mirror of
https://github.com/rust-lang/rust-clippy
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71 lines
2.6 KiB
Rust
71 lines
2.6 KiB
Rust
//@no-rustfix: overlapping suggestions
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#![warn(clippy::suspicious_to_owned)]
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#![warn(clippy::implicit_clone)]
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#![allow(clippy::redundant_clone)]
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use std::borrow::Cow;
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use std::ffi::{CStr, c_char};
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fn main() {
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let moo = "Moooo";
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let c_moo = b"Moooo\0";
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let c_moo_ptr = c_moo.as_ptr() as *const c_char;
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let moos = ['M', 'o', 'o'];
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let moos_vec = moos.to_vec();
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// we expect this to be linted
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let cow = Cow::Borrowed(moo);
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let _ = cow.to_owned();
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//~^ ERROR: this `to_owned` call clones the Cow<'_, str> itself and does not cause the
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//~| NOTE: `-D clippy::suspicious-to-owned` implied by `-D warnings`
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// we expect no lints for this
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let cow = Cow::Borrowed(moo);
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let _ = cow.into_owned();
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// we expect no lints for this
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let cow = Cow::Borrowed(moo);
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let _ = cow.clone();
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// we expect this to be linted
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let cow = Cow::Borrowed(&moos);
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let _ = cow.to_owned();
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//~^ ERROR: this `to_owned` call clones the Cow<'_, [char; 3]> itself and does not cau
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// we expect no lints for this
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let cow = Cow::Borrowed(&moos);
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let _ = cow.into_owned();
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// we expect no lints for this
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let cow = Cow::Borrowed(&moos);
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let _ = cow.clone();
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// we expect this to be linted
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let cow = Cow::Borrowed(&moos_vec);
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let _ = cow.to_owned();
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//~^ ERROR: this `to_owned` call clones the Cow<'_, Vec<char>> itself and does not cau
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// we expect no lints for this
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let cow = Cow::Borrowed(&moos_vec);
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let _ = cow.into_owned();
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// we expect no lints for this
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let cow = Cow::Borrowed(&moos_vec);
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let _ = cow.clone();
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// we expect this to be linted
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let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy();
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let _ = cow.to_owned();
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//~^ ERROR: this `to_owned` call clones the Cow<'_, str> itself and does not cause the
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// we expect no lints for this
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let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy();
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let _ = cow.into_owned();
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// we expect no lints for this
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let cow = unsafe { CStr::from_ptr(c_moo_ptr) }.to_string_lossy();
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let _ = cow.clone();
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// we expect no lints for these
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let _ = moo.to_owned();
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let _ = c_moo.to_owned();
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let _ = moos.to_owned();
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// we expect implicit_clone lints for these
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let _ = String::from(moo).to_owned();
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//~^ ERROR: implicitly cloning a `String` by calling `to_owned` on its dereferenced ty
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//~| NOTE: `-D clippy::implicit-clone` implied by `-D warnings`
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let _ = moos_vec.to_owned();
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//~^ ERROR: implicitly cloning a `Vec` by calling `to_owned` on its dereferenced type
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}
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