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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
C and C++


LANG.TYPE.ICTE : 複合式に対する不適切な型へのキャスト

要旨

複合式の値が、異なる実質的な型 もしくは、より大きな実質的な型にキャストされています。

このワーニングクラスは、クリティカルシステム向けのC言語ガイドラインMISRA C:2012実質的な型および 複合式に記載されている概念に基づいています。

Exception 1: warning of this class will not be issued when an expression of essentially real floating type is cast to an essentially complex floating type, provided that the corresponding real type is not wider than the type of the expression.

Exception 2: a warning of this class will not be issued when an expression of essentially complex floating type is cast to an essentially real floating type, provided that the type is not wider than the corresponding real type of the expression.

プロパティ

クラス名 Inappropriate Cast Type: Expression
日本語クラス名 複合式に対する不適切な型へのキャスト
クラス分類 スタイル (style)
ニーモニック LANG.TYPE.ICTE
カテゴリー
MisraC2025 MisraC2025:10.8 The value of a composite expression shall not be cast to a different essential type category or a wider essential type
MisraC2023 MisraC2023:10.8 The value of a composite expression shall not be cast to a different essential type category or a wider essential type
Misra2012 Misra2012:10.8 The value of a composite expression shall not be cast to a different essential type category or a wider essential type
Misra2004 Misra2004:10.3 The value of a complex expression of integer type shall only be cast to a type of the same signedness that is no wider than the underlying type of the expression
  Misra2004:10.4 The value of a complex expression of floating type shall only be cast to a floating type that is narrower or of the same size
AUTOSARC++14 AUTOSARC++14:M5-0-7 There shall be no explicit floating-integral conversions of a cvalue expression.
  AUTOSARC++14:M5-0-8 An explicit integral or floating-point conversion shall not increase the size of the underlying type of a cvalue expression.
MisraC++2008 MisraC++2008:5-0-7 There shall be no explicit floating-integral conversions of a cvalue expression.
  MisraC++2008:5-0-8 An explicit integral or floating-point conversion shall not increase the size of the underlying type of a cvalue expression.
CWE CWE:704 Incorrect Type Conversion or Cast
対応言語 C および 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無効になっており、プロジェクトには非正規の C向けAST が必要になります。有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 ルールと RETAIN_UNNORMALIZED_C_AST 設定を追加してください。
RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Inappropriate Cast Type: Expression"
注:非正規化された AST を継続して使用した場合、使用ディスク容量が増加し解析時間が長くなる可能性があります。

void use_longs(long long1, long long2, long long3);

void TYPE_ICTE(short s1, short s2){
    long l1;
    long l2;
    long l3;
    double d;

    l1 = (long) (s1 + s2);   /* 'Inappropriate Cast Type: Expression' warning issued here */
    l2 = (double) (s1 + s2); /* 'Inappropriate Cast Type: Expression' warning issued here */
    l3 = (long) s1 + s2;                            /* operand of cast is s1 - not a composite expression */
    use_longs(l1, l2, l3);
}

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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