LANG.ID.NU.INT : Non-unique Identifiers: Internal Name

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An identifier with internal linkage is identical to one or more other identifiers.

See Identifier Classes for related warning classes.

Class Name

Non-unique Identifiers: Internal Name

Significance

style

Mnemonic

LANG.ID.NU.INT

Categories

MisraC2023	MisraC2023:5.9	Identifiers that define objects or functions with internal linkage should be unique
Misra2012	Misra2012:5.9	Identifiers that define objects or functions with internal linkage should be unique
Misra2004	Misra2004:5.5	No object or function identifier with static storage duration should be reused
AUTOSARC++14	AUTOSARC++14:A2-10-4	The identifier name of a non-member object with static storage duration or static function shall not be reused within a namespace.
MisraC++2008	MisraC++2008:2-10-5	The identifier name of a non-member object or function with static storage duration should not be reused.
CWE	CWE:710	Improper Adherence to Coding Standards
CERT-C	CERT-C:DCL23-C	Guarantee that mutually visible identifiers are unique

Availability

Available for C and C++.

Enabling

Checks for this warning class are disabled by default. To enable them, add the following WARNING_FILTER rule to the project configuration file.

WARNING_FILTER += allow class="Non-unique Identifiers: Internal Name"

Suppose fileA.c and fileB.c are both in the analyzed software (but not necessarily in the same compilation unit).

/* LANG.ID.NU.INT.a.c */

#define internA 1
typedef int internB;
void internC(void);

/* LANG.ID.NU.INT.b.c */

static int internA;            /* 'Non-unique Identifiers: Internal Name' warning issued here */
static int internB;            /* 'Non-unique Identifiers: Internal Name' warning issued here */
static int internC;            /* 'Non-unique Identifiers: Internal Name' warning issued here */

The following configuration file parameters affect checks for this warning class.

LANG.ID.NU.INT : Non-unique Identifiers: Internal Name

Summary

Properties

Example

Relevant Configuration File Parameters