Guard against most unintentionally ephemeral SkAutoFoo instantiations.

samplecode/SampleLayers.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "SampleCode.h"
 #include "SkView.h"
 #include "SkCanvas.h"
@@ skipping 43 matching lines @@
 
 // test drawing with strips of fading gradient above and below
 static void test_fade(SkCanvas* canvas) {
     SkAutoCanvasRestore ar(canvas, true);
 
     SkRect r;
 
     SkPaint p;
     p.setAlpha(0x88);
 
-    SkAutoCanvasRestore(canvas, false);
+    SkAutoCanvasRestore ar2(canvas, false);
 
     // create the layers
 
     r.set(0, 0, SkIntToScalar(100), SkIntToScalar(100));
     canvas->clipRect(r);
 
     r.fBottom = SkIntToScalar(20);
     canvas->saveLayer(&r, NULL, (SkCanvas::SaveFlags)(SkCanvas::kHasAlphaLayer_SaveFlag | SkCanvas::kFullColorLayer_SaveFlag));
 
     r.fTop = SkIntToScalar(80);
@@ skipping 191 matching lines @@
     }
 
 private:
     typedef SkView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new LayersView; }
 static SkViewRegister reg(MyFactory);