stack_num         387 ext/mbstring/oniguruma/regexec.c #define STACK_INIT(alloc_addr, ptr_num, stack_num)  do {\
stack_num         397 ext/mbstring/oniguruma/regexec.c 		       + sizeof(OnigStackType) * (stack_num));\
stack_num         401 ext/mbstring/oniguruma/regexec.c     stk_end    = stk_base + (stack_num);\