My clang now doesn't complain about !"foo".

src/gpu/GrDefaultPathRenderer.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 "GrDefaultPathRenderer.h"
 
 #include "GrContext.h"
@@ skipping 423 matching lines @@
                         lastPassIsBounds = true;
                         drawFace[passCount-1] = GrDrawState::kBoth_DrawFace;
                         if (reverse) {
                             passes[passCount-1] = &gInvWindColorPass;
                         } else {
                             passes[passCount-1] = &gWindColorPass;
                         }
                     }
                     break;
                 default:
-                    SkASSERT(!"Unknown path fFill!");
+                    SkDEBUGFAIL("Unknown path fFill!");
                     return false;
             }
         }
     }
 
     SkRect devBounds;
     GetPathDevBounds(path, drawState->getRenderTarget(), viewM, &devBounds);
 
     for (int p = 0; p < passCount; ++p) {
         drawState->setDrawFace(drawFace[p]);
@@ skipping 57 matching lines @@
                                   false);
 }
 
 void GrDefaultPathRenderer::onStencilPath(const SkPath& path,
                                           const SkStrokeRec& stroke,
                                           GrDrawTarget* target) {
     SkASSERT(SkPath::kInverseEvenOdd_FillType != path.getFillType());
     SkASSERT(SkPath::kInverseWinding_FillType != path.getFillType());
     this->internalDrawPath(path, stroke, target, true);
 }