Merge pull request #207 from saethlin/master

Fix UB: strlen called without a null terminator

Author: jbaublitz

src/macros.rs

@@ -451,14 +451,14 @@ mod test {
     #[test]
     fn test_c_confirm_callback() {
         let ret = confirm_callback(
-            "".as_ptr() as *const std::os::raw::c_char,
+            "\0".as_ptr() as *const std::os::raw::c_char,
             &mut 1u32 as *mut _ as *mut std::os::raw::c_void,
         );
         assert_eq!(1, ret);
         assert_eq!(Bool::Yes, Bool::from(ret));
 
         let ret = confirm_callback(
-            "".as_ptr() as *const std::os::raw::c_char,
+            "\0".as_ptr() as *const std::os::raw::c_char,
             &mut 0u32 as *mut _ as *mut std::os::raw::c_void,
         );
         assert_eq!(0, ret);
@@ -469,13 +469,13 @@ mod test {
     fn test_c_logging_callback() {
         logging_callback(
             libcryptsetup_rs_sys::CRYPT_LOG_ERROR as i32,
-            "".as_ptr() as *const std::os::raw::c_char,
+            "\0".as_ptr() as *const std::os::raw::c_char,
             &mut 1u32 as *mut _ as *mut std::os::raw::c_void,
         );
 
         logging_callback(
             libcryptsetup_rs_sys::CRYPT_LOG_DEBUG as i32,
-            "".as_ptr() as *const std::os::raw::c_char,
+            "\0".as_ptr() as *const std::os::raw::c_char,
             &mut 0u32 as *mut _ as *mut std::os::raw::c_void,
         );
     }