https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63831
--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to emsr from comment #4)
> Can someone quick try that?
Yes. It doesn't work.
trippels@gcc2-power8 test % /home/trippels/gcc_test/usr/local/bin/g++ -I ./ -MM
test.cpp
./1.h:5:6: error: missing binary operator before token "("
#if __has_attribute(alloc_size)
^
