;
  rc = pcre_exec(re, extra, subject, length, 0, 0, ovector, 30);
  /* Check results */
  pcre_free(re);
  pcre_free_study(extra);
  pcre_jit_stack_free(jit_stack);

</PRE>
</P>
<br><a name="SEC11" href="#TOC1">JIT FAST PATH API</a><br>
<P>
Because the API described above falls back to interpreted execution when JIT is
not available, it is convenient for programs that are written for general use
in many environments. However, calling JIT via <b>pcre_exec()</b> does have a
performance impact. Programs that 