61 lines
1.4 KiB
Rust
61 lines
1.4 KiB
Rust
#![warn(clippy::no_effect_replace)]
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fn main() {
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let _ = "12345".replace('1', "1");
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//~^ ERROR: replacing text with itself
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//~| NOTE: `-D clippy::no-effect-replace` implied by `-D warnings`
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let _ = "12345".replace("12", "12");
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//~^ ERROR: replacing text with itself
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let _ = String::new().replace("12", "12");
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//~^ ERROR: replacing text with itself
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let _ = "12345".replacen('1', "1", 1);
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//~^ ERROR: replacing text with itself
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let _ = "12345".replacen("12", "12", 1);
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//~^ ERROR: replacing text with itself
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let _ = String::new().replacen("12", "12", 1);
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//~^ ERROR: replacing text with itself
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let _ = "12345".replace("12", "22");
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let _ = "12345".replacen("12", "22", 1);
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let mut x = X::default();
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let _ = "hello".replace(&x.f(), &x.f());
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//~^ ERROR: replacing text with itself
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let _ = "hello".replace(&x.f(), &x.ff());
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let _ = "hello".replace(&y(), &y());
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//~^ ERROR: replacing text with itself
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let _ = "hello".replace(&y(), &z());
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let _ = Replaceme.replace("a", "a");
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}
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#[derive(Default)]
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struct X {}
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impl X {
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fn f(&mut self) -> String {
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"he".to_string()
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}
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fn ff(&mut self) -> String {
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"hh".to_string()
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}
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}
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fn y() -> String {
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"he".to_string()
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}
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fn z() -> String {
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"hh".to_string()
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}
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struct Replaceme;
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impl Replaceme {
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pub fn replace(&mut self, a: &str, b: &str) -> Self {
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Self
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}
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}
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