LANG.STRUCT.INIT.UNORDERED : Unordered Initialization

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A non-local variable is initialized using another variable that is initialized in a different translation unit.

Order of initialization across compilation units is not determined.

Class Name

Unordered Initialization

Significance

reliability

Mnemonic

LANG.STRUCT.INIT.UNORDERED

Categories

AUTOSARC++14	AUTOSARC++14:A3-3-2	Static and thread-local objects shall be constant-initialized.
CWE	CWE:1419	Incorrect Initialization of Resource
CERT-CPP	CERT-CPP:DCL56-CPP	Avoid cycles during initialization of static objects
JSF++	JSF++:214	Assuming that non-local static objects, in separate translation units, are initialized in a special order shall not be done.
POW10	POW10:1	Restrict to simple control flow constructs.

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="Unordered 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.

// LANG.STRUCT.INIT.UNORDERED.a.cpp

extern int init_in_b_file;

int b = init_in_b_file; // 'Unordered Initialization' warning issued here

// LANG.STRUCT.INIT.UNORDERED.b.cpp

int init_in_b_file = 5;

int y = init_in_b_file;             // ok: int init_in_b_file is initialized earlier in the same file

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

LANG.STRUCT.INIT.UNORDERED : Unordered Initialization

Summary

Properties

Example

Relevant Configuration File Parameters