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Invalid preprocessing token

Hi there,

In attempting to get a warning free build (Using 10.2.2),
I've come across something like the following in a cpp file:

#define memberFuncPointer(func) &X:: ## func
memberFuncPointer(memberFun)

If I run cpp over this snippet, I get a warning:

warning: pasting "::" and "memberFun" does not give a valid
preprocessing token

Are there any reasons why I should not replace
the macro definition with:

#define memberFuncPointer(func) &X::func

which is warning free? I can't think of any off the top of my
head, but don't want to mistakenly break something through
ignorance...

Thanks in advance,
Rob.



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