131 struct stack_block {  struct
132 	struct stack_block *prev;  argument
135 #define SPACE(sp)	((char*)(sp) + ALIGN(sizeof(struct stack_block)))
137 static struct stack_block *stackp;
146 	struct stack_block *sp;  in stnewblock()
152 	allocsize = ALIGN(sizeof(struct stack_block)) + ALIGN(nbytes);  in stnewblock()
220 	struct stack_block *sp;  in popstackmark()
252 	struct stack_block *sp;  in growstackblock()
253 	struct stack_block *oldstackp;  in growstackblock()
258 	    INT_MAX / 2 - ALIGN(sizeof(struct stack_block)))  in growstackblock()
261 	min += ALIGN(sizeof(struct stack_block));  in growstackblock()
280 		newlen -= ALIGN(sizeof(struct stack_block));  in growstackblock()