[Bug c/89448] Failure to generate diagnostic for "complex int" (OK for "_Complex int")

[Keith.S.Thompson at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89448

--- Comment #6 from Keith Thompson <Keith.S.Thompson at gmail dot com> ---
Since Bug 91980 has been closed as a duplicate of this one, I'll
mention explicitly that another symptom of the bug is that this:

    #include <complex.h>
    complex x;
    // _Complex y;

produces no diagnostic.