LANG.STRUCT.BGOTO : Backwards goto

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CodeSonar^® 9.2p0

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C and C++

LANG.STRUCT.BGOTO : Backwards goto

Summary

A goto statement refers to a label that appears before the statement.

This class is a strict subset of Goto Statement.

Properties

Class Name

Backwards goto

Significance

style

Mnemonic

LANG.STRUCT.BGOTO

Categories

MisraC2025	MisraC2025:15.2	The goto statement shall jump to a label declared later in the same function
MisraC2023	MisraC2023:15.2	The goto statement shall jump to a label declared later in the same function
Misra2012	Misra2012:15.2	The goto statement shall jump to a label declared later in the same function
Misra2004	Misra2004:14.4	The goto statement shall not be used
AUTOSARC++14	AUTOSARC++14:M6-6-2	The goto statement shall jump to a label declared later in the same function body.
MisraC++2008	MisraC++2008:6-6-2	The goto statement shall jump to a label declared later in the same function body.
MisraC++2023	MisraC++2023:9.6.1	The goto statement should not be used
	MisraC++2023:9.6.3	The goto statement shall jump to a label declared later in the function body
JSF++	JSF++:189	The goto statement shall not be used.

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="Backwards goto"

Note that retaining the unnormalized ASTs will increase the disk space used to store the project representation, and may make the analysis take longer.

Example

int backwardsgoto(int i){
     int x=0;
 l1: x++;
     if (x >= i) goto l1;  /* 'Backwards Goto' warning issued here */
     return x;
}

Relevant Configuration File Parameters

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

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