[Bug go/81926] go/parse.o differs between stage2 and stage3 for gcc 7.2.0

["dclarke at blastwave dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81926

--- Comment #8 from Dennis Clarke <dclarke at blastwave dot org> ---
(In reply to Eric Botcazou from comment #7)
> See PR bootstrap/77995 for a similar issue on x86-64/Solaris.

Looks like a distant relation at best. That seemed to have something
to do with complex types and build_complex_type() requiring a second
"named" bool parameter. In the same ballpark perhaps but only as the
ballboy selling hot dogs watching the game. 

My bootstrap of 7.2.0 did complete fine and the testsuite is running. 
I think I shall circle back to 6.4.0 and try a bootstrap with "go" as
an enabled language after stage1 and see what happens. On sparc only.

I could try this on Solaris x86_64 but I don't have any of that around 
and have not seen it in the wild for some years.