Description:
------------
These three function has a flaw that can eventually result in crash:

ZEND_API double zend_bin_strtod(const char *str, const char **endptr)
{
...
	if (strlen(str) < 2) {
		*endptr = str; <--- No check if endptr is NULL, can result in zero pointer dereferencing
		return 0.0;
	}

...

	if (NULL != endptr) {  <--- But here this check is present
		*endptr = (char *)(any ? s - 1 : str);
	}

	return value;
}