Fix for SkPathRef::CreateTransformedCopy bug

src/core/SkPathRef.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBuffer.h"
 #include "SkOnce.h"
 #include "SkPath.h"
@@ skipping 44 matching lines @@
     SkDEBUGCODE(src.validate();)
     if (matrix.isIdentity()) {
         if (*dst != &src) {
             src.ref();
             dst->reset(const_cast<SkPathRef*>(&src));
             SkDEBUGCODE((*dst)->validate();)
         }
         return;
     }
 
-    bool dstUnique = (*dst)->unique();
-    if (!dstUnique) {
+    if (!(*dst)->unique()) {
         dst->reset(SkNEW(SkPathRef));
+    }
+
+    if (*dst != &src) {
         (*dst)->resetToSize(src.fVerbCnt, src.fPointCnt, src.fConicWeights.count());
         memcpy((*dst)->verbsMemWritable(), src.verbsMemBegin(), src.fVerbCnt * sizeof(uint8_t));
         (*dst)->fConicWeights = src.fConicWeights;
     }
 
+    SkASSERT((*dst)->countPoints() == src.countPoints());
+    SkASSERT((*dst)->countVerbs() == src.countVerbs());
+    SkASSERT((*dst)->fConicWeights.count() == src.fConicWeights.count());
+
     // Need to check this here in case (&src == dst)
     bool canXformBounds = !src.fBoundsIsDirty && matrix.rectStaysRect() && src.countPoints() > 1;
 
     matrix.mapPoints((*dst)->fPoints, src.points(), src.fPointCnt);
 
     /*
         *  Here we optimize the bounds computation, by noting if the bounds are
         *  already known, and if so, we just transform those as well and mark
         *  them as "known", rather than force the transformed path to have to
         *  recompute them.
@@ skipping 258 matching lines @@
                      fBounds.fTop  - fPoints[i].fY   < SK_ScalarNearlyZero &&
                      fPoints[i].fY - fBounds.fBottom < SK_ScalarNearlyZero));
             if (!fPoints[i].isFinite()) {
                 isFinite = false;
             }
         }
         SkASSERT(SkToBool(fIsFinite) == isFinite);
     }
 }
 #endif