This function requests JIT compilation, which, if the just-in-time compiler is
available, further processes a compiled pattern into machine code that executes
much faster than the pcre2_match() interpretive matching function. Full
details are given in the
The first argument is a pointer that was returned by a successful call to
pcre2_compile(), and the second must contain one or more of the following
PCRE2_JIT_COMPLETE compile code for full matching
PCRE2_JIT_PARTIAL_SOFT compile code for soft partial matching
PCRE2_JIT_PARTIAL_HARD compile code for hard partial matching
The yield of the function is 0 for success, or a negative error code otherwise.
In particular, PCRE2_ERROR_JIT_BADOPTION is returned if JIT is not supported or
if an unknown bit is set in options.
There is a complete description of the PCRE2 native API in the
page and a description of the POSIX API in the