LANG.TYPE.BFSHORT : Signed One Bit Field

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CodeSonar^® 9.2p0

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CodeSecure Inc

C and C++

LANG.TYPE.BFSHORT : Signed One Bit Field

要旨

（明示的もしくは暗黙的な）符号付き整数型のビットフィールドの幅が 1ビットで定義されています。

プロパティ

クラス名

Signed One Bit Field

日本語クラス名

Signed One Bit Field

クラス分類

スタイル (style)

ニーモニック

LANG.TYPE.BFSHORT

カテゴリー

MisraC2025	MisraC2025:6.2	Single-bit named bit-fields shall not be of a signed type
MisraC2023	MisraC2023:6.2	Single-bit named bit-fields shall not be of a signed type
Misra2012	Misra2012:6.2	Single-bit named bit fields shall not be of a signed type
Misra2004	Misra2004:6.5	Bit fields of signed type shall be at least 2 bits long
AUTOSARC++14	AUTOSARC++14:M9-6-4	Named bit-fields with signed integer type shall have a length of more than one bit.
MisraC++2008	MisraC++2008:9-6-4	Named bit-fields with signed integer type shall have a length of more than one bit.
MisraC++2023	MisraC++2023:12.2.1	Bit fields should not be declared
	MisraC++2023:12.2.3	A named bit-field with signed integer type shall not have a length of one bit

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="Signed One Bit Field"

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

WARNING_FILTER += discard class="Signed One Bit Field"

例

typedef int plainint;
typedef signed int signedint;
typedef unsigned int uint;

struct widthstruct{
  signed int si1      : 2;
  signed int si2      : 1; /* 'Signed One Bit Field' warning issued here */
  signedint si3       : 1; /* 'Signed One Bit Field' warning issued here */
  unsigned int si4    : 1;
  uint si5            : 1;
  int si6             : 1; /* 'Signed One Bit Field' warning issued here */
  plainint si7        : 1; /* 'Signed One Bit Field' warning issued here */
};

LANG.TYPE.BFSHORT : Signed One Bit Field

要旨

プロパティ

例

関連のある設定ファイルパラメータ