bool result = 0; /* return value of S_regmatch */
int depth = 0; /* depth of backtrack stack */
- int nochange_depth = 0; /* depth of GOSUB recursion with nochange*/
+ U32 nochange_depth = 0; /* depth of GOSUB recursion with nochange */
+ const U32 max_nochange_depth =
+ (3 * rex->nparens > MAX_RECURSE_EVAL_NOCHANGE_DEPTH) ?
+ 3 * rex->nparens : MAX_RECURSE_EVAL_NOCHANGE_DEPTH;
+
regmatch_state *yes_state = NULL; /* state to pop to on success of
subpattern */
/* mark_state piggy backs on the yes_state logic so that when we unwind
GET_RE_DEBUG_FLAGS_DECL;
#endif
- DEBUG_OPTIMISE_r( {
+ DEBUG_OPTIMISE_r( DEBUG_EXECUTE_r({
PerlIO_printf(Perl_debug_log,"regmatch start\n");
- });
+ }));
/* on first ever call to regmatch, allocate first slab */
if (!PL_regmatch_slab) {
Newx(PL_regmatch_slab, 1, regmatch_slab);
if (cur_eval && cur_eval->locinput==locinput) {
if (cur_eval->u.eval.close_paren == (U32)ARG(scan))
Perl_croak(aTHX_ "Infinite recursion in regex");
- if ( ++nochange_depth > MAX_RECURSE_EVAL_NOCHANGE_DEPTH )
+ if ( ++nochange_depth > max_nochange_depth )
Perl_croak(aTHX_
"Pattern subroutine nesting without pos change"
" exceeded limit in regex");
/* NOTREACHED */
case EVAL: /* /(?{A})B/ /(??{A})B/ and /(?(?{A})X|Y)B/ */
if (cur_eval && cur_eval->locinput==locinput) {
- if ( ++nochange_depth > MAX_RECURSE_EVAL_NOCHANGE_DEPTH )
+ if ( ++nochange_depth > max_nochange_depth )
Perl_croak(aTHX_ "EVAL without pos change exceeded limit in regex");
} else {
nochange_depth = 0;
cur_curlyx = ST.prev_curlyx;
/* XXXX This is too dramatic a measure... */
PL_reg_maxiter = 0;
+ if ( nochange_depth > 0 );
+ nochange_depth--;
sayYES;
cur_curlyx = ST.prev_curlyx;
/* XXXX This is too dramatic a measure... */
PL_reg_maxiter = 0;
+ if ( nochange_depth > 0 );
+ nochange_depth--;
sayNO_SILENT;
#undef ST
DEBUG_EXECUTE_r(
PerlIO_printf(Perl_debug_log, "%*s EVAL trying tail ... %"UVxf"\n",
REPORT_CODE_OFF+depth*2, "",PTR2UV(cur_eval)););
+ if ( nochange_depth > 0 );
+ nochange_depth++;
PUSH_YES_STATE_GOTO(EVAL_AB,
st->u.eval.prev_eval->u.eval.B); /* match B */
}
register char *loceol = PL_regeol;
register I32 hardcount = 0;
register bool do_utf8 = PL_reg_match_utf8;
+#ifndef DEBUGGING
+ PERL_UNUSED_ARG(depth);
+#endif
scan = PL_reginput;
if (max == REG_INFTY)