PEND below). The <i>preg</i> argument is a pointer to a
<b>regex_t</b> structure that is used as a base for storing information about
the compiled regular expression. It is also used for input when REG_PEND is
set. The <b>regex_t</b> structure used by <b>pcre2_regcomp()</b> is defined in
<b>pcre2posix.h</b> and is not the same as the structure used by other libraries
that provide POSIX-style matching.
</p>
<p>
The argument <i>cflags</i> is either zero, or contains one or more of the bits
defined by the foll