[Bug c++/63789] g++ -m32 on solaris has trouble finding abs with int64_t

[richard at netbsd dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63789

--- Comment #1 from Richard PALO <richard at netbsd dot org> ---
I should mention that rendering the test program pure c++ by replacing the
first two lines with:
>#include <cstdlib>
>#include <cmath>
allows the snippet build with both -m32 and -m64.
It should be able to build as is, though.