MATH.RANGE.GAMMA : ガンマ関数の引数が0

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CodeSonar^® 9.2p0

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MATH.RANGE.GAMMA : ガンマ関数の引数が0

要旨

プロパティ

MisraC2025

MisraC2025:D.4.1

Run-time failures shall be minimized

MisraC2025:D.4.11

The validity of values passed to library functions shall be checked

MisraC2023

MisraC2023:D.4.1

Run-time failures shall be minimized

MisraC2023:D.4.11

The validity of values passed to library functions shall be checked

Misra2012

Misra2012:D.4.1

Run-time failures shall be minimized

Misra2012:D.4.11

The validity of values passed to library functions shall be checked

Misra2004

Misra2004:20.3

The validity of values passed to library functions shall be checked

AUTOSARC++14

AUTOSARC++14:A0-4-4

Range, domain and pole errors shall be checked when using math functions.

CWE

CWE:628

Function Call with Incorrectly Specified Arguments

CWE:687

Function Call With Incorrectly Specified Argument Value

CWE:688

Function Call With Incorrect Variable or Reference as Argument

CERT-C

CERT-C:FLP32-C

Prevent or detect domain and range errors in math functions

CERT-C:MSC23-C

Beware of vendor-specific library and language differences

Insecure design

Insecure Design

CodeSonar ships with library models that allow it to functions such as libm gamma() that compute a gamma value. If one of these functions is called with zero in the input parameter position, a warning will be issued.

If you have created a custom library model for some function f() in terms of one of these existing models, calls to f() will also be capable of triggering Gamma on Zero warnings.

例

#include <math.h>

double use_gamma(double ind){
    double a = tgamma(0);    /* 'Gamma on Zero' warning issued here */
    double b = tgamma(1);                  /* ok */    
    double c = tgamma(ind);  /* EVIDENCED ONLY: 'Gamma on Zero' warning issued here
                              * if CodeSonar has evidence that zero is passed to use_gamma(). */
    return a+b+c;
}

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