check for codec null pointer when printing error message...

media/tools/media_bench/media_bench.cc

 // Copyright (c) 2010 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.
 
 // Standalone benchmarking application based on FFmpeg.  This tool is used to
 // measure decoding performance between different FFmpeg compile and run-time
 // options.  We also use this tool to measure performance regressions when
 // testing newer builds of FFmpeg from trunk.
 
 #include "build/build_config.h"
@@ skipping 331 matching lines @@
   if (target_codec == CODEC_TYPE_VIDEO && video_threads > 0) {
     if (avcodec_thread_init(codec_context, video_threads) < 0) {
       std::cerr << "Warning: Could not initialize threading!\n"
                 << "Did you build with pthread/w32thread support?" << std::endl;
     }
   }
 
   // Initialize our codec.
   if (avcodec_open(codec_context, codec) < 0) {
     std::cerr << "Error: Could not open codec "
-              << codec_context->codec->name << " for "
-              << in_path.value() << std::endl;
+              << (codec_context->codec ? codec_context->codec->name : "(NULL)")
+              << " for " << in_path.value() << std::endl;
     return 1;
   }
 
   // Buffer used for audio decoding.
   scoped_ptr_malloc<int16, media::ScopedPtrAVFree> samples(
       reinterpret_cast<int16*>(av_malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE)));
 
   // Buffer used for video decoding.
   scoped_ptr_malloc<AVFrame, media::ScopedPtrAVFree> frame(
       avcodec_alloc_frame());
@@ skipping 222 matching lines @@
 #if defined(ENABLE_WINDOWS_EXCEPTIONS)
   } __except(EXCEPTION_EXECUTE_HANDLER) {
     *log_out << "  Exception:" << std::setw(11) << GetExceptionCode()
              << " " << in_path.value() << std::endl;
     return 1;
   }
 #endif
   CommandLine::Reset();
   return 0;
 }