Fix crash reporting of child process command line switches.

chrome/common/crash_keys.cc

 // Copyright (c) 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 "chrome/common/crash_keys.h"
 
 #include "base/command_line.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/strings/string_split.h"
@@ skipping 262 matching lines @@
 #if defined(OS_WIN)
     std::string switch_str = base::WideToUTF8(argv[i]);
 #else
     std::string switch_str = argv[i];
 #endif
 
     // Skip uninteresting switches.
     if (IsBoringSwitch(switch_str))
       continue;
 
+    // Stop if there are too many switches.
+    if (i > crash_keys::kSwitchesMaxCount)
+      break;
+
     std::string key = base::StringPrintf(kSwitch, key_i++);
     base::debug::SetCrashKeyValue(key, switch_str);
   }
 
   // Clear any remaining switches.
   for (; key_i <= kSwitchesMaxCount; ++key_i) {
     base::debug::ClearCrashKey(base::StringPrintf(kSwitch, key_i));
   }
 }
 
@@ skipping 45 matching lines @@
 }
 
 ScopedPrinterInfo::~ScopedPrinterInfo() {
   for (size_t i = 0; i < kPrinterInfoCount; ++i) {
     std::string key = base::StringPrintf(kPrinterInfo, i + 1);
     base::debug::ClearCrashKey(key);
   }
 }
 
 }  // namespace crash_keys