SafeSPrintf: use C++ variadic template

base/strings/safe_sprintf_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/strings/safe_sprintf.h"
 
 #include <stdio.h>
 #include <string.h>
 
 #include <limits>
@@ skipping 246 matching lines @@
   EXPECT_EQ("\1\2\3\4\5\6\7", std::string(buf));
   EXPECT_EQ(8, SafeSNPrintf(buf, 11, "%c%c%c%c%c%c%c%c",
                             1, 2, 3, 4, 5, 6, 7, 8));
   EXPECT_EQ("\1\2\3\4\5\6\7\10", std::string(buf));
   EXPECT_EQ(9, SafeSNPrintf(buf, 11, "%c%c%c%c%c%c%c%c%c",
                             1, 2, 3, 4, 5, 6, 7, 8, 9));
   EXPECT_EQ("\1\2\3\4\5\6\7\10\11", std::string(buf));
   EXPECT_EQ(10, SafeSNPrintf(buf, 11, "%c%c%c%c%c%c%c%c%c%c",
                              1, 2, 3, 4, 5, 6, 7, 8, 9, 10));
   EXPECT_EQ("\1\2\3\4\5\6\7\10\11\12", std::string(buf));
+
+  EXPECT_EQ(11, SafeSPrintf(buf, "%c%c%c%c%c%c%c%c%c%c%c",
+                            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11));
+  EXPECT_EQ("\1\2\3\4\5\6\7\10\11\12\13", std::string(buf));
+  EXPECT_EQ(11, SafeSNPrintf(buf, 12, "%c%c%c%c%c%c%c%c%c%c%c",
+                             1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11));
+  EXPECT_EQ("\1\2\3\4\5\6\7\10\11\12\13", std::string(buf));
 }
 
 TEST(SafeSPrintfTest, DataTypes) {
   char buf[40];
 
   // Bytes
   EXPECT_EQ(1, SafeSPrintf(buf, "%d", (uint8_t)1));
   EXPECT_EQ("1", std::string(buf));
   EXPECT_EQ(3, SafeSPrintf(buf, "%d", (uint8_t)-1));
   EXPECT_EQ("255", std::string(buf));
@@ skipping 466 matching lines @@
   void *ptr = str;
   char buf[40];
   EXPECT_EQ(10, SafeSPrintf(buf, "%p", str));
   EXPECT_EQ("0x80000000", std::string(buf));
   EXPECT_EQ(10, SafeSPrintf(buf, "%p", ptr));
   EXPECT_EQ("0x80000000", std::string(buf));
 }
 
 }  // namespace strings
 }  // namespace base