From a9ecfd729507d19946f0b66c78cebca1e23e9a15 Mon Sep 17 00:00:00 2001 From: Vadim Petrochenkov Date: Thu, 15 Aug 2019 21:23:11 +0300 Subject: Hygienize use of built-in macros in the standard library --- src/libstd/macros.rs | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) (limited to 'src/libstd') diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs index f2000936b9a..9fafe26104a 100644 --- a/src/libstd/macros.rs +++ b/src/libstd/macros.rs @@ -59,14 +59,14 @@ macro_rules! panic { $crate::panic!("explicit panic") }); ($msg:expr) => ({ - $crate::rt::begin_panic($msg, &(file!(), line!(), __rust_unstable_column!())) + $crate::rt::begin_panic($msg, &($crate::file!(), $crate::line!(), $crate::column!())) }); ($msg:expr,) => ({ $crate::panic!($msg) }); ($fmt:expr, $($arg:tt)+) => ({ - $crate::rt::begin_panic_fmt(&format_args!($fmt, $($arg)+), - &(file!(), line!(), __rust_unstable_column!())) + $crate::rt::begin_panic_fmt(&$crate::format_args!($fmt, $($arg)+), + &($crate::file!(), $crate::line!(), $crate::column!())) }); } @@ -113,7 +113,7 @@ macro_rules! panic { #[stable(feature = "rust1", since = "1.0.0")] #[allow_internal_unstable(print_internals)] macro_rules! print { - ($($arg:tt)*) => ($crate::io::_print(format_args!($($arg)*))); + ($($arg:tt)*) => ($crate::io::_print($crate::format_args!($($arg)*))); } /// Prints to the standard output, with a newline. @@ -147,7 +147,7 @@ macro_rules! print { macro_rules! println { () => ($crate::print!("\n")); ($($arg:tt)*) => ({ - $crate::io::_print(format_args_nl!($($arg)*)); + $crate::io::_print($crate::format_args_nl!($($arg)*)); }) } @@ -176,7 +176,7 @@ macro_rules! println { #[stable(feature = "eprint", since = "1.19.0")] #[allow_internal_unstable(print_internals)] macro_rules! eprint { - ($($arg:tt)*) => ($crate::io::_eprint(format_args!($($arg)*))); + ($($arg:tt)*) => ($crate::io::_eprint($crate::format_args!($($arg)*))); } /// Prints to the standard error, with a newline. @@ -206,7 +206,7 @@ macro_rules! eprint { macro_rules! eprintln { () => ($crate::eprint!("\n")); ($($arg:tt)*) => ({ - $crate::io::_eprint(format_args_nl!($($arg)*)); + $crate::io::_eprint($crate::format_args_nl!($($arg)*)); }) } @@ -337,7 +337,7 @@ macro_rules! eprintln { #[stable(feature = "dbg_macro", since = "1.32.0")] macro_rules! dbg { () => { - $crate::eprintln!("[{}:{}]", file!(), line!()); + $crate::eprintln!("[{}:{}]", $crate::file!(), $crate::line!()); }; ($val:expr) => { // Use of `match` here is intentional because it affects the lifetimes @@ -345,7 +345,7 @@ macro_rules! dbg { match $val { tmp => { $crate::eprintln!("[{}:{}] {} = {:#?}", - file!(), line!(), stringify!($val), &tmp); + $crate::file!(), $crate::line!(), $crate::stringify!($val), &tmp); tmp } } -- cgit 1.4.1-3-g733a5 From 263e3c59505a16e78b757e0ead3928a3e961a8ab Mon Sep 17 00:00:00 2001 From: Vadim Petrochenkov Date: Thu, 15 Aug 2019 22:58:57 +0300 Subject: Remove `__rust_unstable_column` --- src/libcore/macros.rs | 9 +-------- src/libcore/prelude/v1.rs | 1 - src/libstd/lib.rs | 2 -- src/libstd/macros.rs | 2 +- src/libstd/prelude/v1.rs | 1 - src/libsyntax_ext/lib.rs | 1 - src/libsyntax_pos/symbol.rs | 1 - src/test/ui/rust-unstable-column-gated.rs | 4 ---- src/test/ui/rust-unstable-column-gated.stderr | 11 ----------- 9 files changed, 2 insertions(+), 30 deletions(-) delete mode 100644 src/test/ui/rust-unstable-column-gated.rs delete mode 100644 src/test/ui/rust-unstable-column-gated.stderr (limited to 'src/libstd') diff --git a/src/libcore/macros.rs b/src/libcore/macros.rs index c41763756b9..e114f3af0c5 100644 --- a/src/libcore/macros.rs +++ b/src/libcore/macros.rs @@ -2,7 +2,7 @@ /// /// For details, see `std::macros`. #[macro_export] -#[allow_internal_unstable(core_panic, __rust_unstable_column)] +#[allow_internal_unstable(core_panic)] #[stable(feature = "core", since = "1.6.0")] macro_rules! panic { () => ( @@ -927,13 +927,6 @@ pub(crate) mod builtin { #[macro_export] macro_rules! column { () => { /* compiler built-in */ } } - /// Same as `column`, but less likely to be shadowed. - #[unstable(feature = "__rust_unstable_column", issue = "0", - reason = "internal implementation detail of the `panic` macro")] - #[rustc_builtin_macro] - #[macro_export] - macro_rules! __rust_unstable_column { () => { /* compiler built-in */ } } - /// Expands to the file name in which it was invoked. /// /// With [`line!`] and [`column!`], these macros provide debugging information for diff --git a/src/libcore/prelude/v1.rs b/src/libcore/prelude/v1.rs index 76240379040..7cc279a9ef2 100644 --- a/src/libcore/prelude/v1.rs +++ b/src/libcore/prelude/v1.rs @@ -56,7 +56,6 @@ pub use crate::hash::macros::Hash; #[stable(feature = "builtin_macro_prelude", since = "1.38.0")] #[doc(no_inline)] pub use crate::{ - __rust_unstable_column, asm, assert, cfg, diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs index 1f48315d3f8..898f5d17f65 100644 --- a/src/libstd/lib.rs +++ b/src/libstd/lib.rs @@ -228,7 +228,6 @@ // std is implemented with unstable features, many of which are internal // compiler details that will never be stable // NB: the following list is sorted to minimize merge conflicts. -#![feature(__rust_unstable_column)] #![feature(alloc_error_handler)] #![feature(alloc_layout_extra)] #![feature(allocator_api)] @@ -550,7 +549,6 @@ pub use core::{ option_env, stringify, // Unstable - __rust_unstable_column, asm, concat_idents, format_args_nl, diff --git a/src/libstd/macros.rs b/src/libstd/macros.rs index 9fafe26104a..cbeaf20b13a 100644 --- a/src/libstd/macros.rs +++ b/src/libstd/macros.rs @@ -53,7 +53,7 @@ /// ``` #[macro_export] #[stable(feature = "rust1", since = "1.0.0")] -#[allow_internal_unstable(__rust_unstable_column, libstd_sys_internals)] +#[allow_internal_unstable(libstd_sys_internals)] macro_rules! panic { () => ({ $crate::panic!("explicit panic") diff --git a/src/libstd/prelude/v1.rs b/src/libstd/prelude/v1.rs index 752c6202ee4..3e4cf91127f 100644 --- a/src/libstd/prelude/v1.rs +++ b/src/libstd/prelude/v1.rs @@ -40,7 +40,6 @@ pub use crate::result::Result::{self, Ok, Err}; #[stable(feature = "builtin_macro_prelude", since = "1.38.0")] #[doc(no_inline)] pub use core::prelude::v1::{ - __rust_unstable_column, asm, assert, cfg, diff --git a/src/libsyntax_ext/lib.rs b/src/libsyntax_ext/lib.rs index 0f3f5c0cd0e..5276d77817a 100644 --- a/src/libsyntax_ext/lib.rs +++ b/src/libsyntax_ext/lib.rs @@ -57,7 +57,6 @@ pub fn register_builtin_macros(resolver: &mut dyn syntax::ext::base::Resolver, e } register_bang! { - __rust_unstable_column: source_util::expand_column, asm: asm::expand_asm, assert: assert::expand_assert, cfg: cfg::expand_cfg, diff --git a/src/libsyntax_pos/symbol.rs b/src/libsyntax_pos/symbol.rs index 2d9556233d1..dafe15f3be0 100644 --- a/src/libsyntax_pos/symbol.rs +++ b/src/libsyntax_pos/symbol.rs @@ -610,7 +610,6 @@ symbols! { rust_eh_personality, rust_eh_unwind_resume, rust_oom, - __rust_unstable_column, rvalue_static_promotion, sanitizer_runtime, _Self, diff --git a/src/test/ui/rust-unstable-column-gated.rs b/src/test/ui/rust-unstable-column-gated.rs deleted file mode 100644 index 053806ead2d..00000000000 --- a/src/test/ui/rust-unstable-column-gated.rs +++ /dev/null @@ -1,4 +0,0 @@ -fn main() { - println!("{}", __rust_unstable_column!()); - //~^ ERROR use of unstable library feature '__rust_unstable_column' -} diff --git a/src/test/ui/rust-unstable-column-gated.stderr b/src/test/ui/rust-unstable-column-gated.stderr deleted file mode 100644 index 7db1b01fb0e..00000000000 --- a/src/test/ui/rust-unstable-column-gated.stderr +++ /dev/null @@ -1,11 +0,0 @@ -error[E0658]: use of unstable library feature '__rust_unstable_column': internal implementation detail of the `panic` macro - --> $DIR/rust-unstable-column-gated.rs:2:20 - | -LL | println!("{}", __rust_unstable_column!()); - | ^^^^^^^^^^^^^^^^^^^^^^ - | - = help: add `#![feature(__rust_unstable_column)]` to the crate attributes to enable - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0658`. -- cgit 1.4.1-3-g733a5 From 36b18a1901e50ab526fd03b5f4713c283f2e2fb6 Mon Sep 17 00:00:00 2001 From: Simon Sapin Date: Wed, 12 Jun 2019 20:02:01 +0200 Subject: Rename CollectionAllocError to TryReserveError --- src/liballoc/collections/mod.rs | 10 +++++----- src/liballoc/collections/vec_deque.rs | 16 ++++++++-------- src/liballoc/raw_vec.rs | 12 ++++++------ src/liballoc/string.rs | 14 +++++++------- src/liballoc/tests/string.rs | 2 +- src/liballoc/tests/vec.rs | 2 +- src/liballoc/tests/vec_deque.rs | 2 +- src/liballoc/vec.rs | 14 +++++++------- src/libstd/collections/hash/map.rs | 12 ++++++------ src/libstd/collections/hash/set.rs | 4 ++-- src/libstd/collections/mod.rs | 2 +- 11 files changed, 45 insertions(+), 45 deletions(-) (limited to 'src/libstd') diff --git a/src/liballoc/collections/mod.rs b/src/liballoc/collections/mod.rs index 5a33ddc14f0..48c3ed8a57d 100644 --- a/src/liballoc/collections/mod.rs +++ b/src/liballoc/collections/mod.rs @@ -46,7 +46,7 @@ use crate::alloc::{AllocErr, LayoutErr}; /// Augments `AllocErr` with a CapacityOverflow variant. #[derive(Clone, PartialEq, Eq, Debug)] #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] -pub enum CollectionAllocErr { +pub enum TryReserveError { /// Error due to the computed capacity exceeding the collection's maximum /// (usually `isize::MAX` bytes). CapacityOverflow, @@ -55,18 +55,18 @@ pub enum CollectionAllocErr { } #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] -impl From for CollectionAllocErr { +impl From for TryReserveError { #[inline] fn from(AllocErr: AllocErr) -> Self { - CollectionAllocErr::AllocErr + TryReserveError::AllocErr } } #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] -impl From for CollectionAllocErr { +impl From for TryReserveError { #[inline] fn from(_: LayoutErr) -> Self { - CollectionAllocErr::CapacityOverflow + TryReserveError::CapacityOverflow } } diff --git a/src/liballoc/collections/vec_deque.rs b/src/liballoc/collections/vec_deque.rs index 9240346ace9..2fc87413367 100644 --- a/src/liballoc/collections/vec_deque.rs +++ b/src/liballoc/collections/vec_deque.rs @@ -18,7 +18,7 @@ use core::ptr::{self, NonNull}; use core::slice; use core::hash::{Hash, Hasher}; -use crate::collections::CollectionAllocErr; +use crate::collections::TryReserveError; use crate::raw_vec::RawVec; use crate::vec::Vec; @@ -576,10 +576,10 @@ impl VecDeque { /// /// ``` /// #![feature(try_reserve)] - /// use std::collections::CollectionAllocErr; + /// use std::collections::TryReserveError; /// use std::collections::VecDeque; /// - /// fn process_data(data: &[u32]) -> Result, CollectionAllocErr> { + /// fn process_data(data: &[u32]) -> Result, TryReserveError> { /// let mut output = VecDeque::new(); /// /// // Pre-reserve the memory, exiting if we can't @@ -595,7 +595,7 @@ impl VecDeque { /// # process_data(&[1, 2, 3]).expect("why is the test harness OOMing on 12 bytes?"); /// ``` #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] - pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), TryReserveError> { self.try_reserve(additional) } @@ -614,10 +614,10 @@ impl VecDeque { /// /// ``` /// #![feature(try_reserve)] - /// use std::collections::CollectionAllocErr; + /// use std::collections::TryReserveError; /// use std::collections::VecDeque; /// - /// fn process_data(data: &[u32]) -> Result, CollectionAllocErr> { + /// fn process_data(data: &[u32]) -> Result, TryReserveError> { /// let mut output = VecDeque::new(); /// /// // Pre-reserve the memory, exiting if we can't @@ -633,12 +633,12 @@ impl VecDeque { /// # process_data(&[1, 2, 3]).expect("why is the test harness OOMing on 12 bytes?"); /// ``` #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] - pub fn try_reserve(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> { let old_cap = self.cap(); let used_cap = self.len() + 1; let new_cap = used_cap.checked_add(additional) .and_then(|needed_cap| needed_cap.checked_next_power_of_two()) - .ok_or(CollectionAllocErr::CapacityOverflow)?; + .ok_or(TryReserveError::CapacityOverflow)?; if new_cap > old_cap { self.buf.try_reserve_exact(used_cap, new_cap - used_cap)?; diff --git a/src/liballoc/raw_vec.rs b/src/liballoc/raw_vec.rs index 0abab45e920..fed5a16599d 100644 --- a/src/liballoc/raw_vec.rs +++ b/src/liballoc/raw_vec.rs @@ -8,7 +8,7 @@ use core::ptr::{self, NonNull, Unique}; use core::slice; use crate::alloc::{Alloc, Layout, Global, handle_alloc_error}; -use crate::collections::CollectionAllocErr::{self, *}; +use crate::collections::TryReserveError::{self, *}; use crate::boxed::Box; #[cfg(test)] @@ -385,7 +385,7 @@ impl RawVec { /// The same as `reserve_exact`, but returns on errors instead of panicking or aborting. pub fn try_reserve_exact(&mut self, used_capacity: usize, needed_extra_capacity: usize) - -> Result<(), CollectionAllocErr> { + -> Result<(), TryReserveError> { self.reserve_internal(used_capacity, needed_extra_capacity, Fallible, Exact) } @@ -422,7 +422,7 @@ impl RawVec { /// needed_extra_capacity` elements. This logic is used in amortized reserve methods. /// Returns `(new_capacity, new_alloc_size)`. fn amortized_new_size(&self, used_capacity: usize, needed_extra_capacity: usize) - -> Result { + -> Result { // Nothing we can really do about these checks :( let required_cap = used_capacity.checked_add(needed_extra_capacity) @@ -435,7 +435,7 @@ impl RawVec { /// The same as `reserve`, but returns on errors instead of panicking or aborting. pub fn try_reserve(&mut self, used_capacity: usize, needed_extra_capacity: usize) - -> Result<(), CollectionAllocErr> { + -> Result<(), TryReserveError> { self.reserve_internal(used_capacity, needed_extra_capacity, Fallible, Amortized) } @@ -640,7 +640,7 @@ impl RawVec { needed_extra_capacity: usize, fallibility: Fallibility, strategy: ReserveStrategy, - ) -> Result<(), CollectionAllocErr> { + ) -> Result<(), TryReserveError> { unsafe { use crate::alloc::AllocErr; @@ -737,7 +737,7 @@ unsafe impl<#[may_dangle] T, A: Alloc> Drop for RawVec { // all 4GB in user-space. e.g., PAE or x32 #[inline] -fn alloc_guard(alloc_size: usize) -> Result<(), CollectionAllocErr> { +fn alloc_guard(alloc_size: usize) -> Result<(), TryReserveError> { if mem::size_of::() < 8 && alloc_size > core::isize::MAX as usize { Err(CapacityOverflow) } else { diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs index eca726cd410..b65f191836e 100644 --- a/src/liballoc/string.rs +++ b/src/liballoc/string.rs @@ -56,7 +56,7 @@ use core::ptr; use core::str::{pattern::Pattern, lossy}; use crate::borrow::{Cow, ToOwned}; -use crate::collections::CollectionAllocErr; +use crate::collections::TryReserveError; use crate::boxed::Box; use crate::str::{self, from_boxed_utf8_unchecked, FromStr, Utf8Error, Chars}; use crate::vec::Vec; @@ -937,9 +937,9 @@ impl String { /// /// ``` /// #![feature(try_reserve)] - /// use std::collections::CollectionAllocErr; + /// use std::collections::TryReserveError; /// - /// fn process_data(data: &str) -> Result { + /// fn process_data(data: &str) -> Result { /// let mut output = String::new(); /// /// // Pre-reserve the memory, exiting if we can't @@ -953,7 +953,7 @@ impl String { /// # process_data("rust").expect("why is the test harness OOMing on 4 bytes?"); /// ``` #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] - pub fn try_reserve(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> { self.vec.try_reserve(additional) } @@ -975,9 +975,9 @@ impl String { /// /// ``` /// #![feature(try_reserve)] - /// use std::collections::CollectionAllocErr; + /// use std::collections::TryReserveError; /// - /// fn process_data(data: &str) -> Result { + /// fn process_data(data: &str) -> Result { /// let mut output = String::new(); /// /// // Pre-reserve the memory, exiting if we can't @@ -991,7 +991,7 @@ impl String { /// # process_data("rust").expect("why is the test harness OOMing on 4 bytes?"); /// ``` #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] - pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), TryReserveError> { self.vec.try_reserve_exact(additional) } diff --git a/src/liballoc/tests/string.rs b/src/liballoc/tests/string.rs index 765210e5aa6..4d2ea42fcae 100644 --- a/src/liballoc/tests/string.rs +++ b/src/liballoc/tests/string.rs @@ -1,5 +1,5 @@ use std::borrow::Cow; -use std::collections::CollectionAllocErr::*; +use std::collections::TryReserveError::*; use std::mem::size_of; use std::{usize, isize}; diff --git a/src/liballoc/tests/vec.rs b/src/liballoc/tests/vec.rs index 6e8ffe18522..c67ec32543b 100644 --- a/src/liballoc/tests/vec.rs +++ b/src/liballoc/tests/vec.rs @@ -2,7 +2,7 @@ use std::borrow::Cow; use std::mem::size_of; use std::{usize, isize}; use std::vec::{Drain, IntoIter}; -use std::collections::CollectionAllocErr::*; +use std::collections::TryReserveError::*; struct DropCounter<'a> { count: &'a mut u32, diff --git a/src/liballoc/tests/vec_deque.rs b/src/liballoc/tests/vec_deque.rs index 1bbcca97b3c..c7e743c2e94 100644 --- a/src/liballoc/tests/vec_deque.rs +++ b/src/liballoc/tests/vec_deque.rs @@ -1,6 +1,6 @@ use std::fmt::Debug; use std::collections::{VecDeque, vec_deque::Drain}; -use std::collections::CollectionAllocErr::*; +use std::collections::TryReserveError::*; use std::mem::size_of; use std::{usize, isize}; diff --git a/src/liballoc/vec.rs b/src/liballoc/vec.rs index dac04e4e624..d2798955c46 100644 --- a/src/liballoc/vec.rs +++ b/src/liballoc/vec.rs @@ -70,7 +70,7 @@ use core::ptr::{self, NonNull}; use core::slice::{self, SliceIndex}; use crate::borrow::{ToOwned, Cow}; -use crate::collections::CollectionAllocErr; +use crate::collections::TryReserveError; use crate::boxed::Box; use crate::raw_vec::RawVec; @@ -498,9 +498,9 @@ impl Vec { /// /// ``` /// #![feature(try_reserve)] - /// use std::collections::CollectionAllocErr; + /// use std::collections::TryReserveError; /// - /// fn process_data(data: &[u32]) -> Result, CollectionAllocErr> { + /// fn process_data(data: &[u32]) -> Result, TryReserveError> { /// let mut output = Vec::new(); /// /// // Pre-reserve the memory, exiting if we can't @@ -516,7 +516,7 @@ impl Vec { /// # process_data(&[1, 2, 3]).expect("why is the test harness OOMing on 12 bytes?"); /// ``` #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] - pub fn try_reserve(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> { self.buf.try_reserve(self.len, additional) } @@ -538,9 +538,9 @@ impl Vec { /// /// ``` /// #![feature(try_reserve)] - /// use std::collections::CollectionAllocErr; + /// use std::collections::TryReserveError; /// - /// fn process_data(data: &[u32]) -> Result, CollectionAllocErr> { + /// fn process_data(data: &[u32]) -> Result, TryReserveError> { /// let mut output = Vec::new(); /// /// // Pre-reserve the memory, exiting if we can't @@ -556,7 +556,7 @@ impl Vec { /// # process_data(&[1, 2, 3]).expect("why is the test harness OOMing on 12 bytes?"); /// ``` #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] - pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve_exact(&mut self, additional: usize) -> Result<(), TryReserveError> { self.buf.try_reserve_exact(self.len, additional) } diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs index 1e28ee8da26..8581cf13b08 100644 --- a/src/libstd/collections/hash/map.rs +++ b/src/libstd/collections/hash/map.rs @@ -6,7 +6,7 @@ use hashbrown::hash_map as base; use crate::borrow::Borrow; use crate::cell::Cell; -use crate::collections::CollectionAllocErr; +use crate::collections::TryReserveError; use crate::fmt::{self, Debug}; #[allow(deprecated)] use crate::hash::{BuildHasher, Hash, Hasher, SipHasher13}; @@ -588,7 +588,7 @@ where /// ``` #[inline] #[unstable(feature = "try_reserve", reason = "new API", issue = "48043")] - pub fn try_reserve(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> { self.base .try_reserve(additional) .map_err(map_collection_alloc_err) @@ -2542,10 +2542,10 @@ fn map_entry<'a, K: 'a, V: 'a>(raw: base::RustcEntry<'a, K, V>) -> Entry<'a, K, } #[inline] -fn map_collection_alloc_err(err: hashbrown::CollectionAllocErr) -> CollectionAllocErr { +fn map_collection_alloc_err(err: hashbrown::CollectionAllocErr) -> TryReserveError { match err { - hashbrown::CollectionAllocErr::CapacityOverflow => CollectionAllocErr::CapacityOverflow, - hashbrown::CollectionAllocErr::AllocErr => CollectionAllocErr::AllocErr, + hashbrown::CollectionAllocErr::CapacityOverflow => TryReserveError::CapacityOverflow, + hashbrown::CollectionAllocErr::AllocErr => TryReserveError::AllocErr, } } @@ -2605,7 +2605,7 @@ mod test_map { use super::RandomState; use crate::cell::RefCell; use rand::{thread_rng, Rng}; - use realstd::collections::CollectionAllocErr::*; + use realstd::collections::TryReserveError::*; use realstd::usize; // https://github.com/rust-lang/rust/issues/62301 diff --git a/src/libstd/collections/hash/set.rs b/src/libstd/collections/hash/set.rs index d243412405a..26db651ef89 100644 --- a/src/libstd/collections/hash/set.rs +++ b/src/libstd/collections/hash/set.rs @@ -1,5 +1,5 @@ use crate::borrow::Borrow; -use crate::collections::CollectionAllocErr; +use crate::collections::TryReserveError; use crate::fmt; use crate::hash::{Hash, BuildHasher}; use crate::iter::{Chain, FromIterator, FusedIterator}; @@ -383,7 +383,7 @@ impl HashSet /// ``` #[inline] #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] - pub fn try_reserve(&mut self, additional: usize) -> Result<(), CollectionAllocErr> { + pub fn try_reserve(&mut self, additional: usize) -> Result<(), TryReserveError> { self.map.try_reserve(additional) } diff --git a/src/libstd/collections/mod.rs b/src/libstd/collections/mod.rs index 15c2532f8b4..f5957466be8 100644 --- a/src/libstd/collections/mod.rs +++ b/src/libstd/collections/mod.rs @@ -427,7 +427,7 @@ pub use self::hash_map::HashMap; pub use self::hash_set::HashSet; #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] -pub use alloc_crate::collections::CollectionAllocErr; +pub use alloc_crate::collections::TryReserveError; mod hash; -- cgit 1.4.1-3-g733a5 From a92c29b2385f4999d4cd9ef7589f1fc07ef9cdfb Mon Sep 17 00:00:00 2001 From: Simon Sapin Date: Wed, 12 Jun 2019 18:31:32 +0200 Subject: Update hashbrown to 0.5.0 --- Cargo.lock | 12 ++---------- src/libstd/Cargo.toml | 2 +- src/libstd/collections/hash/map.rs | 2 +- 3 files changed, 4 insertions(+), 12 deletions(-) (limited to 'src/libstd') diff --git a/Cargo.lock b/Cargo.lock index ab6731e4d43..070858cd185 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1138,19 +1138,12 @@ dependencies = [ [[package]] name = "hashbrown" -version = "0.4.0" +version = "0.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" dependencies = [ "compiler_builtins 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)", "rustc-std-workspace-alloc 1.0.0", "rustc-std-workspace-core 1.0.0", -] - -[[package]] -name = "hashbrown" -version = "0.5.0" -source = "registry+https://github.com/rust-lang/crates.io-index" -dependencies = [ "serde 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)", ] @@ -3534,7 +3527,7 @@ dependencies = [ "core 0.0.0", "dlmalloc 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)", "fortanix-sgx-abi 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)", - "hashbrown 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)", + "hashbrown 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)", "libc 0.2.60 (registry+https://github.com/rust-lang/crates.io-index)", "panic_abort 0.0.0", "panic_unwind 0.0.0", @@ -4450,7 +4443,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index" "checksum globset 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ef4feaabe24a0a658fd9cf4a9acf6ed284f045c77df0f49020ba3245cfb7b454" "checksum h2 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)" = "a539b63339fbbb00e081e84b6e11bd1d9634a82d91da2984a18ac74a8823f392" "checksum handlebars 2.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "df044dd42cdb7e32f28557b661406fc0f2494be75199779998810dbc35030e0d" -"checksum hashbrown 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9529213c67695ca2d146e6f263b7b72df8fa973368beadf767e8ed80c03f2f36" "checksum hashbrown 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e1de41fb8dba9714efd92241565cdff73f78508c95697dd56787d3cba27e2353" "checksum heck 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ea04fa3ead4e05e51a7c806fc07271fdbde4e246a6c6d1efd52e72230b771b82" "checksum hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "805026a5d0141ffc30abb3be3173848ad46a1b1664fe632428479619a3644d77" diff --git a/src/libstd/Cargo.toml b/src/libstd/Cargo.toml index 5334c4dfc68..3288d0b4df2 100644 --- a/src/libstd/Cargo.toml +++ b/src/libstd/Cargo.toml @@ -23,7 +23,7 @@ libc = { version = "0.2.51", default-features = false, features = ['rustc-dep-of compiler_builtins = { version = "0.1.16" } profiler_builtins = { path = "../libprofiler_builtins", optional = true } unwind = { path = "../libunwind" } -hashbrown = { version = "0.4.0", features = ['rustc-dep-of-std'] } +hashbrown = { version = "0.5.0", features = ['rustc-dep-of-std'] } [dependencies.backtrace] version = "0.3.34" diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs index 8581cf13b08..db637a108cb 100644 --- a/src/libstd/collections/hash/map.rs +++ b/src/libstd/collections/hash/map.rs @@ -2545,7 +2545,7 @@ fn map_entry<'a, K: 'a, V: 'a>(raw: base::RustcEntry<'a, K, V>) -> Entry<'a, K, fn map_collection_alloc_err(err: hashbrown::CollectionAllocErr) -> TryReserveError { match err { hashbrown::CollectionAllocErr::CapacityOverflow => TryReserveError::CapacityOverflow, - hashbrown::CollectionAllocErr::AllocErr => TryReserveError::AllocErr, + hashbrown::CollectionAllocErr::AllocErr { .. } => TryReserveError::AllocErr, } } -- cgit 1.4.1-3-g733a5 From 59a340963fa5d8b5507d95cd015f7ca2855ba151 Mon Sep 17 00:00:00 2001 From: Simon Sapin Date: Wed, 12 Jun 2019 18:47:58 +0200 Subject: Add the Layout of the failed allocation to TryReserveError::AllocError MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit … and add a separately-unstable field to force non-exhaustive matching (`#[non_exhaustive]` is no implemented yet on enum variants) so that we have the option to later expose the allocator’s error value. CC https://github.com/rust-lang/wg-allocators/issues/23 --- src/liballoc/collections/mod.rs | 25 ++++++++++++++----------- src/liballoc/lib.rs | 1 + src/liballoc/raw_vec.rs | 20 +++++++++++--------- src/liballoc/tests/string.rs | 12 ++++++------ src/liballoc/tests/vec.rs | 16 ++++++++-------- src/liballoc/tests/vec_deque.rs | 12 ++++++------ src/libstd/collections/hash/map.rs | 7 +++++-- src/libstd/lib.rs | 1 + 8 files changed, 52 insertions(+), 42 deletions(-) (limited to 'src/libstd') diff --git a/src/liballoc/collections/mod.rs b/src/liballoc/collections/mod.rs index 48c3ed8a57d..f1f22fe48c5 100644 --- a/src/liballoc/collections/mod.rs +++ b/src/liballoc/collections/mod.rs @@ -41,25 +41,28 @@ pub use linked_list::LinkedList; #[doc(no_inline)] pub use vec_deque::VecDeque; -use crate::alloc::{AllocErr, LayoutErr}; +use crate::alloc::{Layout, LayoutErr}; -/// Augments `AllocErr` with a CapacityOverflow variant. +/// The error type for `try_reserve` methods. #[derive(Clone, PartialEq, Eq, Debug)] #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] pub enum TryReserveError { /// Error due to the computed capacity exceeding the collection's maximum /// (usually `isize::MAX` bytes). CapacityOverflow, - /// Error due to the allocator (see the `AllocErr` type's docs). - AllocErr, -} -#[unstable(feature = "try_reserve", reason = "new API", issue="48043")] -impl From for TryReserveError { - #[inline] - fn from(AllocErr: AllocErr) -> Self { - TryReserveError::AllocErr - } + /// The memory allocator returned an error + AllocError { + /// The layout of allocation request that failed + layout: Layout, + + #[doc(hidden)] + #[unstable(feature = "container_error_extra", issue = "0", reason = "\ + Enable exposing the allocator’s custom error value \ + if an associated type is added in the future: \ + https://github.com/rust-lang/wg-allocators/issues/23")] + non_exhaustive: (), + }, } #[unstable(feature = "try_reserve", reason = "new API", issue="48043")] diff --git a/src/liballoc/lib.rs b/src/liballoc/lib.rs index 7421beddd95..4a48945adc3 100644 --- a/src/liballoc/lib.rs +++ b/src/liballoc/lib.rs @@ -87,6 +87,7 @@ #![feature(const_in_array_repeat_expressions)] #![feature(dispatch_from_dyn)] #![feature(core_intrinsics)] +#![feature(container_error_extra)] #![feature(dropck_eyepatch)] #![feature(exact_size_is_empty)] #![feature(fmt_internals)] diff --git a/src/liballoc/raw_vec.rs b/src/liballoc/raw_vec.rs index fed5a16599d..bc8a38f6b3a 100644 --- a/src/liballoc/raw_vec.rs +++ b/src/liballoc/raw_vec.rs @@ -7,7 +7,7 @@ use core::ops::Drop; use core::ptr::{self, NonNull, Unique}; use core::slice; -use crate::alloc::{Alloc, Layout, Global, handle_alloc_error}; +use crate::alloc::{Alloc, Layout, Global, AllocErr, handle_alloc_error}; use crate::collections::TryReserveError::{self, *}; use crate::boxed::Box; @@ -413,7 +413,7 @@ impl RawVec { pub fn reserve_exact(&mut self, used_capacity: usize, needed_extra_capacity: usize) { match self.reserve_internal(used_capacity, needed_extra_capacity, Infallible, Exact) { Err(CapacityOverflow) => capacity_overflow(), - Err(AllocErr) => unreachable!(), + Err(AllocError { .. }) => unreachable!(), Ok(()) => { /* yay */ } } } @@ -494,7 +494,7 @@ impl RawVec { pub fn reserve(&mut self, used_capacity: usize, needed_extra_capacity: usize) { match self.reserve_internal(used_capacity, needed_extra_capacity, Infallible, Amortized) { Err(CapacityOverflow) => capacity_overflow(), - Err(AllocErr) => unreachable!(), + Err(AllocError { .. }) => unreachable!(), Ok(()) => { /* yay */ } } } @@ -642,8 +642,6 @@ impl RawVec { strategy: ReserveStrategy, ) -> Result<(), TryReserveError> { unsafe { - use crate::alloc::AllocErr; - // NOTE: we don't early branch on ZSTs here because we want this // to actually catch "asking for more than usize::MAX" in that case. // If we make it past the first branch then we are guaranteed to @@ -672,12 +670,16 @@ impl RawVec { None => self.a.alloc(new_layout), }; - match (&res, fallibility) { + let ptr = match (res, fallibility) { (Err(AllocErr), Infallible) => handle_alloc_error(new_layout), - _ => {} - } + (Err(AllocErr), Fallible) => return Err(TryReserveError::AllocError { + layout: new_layout, + non_exhaustive: (), + }), + (Ok(ptr), _) => ptr, + }; - self.ptr = res?.cast().into(); + self.ptr = ptr.cast().into(); self.cap = new_cap; Ok(()) diff --git a/src/liballoc/tests/string.rs b/src/liballoc/tests/string.rs index 4d2ea42fcae..55edf56345b 100644 --- a/src/liballoc/tests/string.rs +++ b/src/liballoc/tests/string.rs @@ -566,11 +566,11 @@ fn test_try_reserve() { } else { panic!("usize::MAX should trigger an overflow!") } } else { // Check isize::MAX + 1 is an OOM - if let Err(AllocErr) = empty_string.try_reserve(MAX_CAP + 1) { + if let Err(AllocError { .. }) = empty_string.try_reserve(MAX_CAP + 1) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } // Check usize::MAX is an OOM - if let Err(AllocErr) = empty_string.try_reserve(MAX_USIZE) { + if let Err(AllocError { .. }) = empty_string.try_reserve(MAX_USIZE) { } else { panic!("usize::MAX should trigger an OOM!") } } } @@ -590,7 +590,7 @@ fn test_try_reserve() { if let Err(CapacityOverflow) = ten_bytes.try_reserve(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_bytes.try_reserve(MAX_CAP - 9) { + if let Err(AllocError { .. }) = ten_bytes.try_reserve(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } // Should always overflow in the add-to-len @@ -629,10 +629,10 @@ fn test_try_reserve_exact() { if let Err(CapacityOverflow) = empty_string.try_reserve_exact(MAX_USIZE) { } else { panic!("usize::MAX should trigger an overflow!") } } else { - if let Err(AllocErr) = empty_string.try_reserve_exact(MAX_CAP + 1) { + if let Err(AllocError { .. }) = empty_string.try_reserve_exact(MAX_CAP + 1) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } - if let Err(AllocErr) = empty_string.try_reserve_exact(MAX_USIZE) { + if let Err(AllocError { .. }) = empty_string.try_reserve_exact(MAX_USIZE) { } else { panic!("usize::MAX should trigger an OOM!") } } } @@ -651,7 +651,7 @@ fn test_try_reserve_exact() { if let Err(CapacityOverflow) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { + if let Err(AllocError { .. }) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } if let Err(CapacityOverflow) = ten_bytes.try_reserve_exact(MAX_USIZE) { diff --git a/src/liballoc/tests/vec.rs b/src/liballoc/tests/vec.rs index c67ec32543b..29a22aa0315 100644 --- a/src/liballoc/tests/vec.rs +++ b/src/liballoc/tests/vec.rs @@ -1121,11 +1121,11 @@ fn test_try_reserve() { } else { panic!("usize::MAX should trigger an overflow!") } } else { // Check isize::MAX + 1 is an OOM - if let Err(AllocErr) = empty_bytes.try_reserve(MAX_CAP + 1) { + if let Err(AllocError { .. }) = empty_bytes.try_reserve(MAX_CAP + 1) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } // Check usize::MAX is an OOM - if let Err(AllocErr) = empty_bytes.try_reserve(MAX_USIZE) { + if let Err(AllocError { .. }) = empty_bytes.try_reserve(MAX_USIZE) { } else { panic!("usize::MAX should trigger an OOM!") } } } @@ -1145,7 +1145,7 @@ fn test_try_reserve() { if let Err(CapacityOverflow) = ten_bytes.try_reserve(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_bytes.try_reserve(MAX_CAP - 9) { + if let Err(AllocError { .. }) = ten_bytes.try_reserve(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } // Should always overflow in the add-to-len @@ -1168,7 +1168,7 @@ fn test_try_reserve() { if let Err(CapacityOverflow) = ten_u32s.try_reserve(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_u32s.try_reserve(MAX_CAP/4 - 9) { + if let Err(AllocError { .. }) = ten_u32s.try_reserve(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } // Should fail in the mul-by-size @@ -1209,10 +1209,10 @@ fn test_try_reserve_exact() { if let Err(CapacityOverflow) = empty_bytes.try_reserve_exact(MAX_USIZE) { } else { panic!("usize::MAX should trigger an overflow!") } } else { - if let Err(AllocErr) = empty_bytes.try_reserve_exact(MAX_CAP + 1) { + if let Err(AllocError { .. }) = empty_bytes.try_reserve_exact(MAX_CAP + 1) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } - if let Err(AllocErr) = empty_bytes.try_reserve_exact(MAX_USIZE) { + if let Err(AllocError { .. }) = empty_bytes.try_reserve_exact(MAX_USIZE) { } else { panic!("usize::MAX should trigger an OOM!") } } } @@ -1231,7 +1231,7 @@ fn test_try_reserve_exact() { if let Err(CapacityOverflow) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { + if let Err(AllocError { .. }) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } if let Err(CapacityOverflow) = ten_bytes.try_reserve_exact(MAX_USIZE) { @@ -1252,7 +1252,7 @@ fn test_try_reserve_exact() { if let Err(CapacityOverflow) = ten_u32s.try_reserve_exact(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_u32s.try_reserve_exact(MAX_CAP/4 - 9) { + if let Err(AllocError { .. }) = ten_u32s.try_reserve_exact(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } if let Err(CapacityOverflow) = ten_u32s.try_reserve_exact(MAX_USIZE - 20) { diff --git a/src/liballoc/tests/vec_deque.rs b/src/liballoc/tests/vec_deque.rs index c7e743c2e94..d49b553fc02 100644 --- a/src/liballoc/tests/vec_deque.rs +++ b/src/liballoc/tests/vec_deque.rs @@ -1168,7 +1168,7 @@ fn test_try_reserve() { // VecDeque starts with capacity 7, always adds 1 to the capacity // and also rounds the number to next power of 2 so this is the // furthest we can go without triggering CapacityOverflow - if let Err(AllocErr) = empty_bytes.try_reserve(MAX_CAP) { + if let Err(AllocError { .. }) = empty_bytes.try_reserve(MAX_CAP) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } } @@ -1188,7 +1188,7 @@ fn test_try_reserve() { if let Err(CapacityOverflow) = ten_bytes.try_reserve(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_bytes.try_reserve(MAX_CAP - 9) { + if let Err(AllocError { .. }) = ten_bytes.try_reserve(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } // Should always overflow in the add-to-len @@ -1211,7 +1211,7 @@ fn test_try_reserve() { if let Err(CapacityOverflow) = ten_u32s.try_reserve(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_u32s.try_reserve(MAX_CAP/4 - 9) { + if let Err(AllocError { .. }) = ten_u32s.try_reserve(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } // Should fail in the mul-by-size @@ -1256,7 +1256,7 @@ fn test_try_reserve_exact() { // VecDeque starts with capacity 7, always adds 1 to the capacity // and also rounds the number to next power of 2 so this is the // furthest we can go without triggering CapacityOverflow - if let Err(AllocErr) = empty_bytes.try_reserve_exact(MAX_CAP) { + if let Err(AllocError { .. }) = empty_bytes.try_reserve_exact(MAX_CAP) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } } @@ -1275,7 +1275,7 @@ fn test_try_reserve_exact() { if let Err(CapacityOverflow) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { + if let Err(AllocError { .. }) = ten_bytes.try_reserve_exact(MAX_CAP - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } if let Err(CapacityOverflow) = ten_bytes.try_reserve_exact(MAX_USIZE) { @@ -1296,7 +1296,7 @@ fn test_try_reserve_exact() { if let Err(CapacityOverflow) = ten_u32s.try_reserve_exact(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an overflow!"); } } else { - if let Err(AllocErr) = ten_u32s.try_reserve_exact(MAX_CAP/4 - 9) { + if let Err(AllocError { .. }) = ten_u32s.try_reserve_exact(MAX_CAP/4 - 9) { } else { panic!("isize::MAX + 1 should trigger an OOM!") } } if let Err(CapacityOverflow) = ten_u32s.try_reserve_exact(MAX_USIZE - 20) { diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs index db637a108cb..a0538986a22 100644 --- a/src/libstd/collections/hash/map.rs +++ b/src/libstd/collections/hash/map.rs @@ -2545,7 +2545,10 @@ fn map_entry<'a, K: 'a, V: 'a>(raw: base::RustcEntry<'a, K, V>) -> Entry<'a, K, fn map_collection_alloc_err(err: hashbrown::CollectionAllocErr) -> TryReserveError { match err { hashbrown::CollectionAllocErr::CapacityOverflow => TryReserveError::CapacityOverflow, - hashbrown::CollectionAllocErr::AllocErr { .. } => TryReserveError::AllocErr, + hashbrown::CollectionAllocErr::AllocErr { layout } => TryReserveError::AllocError { + layout, + non_exhaustive: (), + }, } } @@ -3405,7 +3408,7 @@ mod test_map { panic!("usize::MAX should trigger an overflow!"); } - if let Err(AllocErr) = empty_bytes.try_reserve(MAX_USIZE / 8) { + if let Err(AllocError { .. }) = empty_bytes.try_reserve(MAX_USIZE / 8) { } else { panic!("usize::MAX / 8 should trigger an OOM!") } diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs index 1f48315d3f8..760d92f1d7b 100644 --- a/src/libstd/lib.rs +++ b/src/libstd/lib.rs @@ -251,6 +251,7 @@ #![feature(concat_idents)] #![feature(const_cstr_unchecked)] #![feature(const_raw_ptr_deref)] +#![feature(container_error_extra)] #![feature(core_intrinsics)] #![feature(custom_test_frameworks)] #![feature(doc_alias)] -- cgit 1.4.1-3-g733a5