124 struct stack_block {  struct
125 	struct stack_block *prev;  argument
128 #define SPACE(sp)	((char*)(sp) + ALIGN(sizeof(struct stack_block)))
130 static struct stack_block *stackp;
139 	struct stack_block *sp;  in stnewblock()
145 	allocsize = ALIGN(sizeof(struct stack_block)) + ALIGN(nbytes);  in stnewblock()
213 	struct stack_block *sp;  in popstackmark()
245 	struct stack_block *sp;  in growstackblock()
246 	struct stack_block *oldstackp;  in growstackblock()
251 	    INT_MAX / 2 - ALIGN(sizeof(struct stack_block)))  in growstackblock()
254 	min += ALIGN(sizeof(struct stack_block));  in growstackblock()
273 		newlen -= ALIGN(sizeof(struct stack_block));  in growstackblock()