STACK_UPPER      1120 gc.c               if (p) *p = STACK_UPPER(STACK_END, STACK_START, STACK_END);
STACK_UPPER       185 thread_pthread.c #define STACK_DIR_UPPER(a,b) STACK_UPPER(0, a, b)
STACK_UPPER       188 thread_pthread.c #define STACK_DIR_UPPER(a,b) STACK_UPPER(&stack_grow_dir_detection, a, b)
STACK_UPPER       278 thread_pthread.c         STACK_UPPER(&addr,