<![CDATA[MISRA Discussion Forums - 8.22 Resources]]> https://forum.misra.org.uk/ Thu, 05 Nov 2026 13:03:31 +0000 MyBB <![CDATA[Rule 22.1: object declaration and deleted timing]]> https://forum.misra.org.uk/showthread.php?tid=1540 Mon, 04 May 2020 01:10:21 +0000 andy_su]]> https://forum.misra.org.uk/showthread.php?tid=1540 I need to declare an object in constructor and release it in deconstructor, because the object will be reused frequently, but it is not compliant on MISRA C 2012.
The sample code as below.
Could you give me any hint to solve it?
Thanks.

Code:
ABC::aa(const Arguments& args)
{
    pImpl = new ABC::impl(args);
}

ABC::~aa()
{
    delete pImpl;
    pImpl = NULL;
}
]]> I need to declare an object in constructor and release it in deconstructor, because the object will be reused frequently, but it is not compliant on MISRA C 2012.
The sample code as below.
Could you give me any hint to solve it?
Thanks.

Code:
ABC::aa(const Arguments& args)
{
    pImpl = new ABC::impl(args);
}

ABC::~aa()
{
    delete pImpl;
    pImpl = NULL;
}
]]> <![CDATA[Typo in rule 22.9]]> https://forum.misra.org.uk/showthread.php?tid=1484 Thu, 28 Mar 2019 15:49:42 +0000 gwd]]> https://forum.misra.org.uk/showthread.php?tid=1484 set to zero after calling an errno-setting-function" (emphasis mine). But the amplification, rationale, and exception all seem to deal with the testing of errno, not the setting of errno. The rule in Appendix A (on page 203) says, "..shall be tested against zero...", as does the version of the rule in the 2016 addendum. Seems like the text on page 190 probably needs to be fixed.]]> set to zero after calling an errno-setting-function" (emphasis mine). But the amplification, rationale, and exception all seem to deal with the testing of errno, not the setting of errno. The rule in Appendix A (on page 203) says, "..shall be tested against zero...", as does the version of the rule in the 2016 addendum. Seems like the text on page 190 probably needs to be fixed.]]> <![CDATA[Conditional stream opening and 22.3?]]> https://forum.misra.org.uk/showthread.php?tid=969 Fri, 12 Jul 2013 16:05:32 +0000 gs]]> https://forum.misra.org.uk/showthread.php?tid=969
Code:
if( someCondition )
    f = fopen( "apple", "r+" );
else
    f = fopen( "apple", "r" );
g = fopen( "apple", "r+" );
]]>
Code:
if( someCondition )
    f = fopen( "apple", "r+" );
else
    f = fopen( "apple", "r" );
g = fopen( "apple", "r+" );
]]>