[Bug d/104749] [12 regression] stage1 d21 fails to link on Solaris/x86

[ibuclaw at gdcproject dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104749

--- Comment #6 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
Just having a look around, I couldn't see anywhere that `___s` would be created
now.

Then I came across r9-8460, which was fixed for 10.1.0, and backported before
9.4.0 was released.  Linked bug report is pr d/94240.

In that case then, earlier versions of version 9 might not work correctly.