Hans Leidekker : msi: Avoid an out of bounds access in msi_build_directory_name.
Alexandre Julliard
julliard at winehq.org
Mon Aug 13 13:21:16 CDT 2012
Module: wine
Branch: master
Commit: b7cefc999701a5c2ff8ffc5c5f3da77ff82a874d
URL: http://source.winehq.org/git/wine.git/?a=commit;h=b7cefc999701a5c2ff8ffc5c5f3da77ff82a874d
Author: Hans Leidekker <hans at codeweavers.com>
Date: Wed Aug 1 11:54:18 2012 +0200
msi: Avoid an out of bounds access in msi_build_directory_name.
---
dlls/msi/action.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/dlls/msi/action.c b/dlls/msi/action.c
index 1ad3bc2..e1d2f2a 100644
--- a/dlls/msi/action.c
+++ b/dlls/msi/action.c
@@ -2154,7 +2154,7 @@ WCHAR *msi_build_directory_name( DWORD count, ... )
const WCHAR *str = va_arg( va, const WCHAR * );
if (!str) continue;
strcatW( dir, str );
- if ( i + 1 != count && dir[strlenW( dir ) - 1] != '\\') strcatW( dir, szBackSlash );
+ if ( i + 1 != count && dir[0] && dir[strlenW( dir ) - 1] != '\\') strcatW( dir, szBackSlash );
}
va_end( va );
return dir;
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