remove sprintf

src/core/SkRegion.cpp

 /*
  * 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.
  */
 
 
 #include "SkAtomics.h"
 #include "SkRegionPriv.h"
@@ skipping 178 matching lines @@
     while (!iter.done()) {
         count++;
         iter.next();
     }
     // 4 ints, up to 10 digits each plus sign, 3 commas, '(', ')', SkRegion() and '\0'
     const int max = (count*((11*4)+5))+11+1;
     char* result = (char*)sk_malloc_throw(max);
     if (result == nullptr) {
         return nullptr;
     }
-    count = sprintf(result, "SkRegion(");
+    count = snprintf(result, max, "SkRegion(");
     iter.reset(*this);
     while (!iter.done()) {
         const SkIRect& r = iter.rect();
-        count += sprintf(result+count, "(%d,%d,%d,%d)", r.fLeft, r.fTop, r.fRight, r.fBottom);
+        count += snprintf(result+count, max - count, 
+                "(%d,%d,%d,%d)", r.fLeft, r.fTop, r.fRight, r.fBottom);
         iter.next();
     }
-    count += sprintf(result+count, ")");
+    count += snprintf(result+count, max - count, ")");
     return result;
 }
 #endif
 
 ///////////////////////////////////////////////////////////////////////////////
 
 int SkRegion::count_runtype_values(int* itop, int* ibot) const {
     int maxT;
 
     if (this->isRect()) {
@@ skipping 1253 matching lines @@
 bool SkRegion::debugSetRuns(const RunType runs[], int count) {
     // we need to make a copy, since the real method may modify the array, and
     // so it cannot be const.
 
     SkAutoTArray<RunType> storage(count);
     memcpy(storage.get(), runs, count * sizeof(RunType));
     return this->setRuns(storage.get(), count);
 }
 
 #endif