+/**
+ * Check if all labels are defined in the current function.
+ */
+static void check_for_missing_labels(void)
+{
+ bool first_err = true;
+ for (const goto_statement_t *goto_statement = goto_first;
+ goto_statement != NULL;
+ goto_statement = goto_statement->next) {
+ const declaration_t *label = goto_statement->label;
+
+ if (label->source_position.input_name == NULL) {
+ if (first_err) {
+ first_err = false;
+ diagnosticf("%s: In function '%Y':\n",
+ current_function->source_position.input_name,
+ current_function->symbol);
+ }
+ errorf(goto_statement->statement.source_position,
+ "label '%Y' used but not defined", label->symbol);
+ }
+ }
+ goto_first = goto_last = NULL;
+}
+