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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/tools/clippy/tests/ui/print_in_format_impl.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/tools/clippy/tests/ui/print_in_format_impl.rs | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/print_in_format_impl.rs b/src/tools/clippy/tests/ui/print_in_format_impl.rs new file mode 100644 index 000000000..64e886866 --- /dev/null +++ b/src/tools/clippy/tests/ui/print_in_format_impl.rs @@ -0,0 +1,58 @@ +#![allow(unused, clippy::print_literal, clippy::write_literal)] +#![warn(clippy::print_in_format_impl)] +use std::fmt::{Debug, Display, Error, Formatter}; + +macro_rules! indirect { + () => {{ println!() }}; +} + +macro_rules! nested { + ($($tt:tt)*) => { + $($tt)* + }; +} + +struct Foo; +impl Debug for Foo { + fn fmt(&self, f: &mut Formatter) -> Result<(), Error> { + static WORKS_WITH_NESTED_ITEMS: bool = true; + + print!("{}", 1); + println!("{}", 2); + eprint!("{}", 3); + eprintln!("{}", 4); + nested! { + println!("nested"); + }; + + write!(f, "{}", 5); + writeln!(f, "{}", 6); + indirect!(); + + Ok(()) + } +} + +impl Display for Foo { + fn fmt(&self, f: &mut Formatter) -> Result<(), Error> { + print!("Display"); + write!(f, "Display"); + + Ok(()) + } +} + +struct UnnamedFormatter; +impl Debug for UnnamedFormatter { + fn fmt(&self, _: &mut Formatter) -> Result<(), Error> { + println!("UnnamedFormatter"); + Ok(()) + } +} + +fn main() { + print!("outside fmt"); + println!("outside fmt"); + eprint!("outside fmt"); + eprintln!("outside fmt"); +} |