This iOS crash makes little sense to me. Add some debugging.

src/gpu/GrTestUtils.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrStrokeInfo.h"
 #include "GrTestUtils.h"
 #include "SkMatrix.h"
@@ skipping 228 matching lines @@
 
 GrStrokeInfo TestStrokeInfo(SkRandom* random) {
     SkStrokeRec::InitStyle style =
             SkStrokeRec::InitStyle(random->nextULessThan(SkStrokeRec::kFill_InitStyle + 1));
     GrStrokeInfo strokeInfo(style);
     randomize_stroke_rec(&strokeInfo, random);
     SkPathEffect::DashInfo dashInfo;
     dashInfo.fCount = random->nextRangeU(1, 50) * 2;
     SkAutoTMalloc<SkScalar> intervals(dashInfo.fCount);
     dashInfo.fIntervals = intervals.get();
+    SkDebugf("intervals %p, dashInfo.fIntervals %p, dashInfo.fCount %d\n",
+             intervals.get(), dashInfo.fIntervals, dashInfo.fCount);
     SkScalar sum = 0;
     for (int i = 0; i < dashInfo.fCount; i++) {
-    #if defined(SK_BUILD_FOR_IOS)
         SkDebugf("&dashInfo.fIntervals[%d] = %p\n", i, &dashInfo.fIntervals[i]);
-    #endif
         dashInfo.fIntervals[i] = random->nextRangeScalar(SkDoubleToScalar(0.01),
                                                          SkDoubleToScalar(10.0));
         sum += dashInfo.fIntervals[i];
     }
     dashInfo.fPhase = random->nextRangeScalar(0, sum);
     strokeInfo.setDashInfo(dashInfo);
     return strokeInfo;
 }
 
 };
 
 #endif