diff options
Diffstat (limited to 'xorg-server/dix/gc.c')
| -rw-r--r-- | xorg-server/dix/gc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/xorg-server/dix/gc.c b/xorg-server/dix/gc.c index efe6d6090..88d650121 100644 --- a/xorg-server/dix/gc.c +++ b/xorg-server/dix/gc.c @@ -261,12 +261,14 @@ ChangeGC(ClientPtr client, GC * pGC, BITS32 mask, ChangeGCValPtr pUnion) case GCStipple: NEXT_PTR(PixmapPtr, pPixmap); - if ((pPixmap->drawable.depth != 1) || - (pPixmap->drawable.pScreen != pGC->pScreen)) { + if (pPixmap && ((pPixmap->drawable.depth != 1) || + (pPixmap->drawable.pScreen != pGC->pScreen))) + { error = BadMatch; } else { - pPixmap->refcnt++; + if (pPixmap) + pPixmap->refcnt++; if (pGC->stipple) (*pGC->pScreen->DestroyPixmap) (pGC->stipple); pGC->stipple = pPixmap; |