silence transmute warning lints

src/header/bits_pthread/mod.rs

@@ -77,6 +77,7 @@ macro_rules! assert_equal_size(
 
             // Fail at compile-time if alignments differ.
             let a = [0_u8; core::mem::align_of::<$export>()];
+            #[allow(clippy::useless_transmute)]
             let b: [u8; core::mem::align_of::<Wrapped>()] = core::mem::transmute(a);
         };
         // TODO: Turn into a macro?

src/header/dirent/mod.rs

@@ -343,6 +343,7 @@ pub unsafe extern "C" fn scandir(
                 (*namelist).cast::<c_void>(),
                 len as size_t,
                 mem::size_of::<*mut dirent>(),
+                #[allow(clippy::missing_transmute_annotations)] // too verbose
                 mem::transmute(compare),
             )
         };

src/header/signal/mod.rs

@@ -296,6 +296,7 @@ pub unsafe extern "C" fn sighold(sig: c_int) -> c_int {
 /// Present in issue 7. Removed in issue 8.
 ///
 /// Use of this function is unspecified in a multi-threaded process.
+#[allow(clippy::missing_transmute_annotations)]
 #[unsafe(no_mangle)]
 pub extern "C" fn sigignore(sig: c_int) -> c_int {
     let mut psa = mem::MaybeUninit::<sigaction>::uninit();
@@ -342,6 +343,7 @@ pub unsafe extern "C" fn sigismember(set: *const sigset_t, signo: c_int) -> c_in
 }
 
 /// See <https://pubs.opengroup.org/onlinepubs/9799919799/functions/signal.html>.
+#[allow(clippy::missing_transmute_annotations)]
 #[unsafe(no_mangle)]
 pub extern "C" fn signal(
     sig: c_int,