoMangleToMethod {
fn add_no_mangle_to_method(&self) { }
}
#[cfg(cfail1)]
impl AddNoMangleToMethod for Foo {
fn add_no_mangle_to_method(&self) { }
}
#[cfg(not(cfail1))]
#[rustc_clean(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_clean(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
impl AddNoMangleToMethod for Foo {
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
#[no_mangle]
fn add_no_mangle_to_method(&self) { }
}
// Make Method #[inline] -------------------------------------------------------
trait MakeMethodInline {
fn make_method_inline(&self) -> u8 { 0 }
}
#[cfg(cfail1)]
impl MakeMethodInline for Foo {
fn make_method_inline(&self) -> u8 { 0 }
}
#[cfg(not(cfail1))]
#[rustc_clean(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_clean(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
impl MakeMethodInline for Foo {
#[rustc_dirty(label="Hir", cfg="cfail2")]
#[rustc_clean(label="Hir", cfg="cfail3")]
#[rustc_metadata_dirty(cfg="cfail2")]
#[rustc_metadata_clean(cfg="cfail3")]
#[inline]
fn make_method_inline(&self) -> u8 { 0 }
}

View file

@ -0,0 +1,28 @@
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// no-prefer-dynamic
#![crate_type = "proc-macro"]
#![feature(proc_macro, proc_macro_lib)]
extern crate proc_macro;
use proc_macro::TokenStream;
#[proc_macro_derive(Foo)]
pub fn derive_foo(input: TokenStream) -> TokenStream {
input
}
#[proc_macro_derive(Bar)]
pub fn derive_bar(input: TokenStream) -> TokenStream {
panic!("lolnope");
}

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@ -0,0 +1,23 @@
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// aux-build:plugin.rs
#![feature(proc_macro)]
#[macro_use] extern crate plugin;
#[derive(Foo, Bar)]
struct Baz {
a: i32,
b: i32,
}
fn main() {}

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error: custom derive attribute panicked
--> $DIR/issue-36935.rs:17:15
|
17 | #[derive(Foo, Bar)]
| ^^^
|
= help: message: lolnope

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// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// Point at correct span for self type
struct SomeType {}
trait Foo {
fn handler(self: &SomeType);
}
fn main() {}

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error[E0308]: mismatched method receiver
--> $DIR/issue-27522.rs:16:22
|
16 | fn handler(self: &SomeType);
| ^^^^^^^^^ expected Self, found struct `SomeType`
|
= note: expected type `&Self`
= note: found type `&SomeType`
error: aborting due to previous error