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CodeSonar® 9.2p0 CONFIDENTIAL CodeSecure Inc
C and C++

LANG.STRUCT.LOOP.RRBFLI : Risky Range-based for-loop Initializer

Summary

FIXME

Properties

Class Name Risky Range-based for-loop Initializer
Significance reliability
Mnemonic LANG.STRUCT.LOOP.RRBFLI
Categories
MisraC++2023 MisraC++2023:9.5.2 A for-range-initializer shall contain at most one function call
Availability Available for C++ only (not 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="Risky Range-based for-loop Initializer"
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 

#include <string>
#include <vector>

typedef std::vector< std::string > VoS;

extern VoS make( const std::string & s );

void Bad( const std::string & s )
{
    for ( auto c : make( s ).at( 0 ) )  // 'Risky Range-based for-loop Initializer' warning issued here
    {
    }
}

void Good( const std::string & s )
{
    auto range = make( s ).at( 0 );
    for ( auto c : range )              // OK
    {
    }
}

Relevant Configuration File Parameters

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

 

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