PCRE2 - Perl-compatible regular expressions (revised API)
#include <pcre2.h>
pcre2_code *pcre2_code_copy(const pcre2_code *code);
This function makes a copy of the memory used for a compiled pattern, excluding
any memory used by the JIT compiler. Without a subsequent call to
pcre2_jit_compile(), the copy can be used only for non-JIT matching.
The pointer to the character tables is copied, not the tables themselves (see
pcre2_code_copy_with_tables()). The yield of the function is NULL if
code is NULL or if sufficient memory cannot be obtained.
There is a complete description of the PCRE2 native API in the
pcre2api page and a description of the POSIX API in the
pcre2posix page.