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

src/utils/win/SkDWriteGeometrySink.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkTypes.h"
 
 #include "SkDWriteGeometrySink.h"
@@ skipping 35 matching lines @@
 
 void STDMETHODCALLTYPE SkDWriteGeometrySink::SetFillMode(D2D1_FILL_MODE fillMode) {
     switch (fillMode) {
     case D2D1_FILL_MODE_ALTERNATE:
         fPath->setFillType(SkPath::kEvenOdd_FillType);
         break;
     case D2D1_FILL_MODE_WINDING:
         fPath->setFillType(SkPath::kWinding_FillType);
         break;
     default:
-        SkASSERT(!"Unknown D2D1_FILL_MODE.");
+        SkDEBUGFAIL("Unknown D2D1_FILL_MODE.");
         break;
     }
 }
 
 void STDMETHODCALLTYPE SkDWriteGeometrySink::SetSegmentFlags(D2D1_PATH_SEGMENT vertexFlags) {
     if (vertexFlags == D2D1_PATH_SEGMENT_NONE || vertexFlags == D2D1_PATH_SEGMENT_FORCE_ROUND_LINE_JOIN) {
-        SkASSERT(!"Invalid D2D1_PATH_SEGMENT value.");
+        SkDEBUGFAIL("Invalid D2D1_PATH_SEGMENT value.");
     }
 }
 
 void STDMETHODCALLTYPE SkDWriteGeometrySink::BeginFigure(D2D1_POINT_2F startPoint, D2D1_FIGURE_BEGIN figureBegin) {
     fPath->moveTo(SkFloatToScalar(startPoint.x), SkFloatToScalar(startPoint.y));
     if (figureBegin == D2D1_FIGURE_BEGIN_HOLLOW) {
-        SkASSERT(!"Invalid D2D1_FIGURE_BEGIN value.");
+        SkDEBUGFAIL("Invalid D2D1_FIGURE_BEGIN value.");
     }
 }
 
 void STDMETHODCALLTYPE SkDWriteGeometrySink::AddLines(const D2D1_POINT_2F *points, UINT pointsCount) {
     for (const D2D1_POINT_2F *end = &points[pointsCount]; points < end; ++points) {
         fPath->lineTo(SkFloatToScalar(points->x), SkFloatToScalar(points->y));
     }
 }
 
 static bool approximately_equal(float a, float b) {
@@ skipping 56 matching lines @@
 }
 
 HRESULT SkDWriteGeometrySink::Close() {
     return S_OK;
 }
 
 HRESULT SkDWriteGeometrySink::Create(SkPath* path, IDWriteGeometrySink** geometryToPath) {
     *geometryToPath = new SkDWriteGeometrySink(path);
     return S_OK;
 }