#if 1
#if
/*
 * check-name: Preprocessor #21
 * check-description: This used to hang Sparse.
 * check-command: sparse -E $file
 *
 * check-output-start


 * check-output-end
 *
 * check-error-start
preprocessor/preprocessor21.c:2:2: error: unterminated preprocessor conditional
 * check-error-end
 */