pkgs/tools/text/gnupatch/CVE-2018-6952.patch

   1 From 9c986353e420ead6e706262bf204d6e03322c300 Mon Sep 17 00:00:00 2001
   2 From: Andreas Gruenbacher <agruen@gnu.org>
   3 Date: Fri, 17 Aug 2018 13:35:40 +0200
   4 Subject: Fix swapping fake lines in pch_swap
   5
   6 * src/pch.c (pch_swap): Fix swapping p_bfake and p_efake when there is a
   7 blank line in the middle of a context-diff hunk: that empty line stays
   8 in the middle of the hunk and isn't swapped.
   9
  10 Fixes: https://savannah.gnu.org/bugs/index.php?53133
  11 ---
  12  src/pch.c | 2 +-
  13  1 file changed, 1 insertion(+), 1 deletion(-)
  14
  15 diff --git a/src/pch.c b/src/pch.c
  16 index e92bc64..a500ad9 100644
  17 --- a/src/pch.c
  18 +++ b/src/pch.c
  19 @@ -2122,7 +2122,7 @@ pch_swap (void)
  20      }
  21      if (p_efake >= 0) {                        /* fix non-freeable ptr range */
  22         if (p_efake <= i)
  23 -           n = p_end - i + 1;
  24 +           n = p_end - p_ptrn_lines;
  25         else
  26             n = -i;
  27         p_efake += n;
  28 --