[CMake] Problems with WriteCompilerDetectionHeader and cxx_nullptr

[Roman Wüger]

Hello,

 

i tried to use the generated compiler detection header but get an error if I
use the cxx_nullptr feature on a compiler which doesn’t support C++11.

 

void doSomething(int n, bool *ok = 0) {

    if (ok)

        *ok = true;

 

    if (n != 0) {

        if (ok)

            *ok = false;

    }

}

 

This simple example produces the following error on Mac OS:

error: cannot initialize a parameter of type 'bool *' with an rvalue of type
'void *'

void doSomething(int n = 1, bool *ok = static_cast<void*>(0)) {   

                                  ^    ~~~~~~~~~~~~~~~~~~~~~

 

However, if C++11 could be used then the „nullptr“ is working fine.

Couldn‘t „static_cast<void*>(0)“ simply be replaced with „0“?

 

Best Regards

 

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