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

LANG.STRUCT.INIT.ICDI : Inconsistent Chained Designator Initialization

要旨

Some elements of an object are initialized with designators, but some are initialized without designators.

See also Partially Uninitialized Aggregate.

プロパティ

クラス名 Inconsistent Chained Designator Initialization
日本語クラス名 Inconsistent Chained Designator Initialization
クラス分類 スタイル (style)
ニーモニック LANG.STRUCT.INIT.ICDI
カテゴリー
MisraC2025 MisraC2025:9.6 An initializer using chained designators shall not contain initializers without designators
MisraC2023 MisraC2023:9.6 An initializer using chained designators shall not contain initializers without designators
Misra2012 Misra2012:9.6 An initializer using chained designators shall not contain initializers without designators
CWE CWE:665 Improper Initialization
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="Inconsistent Chained Designator Initialization"
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。

例 

struct S { int x; int y; };

struct T {
    int w;
    struct S s;
    int z;
};

struct T t1 = { /* 'Inconsistent Chained Designator Initialization' warning issued here
                 * - fields .w and .s.y are initialized without designators
                 * - 'Partially Uninitialized Aggregate' warning also issued if enabled,
                 *    because field .z is not initialized at all
                 */
    1,
    .s.x = 2,
    3,          /* a human reader may assume that this initializes .z but it
                 * actually initializes .s.y, as if the initialization of t1
                 * was written  { 1, { 2, 3 }, 0 }
                 */
};

struct T t2 =  {                      /* ok: all fields initialized with designators */
    .w = 1,
    .s = {2, 3},
    .z = 4,
};

struct T t3 = { 1, {2,3}, 4 };        /* ok: no fields initialized without designators */

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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