Declaring variables of type works

core_codegen_c_language.cpp

@@ -114,6 +114,7 @@ string_simple_decl_prefix(Ast_Type *ast) {
             String string = pctx->fmt("Tuple%llu ", ast->type_id);
             return string;
         } break;
+        case TYPE_UNION:
         case TYPE_STRUCT: {
             auto constant = (Ast_Decl *)ast->ast;
             auto name = constant->unique_name;

examples/push_struct.core

@@ -21,4 +21,6 @@ main :: (argc: int, argv: **char): int
 	a: *int = PushStruct(&arena, int)
 	Assert(arena.len == SizeOf(int))
 
+	memes: U
+
 	return 0