POP_FAILURE_ITEM
#define DEBUG_POP(item_addr) *(item_addr) = POP_FAILURE_ITEM ()
string_temp = POP_FAILURE_ITEM (); \
pat = (unsigned char *) POP_FAILURE_ITEM (); \
high_reg = (unsigned) POP_FAILURE_ITEM (); \
low_reg = (unsigned) POP_FAILURE_ITEM (); \
reg_info[this_reg].word = POP_FAILURE_ITEM (); \
regend[this_reg] = (const char *) POP_FAILURE_ITEM (); \
regstart[this_reg] = (const char *) POP_FAILURE_ITEM (); \