LANG.FUNCS.TOOLONG : Function Too Long

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CodeSonar^® 9.2p0

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CodeSecure Inc

C and C++

LANG.FUNCS.TOOLONG : Function Too Long

Summary

The number of lines with code in a user-defined function exceeds the limit specified by the MAX_FUNCTION_LENGTH setting (which defaults to 60).

Properties

Class Name

Function Too Long

Significance

style

Mnemonic

LANG.FUNCS.TOOLONG

Categories

AUTOSARC++14	AUTOSARC++14:A1-4-1	Code metrics and their valid boundaries shall be defined and code shall comply with defined boundaries of code metrics.
CWE	CWE:710	Improper Adherence to Coding Standards
	CWE:1080	Source Code File with Excessive Number of Lines of Code
JSF++	JSF++:1	Any one function (or method) will contain no more than 200 logical source lines of code (L-SLOCs).
POW10	POW10:4	Limit functions to no more than 60 lines of text.
JPL	JPL:25	Use short functions with a limited number of parameters.

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="Function Too Long"

Example

The following example will not trigger a warning of this class with the factory setting of MAX_FUNCTION_LENGTH, but will trigger a warning with MAX_FUNCTION_LENGTH=10 or lower.

int longfunc(int i){ /* 'Function Too Long' warning issued here
                      * when MAX_FUNCTION_LENGTH=10 (or lower) */
  int rv = i;
  rv += 1;
  rv += 2;
  rv += 3;
  rv += 4;
  rv += 5;
  rv += 6;
  rv += 7;
  return rv;
}

Relevant Configuration File Parameters

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

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