FAIL_STACK_EMPTY 1363 regex.cpp        assert (!FAIL_STACK_EMPTY ());					\
FAIL_STACK_EMPTY 3125 regex.cpp      	  if (!FAIL_STACK_EMPTY ())
FAIL_STACK_EMPTY 3283 regex.cpp                if (!FAIL_STACK_EMPTY ()
FAIL_STACK_EMPTY 3975 regex.cpp                    if (!FAIL_STACK_EMPTY ())
FAIL_STACK_EMPTY 5039 regex.cpp            if (!FAIL_STACK_EMPTY ())