Commit 3566362d authored by Deepak Thukral's avatar Deepak Thukral Committed by Miguel Ojeda
Browse files

rust: std_vendor: update dbg macro from Rust upstream 



`dbg!` contains adapted code from Rust upstream. Compare the kernel
code with the Rust upstream one and update missing column numbers in
`dbg!` outputs.

Column numbers are not copied but adjusted for the kernel's examples.

Suggested-by: default avatarMiguel Ojeda <ojeda@kernel.org>
Link: https://github.com/Rust-for-Linux/linux/issues/1124


Signed-off-by: default avatarDeepak Thukral <iapain@gmail.com>
Link: https://lore.kernel.org/r/20241004125616.49886-1-iapain@gmail.com


[ Fixed typo and slightly reworded. - Miguel ]
Signed-off-by: default avatarMiguel Ojeda <ojeda@kernel.org>
parent 5ed14747

rust/kernel/std_vendor.rs

+11 −11
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ 
/// let a = 2;

/// # #[expect(clippy::disallowed_macros)]

/// let b = dbg!(a * 2) + 1;

/// //      ^-- prints: [src/main.rs:2] a * 2 = 4

/// //      ^-- prints: [src/main.rs:3:9] a * 2 = 4

/// assert_eq!(b, 5);

/// ```

///
@@ -67,7 +67,7 @@ 
/// This prints to the kernel log:

///

/// ```text,ignore

/// [src/main.rs:4] n.checked_sub(4) = None

/// [src/main.rs:3:8] n.checked_sub(4) = None

/// ```

///

/// Naive factorial implementation:
@@ -88,15 +88,15 @@ 
/// This prints to the kernel log:

///

/// ```text,ignore

/// [src/main.rs:3] n <= 1 = false

/// [src/main.rs:3] n <= 1 = false

/// [src/main.rs:3] n <= 1 = false

/// [src/main.rs:3] n <= 1 = true

/// [src/main.rs:4] 1 = 1

/// [src/main.rs:5] n * factorial(n - 1) = 2

/// [src/main.rs:5] n * factorial(n - 1) = 6

/// [src/main.rs:5] n * factorial(n - 1) = 24

/// [src/main.rs:11] factorial(4) = 24

/// [src/main.rs:3:8] n <= 1 = false

/// [src/main.rs:3:8] n <= 1 = false

/// [src/main.rs:3:8] n <= 1 = false

/// [src/main.rs:3:8] n <= 1 = true

/// [src/main.rs:4:9] 1 = 1

/// [src/main.rs:5:9] n * factorial(n - 1) = 2

/// [src/main.rs:5:9] n * factorial(n - 1) = 6

/// [src/main.rs:5:9] n * factorial(n - 1) = 24

/// [src/main.rs:11:1] factorial(4) = 24

/// ```

///

/// The `dbg!(..)` macro moves the input: