Merge pull request #2692 from artichoke/lopopolo/gh-2691-unsafe-preco…

…ndition-rest-args Do not create a slice of rest args when none are given
artichoke · Feb 11, 2024 · f84bd07 · f84bd07
2 parents 287b1fb + 8dd08e3
commit f84bd07
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/artichoke-backend/src/macros.rs b/artichoke-backend/src/macros.rs
@@ -422,6 +422,12 @@ macro_rules! mrb_get_args {
             args.as_mut_ptr(),
             count.as_mut_ptr(),
         );
-        std::slice::from_raw_parts(args.assume_init(), count.assume_init())
+        let args = args.assume_init();
+        let count = count.assume_init();
+        if args.is_null() || count == 0 {
+            &[]
+        } else {
+            std::slice::from_raw_parts(args, count)
+        }
     }};
 }