ACKSLASH_C option can be used by an
application to lock out the use of \C, causing a compile-time error if it is
encountered. It is also possible to build PCRE2 with the use of \C permanently
disabled.
</P>
<P>
Another way that performance can be hit is by running a pattern that has a very
large search tree against a string that will never match. Nested unlimited
repeats in a pattern are a common example. PCRE2 provides some protection
against this: see the <b>pcre2_set_match_limit()</b> function in the
<a 