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fix(core/abi): cast identity PEM pointers with .cast(), not as *mut u8

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`c_char` is i8 on x86_64 and u8 on aarch64, so `cert_pem_out as *mut u8`
is a REQUIRED conversion on one target and a no-op on the other — where
clippy::unnecessary_cast then denies it. `.cast::<u8>()` is correct and
lint-clean on both.

Caught by the new aarch64 clippy leg on its first run. A sweep of the
remaining `as *mut u8` / `as *const u8` sites in the client crates found no
other c_char-derived casts; the rest convert from c_void or u16.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
enricobuehler
2026-07-25 14:32:45 +02:00
co-authored by Claude Opus 5
parent 000f8b85b0
commit ab3884c763
1 changed files with 4 additions and 2 deletions
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crates/punktfunk-core/src/abi.rs
+4 -2
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@@ -1813,9 +1813,11 @@ pub unsafe extern "C" fn punktfunk_generate_identity(
return PunktfunkStatus::InvalidArg;
}
unsafe {
std::ptr::copy_nonoverlapping(cert.as_ptr(), cert_pem_out as *mut u8, cert.len());
// `.cast()`, not `as *mut u8`: `c_char` is i8 on x86_64 but u8 on aarch64, so the
// `as` form is a REQUIRED conversion on one and a no-op clippy rejects on the other.
std::ptr::copy_nonoverlapping(cert.as_ptr(), cert_pem_out.cast::<u8>(), cert.len());
*cert_pem_out.add(cert.len()) = 0;
std::ptr::copy_nonoverlapping(key.as_ptr(), key_pem_out as *mut u8, key.len());
std::ptr::copy_nonoverlapping(key.as_ptr(), key_pem_out.cast::<u8>(), key.len());
*key_pem_out.add(key.len()) = 0;
}
PunktfunkStatus::Ok