LANG.ARITH.DIVZERO : Division By Zero

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An attempt to perform integer division where the denominator evaluates to zero.

Class Name

Division By Zero

Significance

reliability

Mnemonic

LANG.ARITH.DIVZERO

Categories

MisraC2023	MisraC2023:1.3	There shall be no occurrence of undefined or critical unspecified behaviour
Misra2012	Misra2012:1.3	There shall be no occurrence of undefined or critical unspecified behaviour
AUTOSARC++14	AUTOSARC++14:A5-6-1	The right hand operand of the integer division or remainder operators shall not be equal to zero.
MisraC++2023	MisraC++2023:4.1.3	There shall be no occurrence of undefined or critical unspecified behaviour
CWE	CWE:369	Divide By Zero
	CWE:573	Improper Following of Specification by Caller
TS17961	TS17961:5.25-diverr	5.25. Integer division errors
CERT-C	CERT-C:INT33-C	Ensure that division and remainder operations do not result in divide-by-zero errors
DISA-3r10	DISA-3r10:V-16808	The designer will ensure the application is not vulnerable to integer arithmetic issues.

Availability

Available for C and C++.

Enabling

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

WARNING_FILTER += discard class="Division By Zero"

int divzero(void){
    int c = 5;
    int d;
    d = c*c - 20;       /* 'Unused Value' warning issued here
                         * - d is only used in a statement
                         *   that causes a program crash (via Division by Zero),
                         *   so CodeSonar considers it unused.
                         */
    return d  / (d-c);  /* 'Division By Zero' warning issued here */
}

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

LANG.ARITH.DIVZERO : Division By Zero

Summary

Properties

Example

Relevant Configuration File Parameters