CONCURRENCY.C_THREAD.ISD : Inappropriate Storage Duration

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A variable of one of the following types is declared as a local or thread local.

cnd_t

mtx_t

thrd_t

tss_t

クラス名

Inappropriate Storage Duration

日本語クラス名

Inappropriate Storage Duration

クラス分類

信頼性 (reliability)

ニーモニック

CONCURRENCY.C_THREAD.ISD

カテゴリー

MisraC2023	MisraC2023:22.13	Thread objects, thread synchronization objects and thread-specific storage pointers shall have appropriate storage duration
Misra2012	Misra2012:22.13	Thread objects, thread synchronization objects and thread-specific storage pointers shall have appropriate storage duration
CWE	CWE:662	Improper Synchronization
CERT-C	CERT-C:CON34-C	Declare objects shared between threads with appropriate storage durations

対応言語

C のみ利用可能です。 C++ は利用できません。

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 Storage Duration"

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。

#include <threads.h>

_Thread_local mtx_t m_tl; /* 'Inappropriate Storage Duration' warning issued here */

_Thread_local int i_tl;            /* ok: type is not thrd_t, mtx_t, cnd_t, or tss_t */

static mtx_t m_static;             /* ok: duration is not thread or automatic */

void c_thread_isd(void){
    mtx_t m_l;            /* 'Inappropriate Storage Duration warning' issued here */
    static mtx_t m_sl;             /* ok: duration is not thread or automatic */

    /* ... */
}

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。

CONCURRENCY.C_THREAD.ISD : Inappropriate Storage Duration

要旨

プロパティ

例

関連のある設定ファイルパラメータ