STACK_START      1093 gc.c           # define STACK_LENGTH  (STACK_START - STACK_END)
STACK_START      1095 gc.c           # define STACK_LENGTH  (STACK_END - STACK_START + 1)
STACK_START      1097 gc.c           # define STACK_LENGTH  ((STACK_END < STACK_START) ? STACK_START - STACK_END\
STACK_START      1098 gc.c                                                      : STACK_END - STACK_START + 1)
STACK_START      1120 gc.c               if (p) *p = STACK_UPPER(STACK_END, STACK_START, STACK_END);
STACK_START      1985 gc.c           			 (STACK_START - STACK_END));