STK_MASK_POP_USED  804 regexec.c            if ((stk->type & STK_MASK_POP_USED) != 0)  break;\
STK_MASK_POP_USED  812 regexec.c            if ((stk->type & STK_MASK_POP_USED) != 0)  break;\
STK_MASK_POP_USED  824 regexec.c            if ((stk->type & STK_MASK_POP_USED) != 0)  break;\