Differences between linux and macos pointers.

Author: alistairjevans

ext/hyper_ruby/src/request.rs

@@ -1,3 +1,5 @@
+use std::os::raw::c_char;
+
 use magnus::{value::{qnil, ReprValue}, RString, Value};
 
 use bytes::Bytes;
@@ -53,7 +55,7 @@ impl Request {
             let inner: VALUE = std::ptr::read(&rb_value as *const _ as *const VALUE);
             rb_str_resize(inner, 0);
             if body_len > 0 {
-                rb_str_cat(inner, body.as_ptr(), body.len().try_into().unwrap());
+                rb_str_cat(inner, body.as_ptr() as *const c_char, body.len().try_into().unwrap());
             }
         }