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allow BufReader::peek to be called on unsized types #129675
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @workingjubilee (or someone else) some time within the next two weeks. Please see the contribution instructions for more information. Namely, in order to ensure the minimum review times lag, PR authors and assigned reviewers should ensure that the review label (
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where | ||
R: ?Sized, |
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where | |
R: ?Sized, |
R is already ?Sized. What does this change? |
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@workingjubilee previously namely, this code should run now: #![feature(bufreader_peek)]
use std::io::{Read, BufReader, stdin};
fn main() {
let r1 = BufReader::new(stdin());
let r2: Box<BufReader<dyn Read>> = Box::new(r1);
println!("{:?}", r2.peek());
} |
OH, I see the block change now. |
@bors r+ rollup |
…d, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
…kingjubilee Rollup of 9 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#127912 (std: make `thread::current` available in all `thread_local!` destructors) - rust-lang#128166 (Improved `checked_isqrt` and `isqrt` methods) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129366 (linker: Synchronize native library search in rustc and linker) - rust-lang#129527 (Don't use `TyKind` in a lint) - rust-lang#129534 (Deny `wasm_c_abi` lint to nudge the last 25%) - rust-lang#129640 (Re-enable android tests/benches in alloc/core) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) r? `@ghost` `@rustbot` modify labels: rollup
…d, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
…kingjubilee Rollup of 8 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129366 (linker: Synchronize native library search in rustc and linker) - rust-lang#129527 (Don't use `TyKind` in a lint) - rust-lang#129534 (Deny `wasm_c_abi` lint to nudge the last 25%) - rust-lang#129640 (Re-enable android tests/benches in alloc/core) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129731 (Allow running `./x.py test compiler`) r? `@ghost` `@rustbot` modify labels: rollup
…kingjubilee Rollup of 8 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129366 (linker: Synchronize native library search in rustc and linker) - rust-lang#129527 (Don't use `TyKind` in a lint) - rust-lang#129534 (Deny `wasm_c_abi` lint to nudge the last 25%) - rust-lang#129640 (Re-enable android tests/benches in alloc/core) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129731 (Allow running `./x.py test compiler`) r? `@ghost` `@rustbot` modify labels: rollup
…kingjubilee Rollup of 8 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129366 (linker: Synchronize native library search in rustc and linker) - rust-lang#129527 (Don't use `TyKind` in a lint) - rust-lang#129534 (Deny `wasm_c_abi` lint to nudge the last 25%) - rust-lang#129640 (Re-enable android tests/benches in alloc/core) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129731 (Allow running `./x.py test compiler`) r? `@ghost` `@rustbot` modify labels: rollup
…kingjubilee Rollup of 8 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129366 (linker: Synchronize native library search in rustc and linker) - rust-lang#129527 (Don't use `TyKind` in a lint) - rust-lang#129534 (Deny `wasm_c_abi` lint to nudge the last 25%) - rust-lang#129640 (Re-enable android tests/benches in alloc/core) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129731 (Allow running `./x.py test compiler`) r? `@ghost` `@rustbot` modify labels: rollup
…d, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
…kingjubilee Rollup of 10 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#127897 (add `aarch64_unknown_nto_qnx700` target - QNX 7.0 support for aarch64le) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129642 (Bump backtrace to 0.3.74~ish) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129723 (Simplify some extern providers) - rust-lang#129724 (Remove `Option<!>` return types.) - rust-lang#129725 (Stop using `ty::GenericPredicates` for non-predicates_of queries) - rust-lang#129733 (Subtree update of `rust-analyzer`) - rust-lang#129754 (wasi: Fix sleeping for `Duration::MAX`) r? `@ghost` `@rustbot` modify labels: rollup
…d, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
…kingjubilee Rollup of 9 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129642 (Bump backtrace to 0.3.74~ish) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129723 (Simplify some extern providers) - rust-lang#129724 (Remove `Option<!>` return types.) - rust-lang#129725 (Stop using `ty::GenericPredicates` for non-predicates_of queries) - rust-lang#129733 (Subtree update of `rust-analyzer`) - rust-lang#129751 (interpret/visitor: make memory order iteration slightly more efficient) r? `@ghost` `@rustbot` modify labels: rollup
…kingjubilee Rollup of 9 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129642 (Bump backtrace to 0.3.74~ish) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129723 (Simplify some extern providers) - rust-lang#129724 (Remove `Option<!>` return types.) - rust-lang#129725 (Stop using `ty::GenericPredicates` for non-predicates_of queries) - rust-lang#129733 (Subtree update of `rust-analyzer`) - rust-lang#129751 (interpret/visitor: make memory order iteration slightly more efficient) r? `@ghost` `@rustbot` modify labels: rollup
…kingjubilee Rollup of 9 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129642 (Bump backtrace to 0.3.74~ish) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129723 (Simplify some extern providers) - rust-lang#129724 (Remove `Option<!>` return types.) - rust-lang#129725 (Stop using `ty::GenericPredicates` for non-predicates_of queries) - rust-lang#129733 (Subtree update of `rust-analyzer`) - rust-lang#129751 (interpret/visitor: make memory order iteration slightly more efficient) r? `@ghost` `@rustbot` modify labels: rollup
…d, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
…kingjubilee Rollup of 16 pull requests Successful merges: - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129678 (Deny imports of `rustc_type_ir::inherent` outside of type ir + new trait solver) - rust-lang#129723 (Simplify some extern providers) - rust-lang#129724 (Remove `Option<!>` return types.) - rust-lang#129725 (Stop using `ty::GenericPredicates` for non-predicates_of queries) - rust-lang#129730 (f32 docs: define 'arithmetic' operations) - rust-lang#129749 (llvm-wrapper: adapt for LLVM API changes) - rust-lang#129757 (Add a test for trait solver overflow in MIR inliner cycle detection) - rust-lang#129760 (Make the "detect-old-time" UI test more representative) - rust-lang#129762 (Update the `wasm-component-ld` binary dependency) - rust-lang#129767 (Remove `#[macro_use] extern crate tracing`, round 4) - rust-lang#129774 (Remove `#[macro_use] extern crate tracing` from rustdoc and rustfmt) - rust-lang#129780 (add crashtests for several old unfixed ICEs) - rust-lang#129782 (couple more crash tests) - rust-lang#129791 (mark joboet as on vacation) r? `@ghost` `@rustbot` modify labels: rollup
…d, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
…d, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
…iaskrgr Rollup of 15 pull requests Successful merges: - rust-lang#120221 (Don't make statement nonterminals match pattern nonterminals) - rust-lang#126183 (Separate core search logic with search ui) - rust-lang#129123 (rustdoc-json: Add test for `Self` type) - rust-lang#129366 (linker: Synchronize native library search in rustc and linker) - rust-lang#129527 (Don't use `TyKind` in a lint) - rust-lang#129534 (Deny `wasm_c_abi` lint to nudge the last 25%) - rust-lang#129640 (Re-enable android tests/benches in alloc/core) - rust-lang#129642 (Bump backtrace to 0.3.74~ish) - rust-lang#129675 (allow BufReader::peek to be called on unsized types) - rust-lang#129723 (Simplify some extern providers) - rust-lang#129724 (Remove `Option<!>` return types.) - rust-lang#129725 (Stop using `ty::GenericPredicates` for non-predicates_of queries) - rust-lang#129731 (Allow running `./x.py test compiler`) - rust-lang#129751 (interpret/visitor: make memory order iteration slightly more efficient) - rust-lang#129754 (wasi: Fix sleeping for `Duration::MAX`) r? `@ghost` `@rustbot` modify labels: rollup
Rollup merge of rust-lang#129675 - lolbinarycat:bufreader_peek_unsized, r=workingjubilee allow BufReader::peek to be called on unsized types rust-lang#128405
#128405