LANG.STRUCT.DECL.MGT : Global Variable Declared with Different

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LANG.STRUCT.DECL.MGT : Global Variable Declared with Different Types

A global variable has been declared in multiple places with different types.

Class Name

Global Variable Declared with Different Types

Significance

reliability

Mnemonic

LANG.STRUCT.DECL.MGT

Categories

MisraC2023	MisraC2023:8.3	All declarations of an object or function shall use the same names and type qualifiers
Misra2012	Misra2012:8.3	All declarations of an object or function shall use the same names and type qualifiers
Misra2004	Misra2004:8.3	For each function parameter the type given in the declaration and definition shall be identical, and the return types shall also be identical
	Misra2004:8.4	If objects or functions are declared more than once their types shall be compatible
	Misra2004:16.4	The identifiers used in the declaration and definition of a function shall be identical
AUTOSARC++14	AUTOSARC++14:M3-2-1	All declarations of an object or function shall have compatible types.
	AUTOSARC++14:M3-9-1	The types used for an object, a function return type, or a function parameter shall be token-for-token identical in all declarations and re-declarations.
MisraC++2008	MisraC++2008:3-2-1	All declarations of an object or function shall have compatible types.
	MisraC++2008:3-9-1	The types used for an object, a function return type, or a function parameter shall be token-for-token identical in all declarations and re-declarations.
MisraC++2023	MisraC++2023:6.2.2	All declarations of a variable or function shall have the same type
CWE	CWE:710	Improper Adherence to Coding Standards
TS17961	TS17961:5.13-funcdecl	5.13. Declaring the same function or object in incompatible ways
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, and require the unnormalized C ASTs for the project. To enable them, add the following WARNING_FILTER rule and RETAIN_UNNORMALIZED_C_AST specification to the project configuration file.

RETAIN_UNNORMALIZED_C_AST = Yes
WARNING_FILTER += allow class="Global Variable Declared with Different Types"

Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer.

A warning will be issued for the following pair of declarations.

/* LANG.STRUCT.DECL.MGT.a.c */

int params[10];

/* LANG.STRUCT.DECL.MGT.b.c */

int params[]; /* 'Global Variable Declared with Different Types' warning issued here */

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

LANG.STRUCT.DECL.MGT : Global Variable Declared with Different Types

Summary

Properties

Example

Relevant Configuration File Parameters