Gary Guo b6b9e6d4ab rust: pin-init: use irrefutable pattern for stack_pin_init ...

In Rust 1.100.0, `Infallible` will become an alias of `!`. The let
binding in `stack_pin_init` will thus become unreachable and produce
an "unreachable expression" warning for the subsequent match, and thus
will fail a `-Dwarnings` build. For this macro, all we need to know is
that the error type is uninhabited, so replace this with an irrefutable
pattern instead.

[ The error looks like (dummy reproducer):

      error: unreachable expression
         --> rust/kernel/sync.rs:177:5
          |
      177 |     pin_init::stack_pin_init!(let num = 42u32);
          |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          |     |
          |     unreachable expression
          |     any code following this expression is unreachable
          |
          = note: `-D unreachable-code` implied by `-D warnings`
          = help: to override `-D warnings` add `#[allow(unreachable_code)]`
          = note: this error originates in the macro `pin_init::stack_pin_init` (in Nightly builds, run with -Z macro-backtrace for more info)

    - Miguel ]

Reported-by: Mohamad Alsadhan <[email protected]>
Closes: https://github.com/Rust-for-Linux/pin-init/pull/171
Signed-off-by: Gary Guo <[email protected]>
Cc: [email protected] # Needed in 7.1.y and later (for 6.12.y and 6.18.y a custom one is needed).
Link: https://patch.msgid.link/[email protected]
[ Reworded for typos. - Miguel ]
Signed-off-by: Miguel Ojeda <[email protected]>

2026-09-01 01:27:55 +02:00

..

__internal.rs

rust: pin-init: add #[inline] to small functions

2026-08-05 11:36:18 +01:00

alloc.rs

rust: pin-init: add #[inline] to small functions

2026-08-05 11:36:18 +01:00

lib.rs

rust: pin-init: use irrefutable pattern for stack_pin_init

2026-09-01 01:27:55 +02:00