Section (3) pcre2_code_free
PCRE2 — Perl-compatible regular expressions (revised API)
code is NULL, this
function does nothing. Otherwise,
code must point to a compiled pattern. This
function frees its memory, including any memory used by the
JIT compiler. If the compiled pattern was created by a call
pcre2_code_copy_with_tables(), the memory
for the character tables is also freed.
This manual page is taken from the PCRE library, which is distributed under the BSD license.