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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/test/ui/lint/dead-code/lint-dead-code-4.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 'src/test/ui/lint/dead-code/lint-dead-code-4.rs')
-rw-r--r-- | src/test/ui/lint/dead-code/lint-dead-code-4.rs | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/test/ui/lint/dead-code/lint-dead-code-4.rs b/src/test/ui/lint/dead-code/lint-dead-code-4.rs new file mode 100644 index 000000000..0fc6c6156 --- /dev/null +++ b/src/test/ui/lint/dead-code/lint-dead-code-4.rs @@ -0,0 +1,83 @@ +#![allow(unused_variables)] +#![allow(non_camel_case_types)] +#![deny(dead_code)] + +struct Foo { + x: usize, + b: bool, //~ ERROR: field `b` is never read +} + +fn field_read(f: Foo) -> usize { + f.x.pow(2) +} + +enum XYZ { + X, //~ ERROR variants `X` and `Y` are never constructed + Y { + a: String, + b: i32, + c: i32, + }, + Z +} + +enum ABC { //~ ERROR enum `ABC` is never used + A, + B { + a: String, + b: i32, + c: i32, + }, + C +} + +// ensure struct variants get warning for their fields +enum IJK { + I, //~ ERROR variants `I` and `K` are never constructed + J { + a: String, + b: i32, //~ ERROR fields `b` and `c` are never read + c: i32, + }, + K + +} + +fn struct_variant_partial_use(b: IJK) -> String { + match b { + IJK::J { a, b: _, .. } => a, + _ => "".to_string() + } +} + +fn field_match_in_patterns(b: XYZ) -> String { + match b { + XYZ::Y { a, b: _, .. } => a, + _ => "".to_string() + } +} + +struct Bar { + x: usize, //~ ERROR: fields `x` and `c` are never read + b: bool, + c: bool, + _guard: () +} + +#[repr(C)] +struct Baz { + x: u32, +} + +fn field_match_in_let(f: Bar) -> bool { + let Bar { b, c: _, .. } = f; + b +} + +fn main() { + field_read(Foo { x: 1, b: false }); + field_match_in_patterns(XYZ::Z); + struct_variant_partial_use(IJK::J { a: "".into(), b: 1, c: -1 }); + field_match_in_let(Bar { x: 42, b: true, c: false, _guard: () }); + let _ = Baz { x: 0 }; +} |