Adding check on input count

include/core/SkTemplates.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkTemplates_DEFINED
 #define SkTemplates_DEFINED
 
+#include "SkMath.h"
 #include "SkTypes.h"
 #include <limits.h>
 #include <new>
 
 /** \file SkTemplates.h
 
     This file contains light-weight template classes for type-safe and exception-safe
     resource management.
 */
 
@@ skipping 262 matching lines @@
         }
 
         if (fCount != count) {
             if (fCount > N) {
                 // 'fArray' was allocated last time so free it now
                 SkASSERT((T*) fStorage != fArray);
                 sk_free(fArray);
             }
 
             if (count > N) {
-                fArray = (T*) sk_malloc_throw(count * sizeof(T));
+                const uint64_t size64 = sk_64_mul(count, sizeof(T));
+                const size_t size = static_cast<size_t>(size64);
+                if (size != size64) {
+                    sk_out_of_memory();
+                }
+                fArray = (T*) sk_malloc_throw(size);
             } else if (count > 0) {
                 fArray = (T*) fStorage;
             } else {
                 fArray = NULL;
             }
 
             fCount = count;
         }
 
         iter = fArray;
@@ skipping 178 matching lines @@
     /**
      * Returns void* because this object does not initialize the
      * memory. Use placement new for types that require a cons.
      */
     void* get() { return fStorage.get(); }
 private:
     SkAlignedSStorage<sizeof(T)*N> fStorage;
 };
 
 #endif