[Bug c++/118722] accepted undefined static integral data member

[daniel.kruegler at googlemail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118722

Daniel Krügler <daniel.kruegler at googlemail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |daniel.kruegler@googlemail.
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--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
Your program does not require the definition of T::x to exist, because the
selected operator<< takes an int, not some reference to it. If you change your
program to something like this, a definition is required:

struct T{
    static const int x = 1;
};

const int *p = &T::x;

int main (){ 
    return *p;
}