Fix unnecessary cast (Clippy warning)

2 files changed, 12 insertions, 5 deletions

diff --git a/rust/libnewsboat-ffi/src/utils.rs b/rust/libnewsboat-ffi/src/utils.rs
index 3fa44ef9..4d0740b9 100644
--- a/rust/libnewsboat-ffi/src/utils.rs
+++ b/rust/libnewsboat-ffi/src/utils.rs
@@ -1,4 +1,4 @@
-use libc::c_char;
+use libc::{c_char, c_ulong};
 use libnewsboat::utils::{self, *};
 use std::ffi::{CStr, CString};
 use std::path::{Path, PathBuf};
@@ -103,7 +103,16 @@ mod bridged {
 }
 
 fn get_auth_method(method: &str) -> u64 {
-    utils::get_auth_method(method) as u64
+    let result: c_ulong = utils::get_auth_method(method);
+    #[cfg(target_pointer_width = "32")]
+    {
+        // On 32-bit platforms, upcast
+        result as u64
+    }
+    #[cfg(target_pointer_width = "64")]
+    {
+        result
+    }
 }
 
 fn run_interactively(command: &str, caller: &str, exit_code: &mut u8) -> bool {
diff --git a/rust/regex-rs/src/lib.rs b/rust/regex-rs/src/lib.rs
index f6e30edd..50ca9cfe 100644
--- a/rust/regex-rs/src/lib.rs
+++ b/rust/regex-rs/src/lib.rs
@@ -117,9 +117,7 @@ unsafe fn regex_error_to_str(errcode: libc::c_int, regex: &regex_t) -> Option<St
     let errmsg_length = regerror(errcode, regex, ptr::null_mut(), 0);
 
     // Allocate the buffer and get the message.
-    // Casting u64 to usize is safe since the error message is unlikely to hit usize's
-    // upper bound.
-    let mut errmsg: Vec<u8> = vec![0; errmsg_length as usize];
+    let mut errmsg: Vec<u8> = vec![0; errmsg_length];
     // Casting `*mut u8` to `*mut c_char` should be safe since C doesn't really care:
     // it can store any ASCII symbol in a `char`, disregarding signedness.
     regerror(