(backup) correct malformed error reporting
@@ -656,7 +656,7 @@ yyreport_syntax_error (const yypcontext_t *ctx)
output += String::ToString("%5s | %*s", "", loc->first_column, "^");
}
- yyerror(output.c_str());
+ yyerror("%s", output.c_str());
return ret;