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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
C#

CSHARP.STRUCT.EXCP.GEH : Generic Exception Handler (C#)

要旨

An exception handler is used for a very generic exception type.

This checker controls if exception handlers might be incorrect. For instance, an exception handler with an empty body might be an unfinished snippet of code; an exception handler for a very generic exception type might end up catching too many exceptions, also some that were not meant to be caught there.

プロパティ

クラス名 Generic Exception Handler (C#)
日本語クラス名 Generic Exception Handler (C#)
クラス分類 信頼性 (reliability)
ニーモニック CSHARP.STRUCT.EXCP.GEH
カテゴリー
CWE CWE:396 Declaration of Catch for Generic Exception
OWASP-2025 OWASP-2025:A10 Mishandling of Exceptional Conditions
対応言語 C# で利用可能です。
有効/無効設定 このワーニングクラスのチェックはデフォルトで有効になっています。チェックを無効にするにはプロジェクト設定ファイル （configuration file）に以下の WARNING_FILTER ルールを追加してください。 
WARNING_FILTER += discard class="Generic Exception Handler (C#)"

例 

using System;
using System.IO;


namespace DocumentationExamples
{

    public class ExceptionHandlers
    {
        public static void Main(string[] args)
        {
            StreamWriter fw = null;
            try
            {
                fw = new StreamWriter(args[0]);
                fw.Dispose();
            }
            catch (IndexOutOfRangeException e) { }  // Empty Exception Handler (C#) warning issued here
            catch (Exception e)                     // Generic Exception Handler (C#) warning issued here
            {
                Console.WriteLine("unusual");
            }
        }
    }
}

The programmer could resolve these warnings as follows. 

public static void Main(string[] args)
{
    StreamWriter fw = null;
    try
    {
        fw = new StreamWriter(args[0]);
        fw.Dispose();
    }
    catch (IndexOutOfRangeException e) {         // resolve "Empty Exception Handler (C#)" warning by printing a message to the user
        Console.WriteLine("usage: Main filename");
    } 
    catch (IOException e)                        // resolve "Generic Exception Handler (C#)" warning by catching IOException instead of Exception
    {
        Console.WriteLine("I/O error");
    }
}

解決法

Add a body to the exception handler, or narrow to the exception types.

関連のある設定ファイルパラメータ

設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。

 

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