LANG.PREPROC.UMIF : #if内で未定義マクロの使用

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C and C++

LANG.PREPROC.UMIF : #if内で未定義マクロの使用

要旨

プリプロセッサの制御表現 #if あるいは #elif ステートメントが #define で定義されるよりも前で使用されています。

プロパティ

クラス名

Undefined Macro in #if

日本語クラス名

#if内で未定義マクロの使用

クラス分類

スタイル (style)

ニーモニック

LANG.PREPROC.UMIF

カテゴリー

MisraC2025	MisraC2025:20.9	All identifiers used in the controlling expression of #if or #elif preprocessing directives shall be #define'd before evaluation
MisraC2023	MisraC2023:20.9	All identifiers used in the controlling expression of #if or #elif preprocessing directives shall be #define'd before evaluation
Misra2012	Misra2012:20.9	All identifiers used in the controlling expression of #if or #elif preprocessing directives shall be #define'd before evaluation
Misra2004	Misra2004:19.11	All macro identifiers in preprocessor directives shall be defined before use, except in #ifdef and #ifndef preprocessor directives and the defined() operator
AUTOSARC++14	AUTOSARC++14:M16-0-7	Undefined macro identifiers shall not be used in #if or #elif pre-processor directives, except as operands to the defined operator.
MisraC++2008	MisraC++2008:16-0-7	Undefined macro identifiers shall not be used in #if or #elif preprocessor directives, except as operands to the defined operator.
MisraC++2023	MisraC++2023:19.1.3	All identifiers used in the controlling expression of #if or #elif preprocessing directives shall be #define'd at the point of evaluation

対応言語

C および C++ で利用可能です。

有効/無効設定

Checks for this warning class are enabled by default. However, warning instances of this class that are issued as parser errors (rather than parser warnings) will be discarded when using factory configuration settings. To prevent these instances from being discarded, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += allow class="Undefined Macro in #if"

To disable checks for this warning class, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += discard class="Undefined Macro in #if"

例

#define ONE 1
#define TWO 2

#if TWO > ONE                                /* both identifiers are defined macros */
/* ... */
#endif 

#if THREE > ONE /* 'Undefined Macro in #if' warning issued here: THREE not defined. */
/* ... */                                     
#endif

#if FOUR > ONE  /* 'Undefined Macro in #if' warning issued here: FOUR defined, but not until later. */
/* ... */                                     
#endif
#define FOUR 4

#if 2 > 1                                    /* no identifiers */
/* ... */
#endif

static int two=2;
#if two > ONE   /* 'Undefined Macro in #if' warning issued here: two not defined with #define */
/* ... */
#endif

LANG.PREPROC.UMIF : #if内で未定義マクロの使用

要旨

プロパティ

例

関連のある設定ファイルパラメータ