static tree_node * regex_cache = NULL;
static tree_node * regex_caseless_cache = NULL;
+#define REGEX_CACHESIZE_LIMIT 1000
+
/******************************************************************************/
static void
{
const re_req * req = (const re_req *)reqbuf;
uschar * errstr;
-const pcre2_code * cre = regex_compile(req->re,
- req->caseless ? MCS_CASELESS | MCS_CACHEABLE : MCS_CACHEABLE,
- &errstr, pcre_gen_cmp_ctx);
+const pcre2_code * cre;
+
+if (regex_cachesize >= REGEX_CACHESIZE_LIMIT)
+ errstr = US"regex cache size limit reached";
+else if ((cre = regex_compile(req->re,
+ req->caseless ? MCS_CASELESS | MCS_CACHEABLE : MCS_CACHEABLE,
+ &errstr, pcre_gen_cmp_ctx)))
+ regex_cachesize++;
DEBUG(D_any) if (!cre) debug_printf("%s\n", errstr);
return;