[Pcre-svn] [1474] code/trunk: Add missing match limit test t…

Revision: 1474

          http://vcs.pcre.org/viewvc?view=rev&revision=1474
Author:   zherczeg
Date:     2014-04-24 07:43:50 +0100 (Thu, 24 Apr 2014)

Log Message:
-----------
Add missing match limit test to JIT.

Modified Paths:
--------------
    code/trunk/ChangeLog
    code/trunk/pcre_jit_compile.c

Modified: code/trunk/ChangeLog
===================================================================
--- code/trunk/ChangeLog    2014-04-21 17:52:38 UTC (rev 1473)
+++ code/trunk/ChangeLog    2014-04-24 06:43:50 UTC (rev 1474)
@@ -15,7 +15,12 @@
 3.  Tidy code in pcre_exec.c where two branches that used to be different are
     now the same. 

+4.  The JIT compiler did not generate match limit checks for certain
+    bracketed expressions with quantifiers. This may lead to exponential
+    backtracking, instead of returning with PCRE_ERROR_MATCHLIMIT. This
+    issue should be resolved now.

+
Version 8.35 04-April-2014
--------------------------

Modified: code/trunk/pcre_jit_compile.c
===================================================================
--- code/trunk/pcre_jit_compile.c    2014-04-21 17:52:38 UTC (rev 1473)
+++ code/trunk/pcre_jit_compile.c    2014-04-24 06:43:50 UTC (rev 1474)
@@ -7416,6 +7416,7 @@

if (repeat_type == OP_EXACT)
{
+ count_match(common);
OP2(SLJIT_SUB | SLJIT_SET_E, SLJIT_MEM1(SLJIT_LOCALS_REG), repeat_ptr, SLJIT_MEM1(SLJIT_LOCALS_REG), repeat_ptr, SLJIT_IMM, 1);
JUMPTO(SLJIT_C_NOT_ZERO, rmax_label);
}