LANG.STRUCT.INIT.UADI : Unspecified Array Size with Designator Initialization

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A designated initializer is used to initialize an array whose size is not explicitly specified.

Class Name

Unspecified Array Size with Designator Initialization

Significance

style

Mnemonic

LANG.STRUCT.INIT.UADI

Categories

MisraC2023	MisraC2023:9.5	Where designated initializers are used to initialize an array object the size of the array shall be specified explicitly
Misra2012	Misra2012:9.5	Where designated initializers are used to initialize an array object the size of the array shall be specified explicitly
CWE	CWE:1419	Incorrect Initialization of Resource
CERT-C	CERT-C:MSC23-C	Beware of vendor-specific library and language differences

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="Unspecified Array Size with Designator Initialization"

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

void lang_struct_init_uadi( void ){

  int sz_arr[3] = {[0] = 5, [1] = 10};               /* array size specified */               

  int nosz_arr[] = {[0] = 0, [1] = 10}; /* 'Unspecified Array Size with Designator Initialization' warning issued here */ 
}

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

LANG.STRUCT.INIT.UADI : Unspecified Array Size with Designator Initialization

Summary

Properties

Example

Relevant Configuration File Parameters