[hbelusca] 59529: [REGEDIT] Fix the creation of empty REG_MULTI_SZ values (they have to contain only one NULL char, since a multi-string has the form: str1\0str2\0...strN\0\0 where each strI\0 is a...

Author: hbelusca
Date: Sat Jul 20 00:37:47 2013
New Revision: 59529

URL: http://svn.reactos.org/svn/reactos?rev=59529&view=rev
Log:
[REGEDIT]
Fix the creation of empty REG_MULTI_SZ values (they have to contain only one NULL char,
since a multi-string has the form:
str1\0str2\0...strN\0\0
where each strI\0 is a null-terminated string, and a multi-string is terminated by a null
string.
And therefore an empty multi-string has only one null char, corresponding to the
terminating null string.

Modified:
    trunk/reactos/base/applications/regedit/framewnd.c
    trunk/reactos/base/applications/regedit/listview.c

Modified: trunk/reactos/base/applications/regedit/framewnd.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/regedit/…
==============================================================================
--- trunk/reactos/base/applications/regedit/framewnd.c	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/regedit/framewnd.c	[iso-8859-1] Sat Jul 20 00:37:47
2013
@@ -853,10 +853,19 @@
             cbData = sizeof(WCHAR);
             break;
         case REG_MULTI_SZ:
-            cbData = sizeof(WCHAR) * 2;
-            break;
-        case REG_QWORD:
-            cbData = sizeof(DWORD) * 2;
+            /*
+             * WARNING: An empty multi-string has only one null char.
+             * Indeed, multi-strings are built in the following form:
+             * str1\0str2\0...strN\0\0
+             * where each strI\0 is a null-terminated string, and it
+             * ends with a terminating empty string.
+             * Therefore an empty multi-string contains only the terminating
+             * empty string, that is, one null char.
+             */
+            cbData = sizeof(WCHAR);
+            break;
+        case REG_QWORD: /* REG_QWORD_LITTLE_ENDIAN */
+            cbData = sizeof(DWORDLONG); // == sizeof(DWORD) * 2;
             break;
         default:
             cbData = 0;

Modified: trunk/reactos/base/applications/regedit/listview.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/base/applications/regedit/…
==============================================================================
--- trunk/reactos/base/applications/regedit/listview.c	[iso-8859-1] (original)
+++ trunk/reactos/base/applications/regedit/listview.c	[iso-8859-1] Sat Jul 20 00:37:47
2013
@@ -439,7 +439,7 @@
                     return ((int)dw2 - (int)dw1);
             }
 
-            case REG_QWORD:
+            case REG_QWORD: /* REG_QWORD_LITTLE_ENDIAN */
             {
                 qw1 = *(DWORDLONG*)l->val;
                 qw2 = *(DWORDLONG*)r->val;