[Pcre-svn] [953] code/trunk: Fixed a bug for backward assert…

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Author: Subversion repository
Date:  
To: pcre-svn
Subject: [Pcre-svn] [953] code/trunk: Fixed a bug for backward assertions with REVERSE 0 in the JIT compiler
Revision: 953
          http://vcs.pcre.org/viewvc?view=rev&revision=953
Author:   zherczeg
Date:     2012-03-29 18:41:57 +0100 (Thu, 29 Mar 2012)


Log Message:
-----------
Fixed a bug for backward assertions with REVERSE 0 in the JIT compiler

Modified Paths:
--------------
    code/trunk/ChangeLog
    code/trunk/pcre_jit_compile.c
    code/trunk/testdata/testinput5
    code/trunk/testdata/testoutput5


Modified: code/trunk/ChangeLog
===================================================================
--- code/trunk/ChangeLog    2012-03-16 12:59:30 UTC (rev 952)
+++ code/trunk/ChangeLog    2012-03-29 17:41:57 UTC (rev 953)
@@ -75,7 +75,9 @@
 20. The madvise function is renamed for posix_madvise for QNX compatibility
     reasons. Fixed by Giuseppe D'Angelo.


+21. Fixed a bug for backward assertions with REVERSE 0 in the JIT compiler.

+
Version 8.30 04-February-2012
-----------------------------


Modified: code/trunk/pcre_jit_compile.c
===================================================================
--- code/trunk/pcre_jit_compile.c    2012-03-16 12:59:30 UTC (rev 952)
+++ code/trunk/pcre_jit_compile.c    2012-03-29 17:41:57 UTC (rev 953)
@@ -3746,7 +3746,8 @@


   case OP_REVERSE:
   length = GET(cc, 0);
-  SLJIT_ASSERT(length > 0);
+  if (length == 0)
+    return cc + LINK_SIZE;
   OP1(SLJIT_MOV, TMP1, 0, ARGUMENTS, 0);
 #ifdef SUPPORT_UTF
   if (common->utf)


Modified: code/trunk/testdata/testinput5
===================================================================
--- code/trunk/testdata/testinput5    2012-03-16 12:59:30 UTC (rev 952)
+++ code/trunk/testdata/testinput5    2012-03-29 17:41:57 UTC (rev 953)
@@ -795,4 +795,7 @@


/(?<=\x{1234}\x{1234})\bxy/I8

+/(?<!^)ETA/8
+    ETA
+
 /-- End of testinput5 --/


Modified: code/trunk/testdata/testoutput5
===================================================================
--- code/trunk/testdata/testoutput5    2012-03-16 12:59:30 UTC (rev 952)
+++ code/trunk/testdata/testoutput5    2012-03-29 17:41:57 UTC (rev 953)
@@ -1880,4 +1880,8 @@
 Need char = 'y'
 Max lookbehind = 2


+/(?<!^)ETA/8
+    ETA
+No match
+
 /-- End of testinput5 --/