[pcre-dev] [Bug 2300] character class using \x escape sequen…

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日付:  
To: pcre-dev
題目: [pcre-dev] [Bug 2300] character class using \x escape sequence, /i modifier, and backtracking
https://bugs.exim.org/show_bug.cgi?id=2300

Philip Hazel <ph10@???> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED


--- Comment #5 from Philip Hazel <ph10@???> ---
It turns out to be a one-line patch (Zoltan, this was your code, is this the
right patch?). I have committed this patch to both PCRE1 and PCRE2.

Index: pcre_compile.c
===================================================================
--- pcre_compile.c      (revision 1737)
+++ pcre_compile.c      (working copy)
@@ -3299,7 +3299,7 @@
       if ((*xclass_flags & XCL_MAP) == 0)
         {
         /* No bits are set for characters < 256. */
-        if (list[1] == 0) return TRUE;
+        if (list[1] == 0) return (*xclass_flags & XCL_NOT) == 0;
         /* Might be an empty repeat. */
         continue;
         }


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