SIZE_OP_FAIL_LOOK_BEHIND_NOT 1375 ext/mbstring/oniguruma/regcomp.c len = SIZE_OP_PUSH_LOOK_BEHIND_NOT + tlen + SIZE_OP_FAIL_LOOK_BEHIND_NOT; SIZE_OP_FAIL_LOOK_BEHIND_NOT 1446 ext/mbstring/oniguruma/regcomp.c len + SIZE_OP_FAIL_LOOK_BEHIND_NOT);