USE_SIGLONGJMP
# define USE_SIGLONGJMP 1 /* sigsetjmp needed for signal handling */
# define USE_SIGLONGJMP 1 /* sigsetjmp needed for signal handling */
# define USE_SIGLONGJMP 1 /* sigsetjmp needed for signal handling */
# define USE_SIGLONGJMP 0 /* assume setjmp handles signals properly */