diff --git a/Xext/shm.c b/Xext/shm.c
index 1e236cc51..9cface24d 100644
--- a/Xext/shm.c
+++ b/Xext/shm.c
@@ -482,7 +482,7 @@ doShmPutImage(DrawablePtr dst, GCPtr pGC,
                                          PixmapBytePad(w, depth), data);
         if (!pPixmap)
             return;
-        pGC->ops->CopyArea((DrawablePtr) pPixmap, dst, pGC, sx, sy, sw, sh, dx,
+        (void) pGC->ops->CopyArea((DrawablePtr) pPixmap, dst, pGC, sx, sy, sw, sh, dx,
                            dy);
         FreeScratchPixmapHeader(pPixmap);
     }
diff --git a/composite/compalloc.c b/composite/compalloc.c
index f97b6c688..8e9891b9a 100644
--- a/composite/compalloc.c
+++ b/composite/compalloc.c
@@ -247,7 +247,7 @@ compRestoreWindow(WindowPtr pWin, PixmapPtr pPixmap)
             val.val = IncludeInferiors;
             ChangeGC(NullClient, pGC, GCSubwindowMode, &val);
             ValidateGC(&pWin->drawable, pGC);
-            (*pGC->ops->CopyArea) (&pPixmap->drawable,
+            (void) (*pGC->ops->CopyArea) (&pPixmap->drawable,
                                    &pWin->drawable, pGC, x, y, w, h, 0, 0);
             FreeScratchGC(pGC);
         }
@@ -552,7 +552,7 @@ compNewPixmap(WindowPtr pWin, int x, int y, int w, int h)
             val.val = IncludeInferiors;
             ChangeGC(NullClient, pGC, GCSubwindowMode, &val);
             ValidateGC(&pPixmap->drawable, pGC);
-            (*pGC->ops->CopyArea) (&pParent->drawable,
+            (void) (*pGC->ops->CopyArea) (&pParent->drawable,
                                    &pPixmap->drawable,
                                    pGC,
                                    x - pParent->drawable.x,
diff --git a/dbe/midbe.c b/dbe/midbe.c
index 0b3b25ade..007f985c3 100644
--- a/dbe/midbe.c
+++ b/dbe/midbe.c
@@ -275,7 +275,7 @@ miDbeSwapBuffers(ClientPtr client, int *pNumWindows, DbeSwapInfoPtr swapInfo)
 
     case XdbeUntouched:
         ValidateGC((DrawablePtr) pDbeWindowPriv->pFrontBuffer, pGC);
-        (*pGC->ops->CopyArea) ((DrawablePtr) pWin,
+        (void) (*pGC->ops->CopyArea) ((DrawablePtr) pWin,
                                (DrawablePtr) pDbeWindowPriv->pFrontBuffer,
                                pGC, 0, 0, pWin->drawable.width,
                                pWin->drawable.height, 0, 0);
@@ -293,7 +293,7 @@ miDbeSwapBuffers(ClientPtr client, int *pNumWindows, DbeSwapInfoPtr swapInfo)
      */
 
     ValidateGC((DrawablePtr) pWin, pGC);
-    (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPriv->pBackBuffer,
+    (void) (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPriv->pBackBuffer,
                            (DrawablePtr) pWin, pGC, 0, 0,
                            pWin->drawable.width, pWin->drawable.height, 0, 0);
 
@@ -620,7 +620,7 @@ miDbePositionWindow(WindowPtr pWin, int x, int y)
         }
         /* Copy the contents of the old front pixmap to the new one. */
         if (pWin->bitGravity != ForgetGravity) {
-            (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPriv->pFrontBuffer,
+            (void) (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPriv->pFrontBuffer,
 				   (DrawablePtr) pFrontBuffer, pGC,
 				   sourcex, sourcey, savewidth, saveheight,
                                    destx, desty);
@@ -633,7 +633,7 @@ miDbePositionWindow(WindowPtr pWin, int x, int y)
         }
         /* Copy the contents of the old back pixmap to the new one. */
         if (pWin->bitGravity != ForgetGravity) {
-            (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPriv->pBackBuffer,
+            (void) (*pGC->ops->CopyArea) ((DrawablePtr) pDbeWindowPriv->pBackBuffer,
 				   (DrawablePtr) pBackBuffer, pGC,
                                    sourcex, sourcey, savewidth, saveheight,
                                    destx, desty);
diff --git a/dix/pixmap.c b/dix/pixmap.c
index a58795c78..a5db9c8bc 100644
--- a/dix/pixmap.c
+++ b/dix/pixmap.c
@@ -278,7 +278,7 @@ PixmapDirtyCopyArea(PixmapPtr dst, DrawablePtr src,
         w = dst_box.x2 - dst_box.x1;
         h = dst_box.y2 - dst_box.y1;
 
-        pGC->ops->CopyArea(src, &dst->drawable, pGC,
+        (void) pGC->ops->CopyArea(src, &dst->drawable, pGC,
                            x + dst_box.x1, y + dst_box.y1, w, h,
                            dst_x + dst_box.x1, dst_y + dst_box.y1);
         b++;
diff --git a/glamor/glamor_egl.c b/glamor/glamor_egl.c
index c2f49131b..5e0cbb035 100644
--- a/glamor/glamor_egl.c
+++ b/glamor/glamor_egl.c
@@ -354,7 +354,7 @@ glamor_make_pixmap_exportable(PixmapPtr pixmap, Bool modifiers_ok)
 
     scratch_gc = GetScratchGC(pixmap->drawable.depth, screen);
     ValidateGC(&pixmap->drawable, scratch_gc);
-    scratch_gc->ops->CopyArea(&pixmap->drawable, &exported->drawable,
+    (void) scratch_gc->ops->CopyArea(&pixmap->drawable, &exported->drawable,
                               scratch_gc,
                               0, 0, width, height, 0, 0);
     FreeScratchGC(scratch_gc);
diff --git a/hw/xfree86/drivers/modesetting/dri2.c b/hw/xfree86/drivers/modesetting/dri2.c
index 86092565f..db755613a 100644
--- a/hw/xfree86/drivers/modesetting/dri2.c
+++ b/hw/xfree86/drivers/modesetting/dri2.c
@@ -320,7 +320,7 @@ ms_dri2_copy_region2(ScreenPtr screen, DrawablePtr drawable, RegionPtr pRegion,
      * callback chain so we know that will happen before the client
      * tries to render again.
      */
-    gc->ops->CopyArea(src, dst, gc,
+    (void) gc->ops->CopyArea(src, dst, gc,
                       0, 0,
                       drawable->width, drawable->height,
                       off_x, off_y);
diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c b/hw/xfree86/drivers/modesetting/drmmode_display.c
index a21198b35..a3e293155 100644
--- a/hw/xfree86/drivers/modesetting/drmmode_display.c
+++ b/hw/xfree86/drivers/modesetting/drmmode_display.c
@@ -1565,7 +1565,7 @@ drmmode_copy_fb(ScrnInfoPtr pScrn, drmmode_ptr drmmode)
     gc = GetScratchGC(pScrn->depth, pScreen);
     ValidateGC(&dst->drawable, gc);
 
-    (*gc->ops->CopyArea)(&src->drawable, &dst->drawable, gc, 0, 0,
+    (void) (*gc->ops->CopyArea)(&src->drawable, &dst->drawable, gc, 0, 0,
                          pScrn->virtualX, pScrn->virtualY, 0, 0);
 
     FreeScratchGC(gc);
diff --git a/mi/mibitblt.c b/mi/mibitblt.c
index 0b13e49e4..dbcd94c99 100644
--- a/mi/mibitblt.c
+++ b/mi/mibitblt.c
@@ -465,7 +465,7 @@ miOpqStipDrawable(DrawablePtr pDraw, GCPtr pGC, RegionPtr prgnSrc,
     gcv[0].val = GXinvert;
     ChangeGC(NullClient, pGCT, GCFunction, gcv);
     ValidateGC((DrawablePtr) pPixmap, pGCT);
-    (*pGCT->ops->CopyArea) ((DrawablePtr) pPixmap, (DrawablePtr) pPixmap,
+    (void) (*pGCT->ops->CopyArea) ((DrawablePtr) pPixmap, (DrawablePtr) pPixmap,
                             pGCT, 0, 0, w + srcx, h, 0, 0);
 
     /* Swap foreground and background colors on the GC for the drawable.
diff --git a/mi/midispcur.c b/mi/midispcur.c
index e5a982976..dc4928fd7 100644
--- a/mi/midispcur.c
+++ b/mi/midispcur.c
@@ -408,7 +408,7 @@ miDCSaveUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen,
     pGC = pBuffer->pSaveGC;
     if (pSave->drawable.serialNumber != pGC->serialNumber)
         ValidateGC((DrawablePtr) pSave, pGC);
-    (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
+    (void) (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
                            x, y, w, h, 0, 0);
     return TRUE;
 }
@@ -432,7 +432,7 @@ miDCRestoreUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen,
     pGC = pBuffer->pRestoreGC;
     if (pWin->drawable.serialNumber != pGC->serialNumber)
         ValidateGC((DrawablePtr) pWin, pGC);
-    (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
+    (void) (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
                            0, 0, w, h, x, y);
     return TRUE;
 }
diff --git a/present/present.c b/present/present.c
index 6fb73901e..7e8c7506b 100644
--- a/present/present.c
+++ b/present/present.c
@@ -84,7 +84,7 @@ present_copy_region(DrawablePtr drawable,
         (*gc->funcs->ChangeClip)(gc, CT_REGION, update, 0);
     }
     ValidateGC(drawable, gc);
-    (*gc->ops->CopyArea)(&pixmap->drawable,
+    (void) (*gc->ops->CopyArea)(&pixmap->drawable,
                          drawable,
                          gc,
                          0, 0,