commit 8fee878fe277ec1b1b833ba6e5db679151f7982f
author Bram Moolenaar <Bram@vim.org> Tue Aug 11 18:45:48 2015 +0200
committer Bram Moolenaar <Bram@vim.org> Tue Aug 11 18:45:48 2015 +0200
tree 8312c60b6eb8d95c1627e20702206dc32f2a54e3
parent 901e58c243ef4363bb2c13b2c96c7b0acd45e6d1

patch 7.4.820
Problem:    Invalid memory access in file_pat_to_reg_pat.
Solution:   Avoid looking before the start of a string. (Dominique Pelle)

src/fileio.c

diff --git a/src/fileio.c b/src/fileio.c
index 973e8ca..0f3f148 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -10210,7 +10210,7 @@
     else
 	reg_pat[i++] = '^';
     endp = pat_end - 1;
-    if (*endp == '*')
+    if (endp >= pat && *endp == '*')
     {
 	while (endp - pat > 0 && *endp == '*')
 	    endp--;

src/version.c

diff --git a/src/version.c b/src/version.c
index e3b885e..f8ef512 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    820,
+/**/
     819,
 /**/
     818,