Custom Config File & CPPCheck GUI

[Jocris Bitoon]

Hello,

I am trying to explore the possibility of extending the CPPCheck functionality for our code. Our code is in C and implements an embedded software. I actually have 2 questions:

1) I am trying to load a custom config file using the CPPCheck GUI using View -> Library Editor. My custom config file has this:

<def> <memory> <alloc>mm_malloc</alloc> <dealloc>mm_free</dealloc> </memory> </def>

When I try loading it, I see no change in the Library Editor window. Can I trust that I have been able to load the config file? How do I load a custom configuration file via the CPPCheck GUI?

2) My goal with my custom config file is to tell CPPCheck to check the calls for mm_malloc and mm_free and identify possible memory leak. Please note that mm_malloc does not call malloc() and mm_free does not call free() function of C. Our code manages our own memory. Is it possible to make CPPCheck do that?

[Daniel Marjamäki]

hello! sorry for late reply.

1) In the GUI, create a project. Put the cfg file in the same folder as the cppcheck project file. Now, in the project dialog in the GUI, you should see a checkbox where you can enable the cfg file.

2) yes your configuration should fix that.

If you put these 3 files in a empty folder:

1.cfg:

<def> <memory> <alloc>mm_malloc</alloc> <dealloc>mm_free</dealloc> </memory> </def>

1.c:

void f() {
    void *p = mm_malloc(10);
    /* forgot mm_free */
}

1.cppcheck:

<?xml version="1.0" encoding="UTF-8"?>
<project version="1">
    <libraries>
        <library>1</library>
    </libraries>
</project>

Then when you check "1.cppcheck" in the GUI you will see the memory leak.