mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-20 14:41:58 +00:00
30 lines
768 B
Rust
30 lines
768 B
Rust
#![warn(clippy::verbose_file_reads)]
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use std::env::temp_dir;
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use std::fs::File;
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use std::io::Read;
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struct Struct;
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// To make sure we only warn on File::{read_to_end, read_to_string} calls
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impl Struct {
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pub fn read_to_end(&self) {}
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pub fn read_to_string(&self) {}
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}
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fn main() -> std::io::Result<()> {
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let path = "foo.txt";
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// Lint shouldn't catch this
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let s = Struct;
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s.read_to_end();
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s.read_to_string();
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// Should catch this
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let mut f = File::open(path)?;
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let mut buffer = Vec::new();
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f.read_to_end(&mut buffer)?;
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//~^ ERROR: use of `File::read_to_end`
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// ...and this
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let mut string_buffer = String::new();
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f.read_to_string(&mut string_buffer)?;
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//~^ ERROR: use of `File::read_to_string`
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Ok(())
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}
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