diff --git a/rust/kernel/print.rs b/rust/kernel/print.rs index 29bf9c2e8aee61..8beba336b7d15b 100644 --- a/rust/kernel/print.rs +++ b/rust/kernel/print.rs @@ -18,7 +18,11 @@ use crate::bindings; // Called from `vsprintf` with format specifier `%pA`. #[no_mangle] -unsafe fn rust_fmt_argument(buf: *mut c_char, end: *mut c_char, ptr: *const c_void) -> *mut c_char { +unsafe extern "C" fn rust_fmt_argument( + buf: *mut c_char, + end: *mut c_char, + ptr: *const c_void, +) -> *mut c_char { use fmt::Write; // SAFETY: The C contract guarantees that `buf` is valid if it's less than `end`. let mut w = unsafe { RawFormatter::from_ptrs(buf.cast(), end.cast()) };