LANG.ID.NU.LIBFN : Library Function Override

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A procedure defined in user code has a name that matches a function declared in a system include header in the project. The procedure and header do not need to be in the same compilation unit.

System header status is determined by the setting of configuration parameter SYSTEM_INCLUDE_PATHS.

Class Name

Library Function Override

Significance

security

Mnemonic

LANG.ID.NU.LIBFN

Categories

MisraC2023	MisraC2023:5.8	Identifiers that define objects or functions with external linkage shall be unique
	MisraC2023:5.9	Identifiers that define objects or functions with internal linkage should be unique
Misra2012	Misra2012:5.8	Identifiers that define objects or functions with external linkage shall be unique
	Misra2012:5.9	Identifiers that define objects or functions with internal linkage should be unique
Misra2004	Misra2004:5.7	No identifier name should be reused
AUTOSARC++14	AUTOSARC++14:A2-10-5	An identifier name of a function with static storage duration or a non-member object with external or internal linkage should not be reused.
	AUTOSARC++14:A17-0-1	Reserved identifiers, macros and functions in the C++ standard library shall not be defined, redefined or undefined.
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.
	MisraC++2008:17-0-1	Reserved identifiers, macros and functions in the standard library shall not be defined, redefined or undefined.
CWE	CWE:657	Violation of Secure Design Principles
	CWE:710	Improper Adherence to Coding Standards
	CWE:1076	Insufficient Adherence to Expected Conventions
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="Library Function Override"

#include <math.h>

double fabs (double x){ /* 'Library Function Override' warning issued here */
  return x + 1;
}

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

LANG.ID.NU.LIBFN : Library Function Override

Summary

Properties

Example

Relevant Configuration File Parameters