Fix ptr_mask impl in cg gcc

src/intrinsic/mod.rs

@@ -320,7 +320,17 @@ fn codegen_intrinsic_call(&mut self, instance: Instance<'tcx>, fn_abi: &FnAbi<'t
                     return;
                 }
 
-                sym::ptr_mask => self.and(args[0].immediate(), args[1].immediate()),
+                sym::ptr_mask => {
+                    let usize_type = self.context.new_type::<usize>();
+                    let void_ptr_type = self.context.new_type::<*const ()>();
+
+                    let ptr = args[0].immediate();
+                    let mask = args[1].immediate();
+
+                    let addr = self.bitcast(ptr, usize_type);
+                    let masked = self.and(addr, mask);
+                    self.bitcast(masked, void_ptr_type)
+                },
                 
                 _ if name_str.starts_with("simd_") => {
                     match generic_simd_intrinsic(self, name, callee_ty, args, ret_ty, llret_ty, span) {