...

src/types.zig

@@ -531,6 +531,9 @@ pub const Type = union(enum) {
             return Type.s(capped);
         }
 
+        // Pointer types: both are pointers → return first (all are opaque ptr at LLVM level)
+        if ((a.isPointer() or a.isManyPointer()) and (b.isPointer() or b.isManyPointer())) return a;
+
         return a;
     }
 };