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Auto merge of #44802 - sfackler:vecdeque-oob, r=Gankro
Fix capacity comparison in reserve You can otherwise end up in a situation where you don't actually resize but still call into handle_cap_increase which then corrupts head/tail. Closes #44800 Not totally sure the right way to write a test for this - there are some debug asserts the old bad behavior will hit but we don't build the stdlib with debug assertions by default. r? @gankro
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| // Copyright 2015 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. | ||
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| #![feature(global_allocator, alloc_system, allocator_api)] | ||
| extern crate alloc_system; | ||
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| use std::collections::VecDeque; | ||
| use alloc_system::System; | ||
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| #[global_allocator] | ||
| static ALLOCATOR: System = System; | ||
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| fn main() { | ||
| let mut deque = VecDeque::with_capacity(32); | ||
| deque.push_front(0); | ||
| deque.reserve(31); | ||
| deque.push_back(0); | ||
| } |