4808561c45
When matching against strings/slices, we call the comparison function for strings, which takes two string slices by value. The slices are passed in memory, and currently we just pass in a pointer to the original slice. That can cause misoptimizations because we emit a call to llvm.lifetime.end for all by-value arguments at the end of a function, which in this case marks the original slice as dead. So we need to properly create copies of the slices to pass them to the comparison function. Fixes #22008
19 lines
611 B
Rust
19 lines
611 B
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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pub fn main() {
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let command = "a";
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match command {
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"foo" => println!("foo"),
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_ => println!("{}", command),
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}
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}
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