Nikolay Sivov : gdi32: Check header pointer in CreateDIBitmap.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 0f9bc1d3b7d3529a8162eb8ef5537d314d691121
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=0f9bc1d3b7d3529a8162eb8ef5...

Author: Nikolay Sivov 
Date:   Sun May  3 12:42:00 2009 +0400

gdi32: Check header pointer in CreateDIBitmap.

---

dlls/gdi32/dib.c          |    2 ++
 dlls/gdi32/tests/bitmap.c |    7 ++++++-
 2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/dlls/gdi32/dib.c b/dlls/gdi32/dib.c
index 0dceaa8..086eaae 100644
--- a/dlls/gdi32/dib.c
+++ b/dlls/gdi32/dib.c
@@ -1097,6 +1097,8 @@ HBITMAP WINAPI CreateDIBitmap( HDC hdc, const BITMAPINFOHEADER *header,
     DWORD compr, size;
     DC *dc;

+    if (!header) return 0;
+
     if (DIB_GetBitmapInfo( header, &width, &height, &planes, &bpp, &compr, &size ) == -1) return 0;

if (width < 0)
diff --git a/dlls/gdi32/tests/bitmap.c b/dlls/gdi32/tests/bitmap.c
index bfbeee0..a0d4531 100644
--- a/dlls/gdi32/tests/bitmap.c
+++ b/dlls/gdi32/tests/bitmap.c
@@ -144,7 +144,12 @@ static void test_createdibitmap(void)
     bmih.biPlanes = 1;
     bmih.biBitCount = 32;
     bmih.biCompression = BI_RGB;
- 
+
+    hbm = CreateDIBitmap(hdc, NULL, CBM_INIT, NULL, NULL, 0);
+    ok(hbm == NULL, "CreateDIBitmap should fail\n");
+    hbm = CreateDIBitmap(hdc, NULL, 0, NULL, NULL, 0);
+    ok(hbm == NULL, "CreateDIBitmap should fail\n");
+
     /* First create an un-initialised bitmap.  The depth of the bitmap
        should match that of the hdc and not that supplied in bmih.
     */