From 75d8081dc6c6dda04f583c01c301e3c7b8087904 Mon Sep 17 00:00:00 2001
From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Date: Wed, 20 Mar 2019 21:53:19 +0000
Subject: [PATCH] regedit: Grow the buffer when modifying a DWORD value.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=19098
Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 programs/regedit/edit.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/programs/regedit/edit.c b/programs/regedit/edit.c
index a3cf17b993a..5f2cc52759e 100644
--- a/programs/regedit/edit.c
+++ b/programs/regedit/edit.c
@@ -283,7 +283,9 @@ BOOL ModifyValue(HWND hwnd, HKEY hKeyRoot, LPCWSTR keyPath, LPCWSTR valueName)
         }
     } else if ( type == REG_DWORD ) {
         static const WCHAR x[] = {'%','x',0};
-        wsprintfW(stringValueData, x, *((DWORD*)stringValueData));
+        DWORD value = *((DWORD*)stringValueData);
+        stringValueData = heap_xrealloc(stringValueData, 64);
+        wsprintfW(stringValueData, x, value);
 	if (DialogBoxW(0, MAKEINTRESOURCEW(IDD_EDIT_DWORD), hwnd, modify_dlgproc) == IDOK) {
 	    DWORD val;
 	    CHAR* valueA = GetMultiByteString(stringValueData);