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rust: kernel: Mark rust_fmt_argument as extern "C" #967

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rust: kernel: Mark rust_fmt_argument as extern "C" #967

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2 changes: 1 addition & 1 deletion rust/kernel/print.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ 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()) };
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