[Bug go/77910] [7 Regression] go: open zversion.go: no such file or directory

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77910

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-10-10
     Ever confirmed|0                           |1

--- Comment #5 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r240083:

commit 91d733e1ca11bfb60afa7191b1fba12cc4966f76
Author: ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Sun Sep 11 13:23:27 2016 +0000

        runtime/internal/sys: new package, API copied from Go 1.7

        Copy over the Go 1.7 runtime/internal/sys package, but instead of
having
        separate files for each GOARCH and GOOS value, set the values in
        configure.ac and write them out in Makefile.am.  Setting the values in
        configure.ac should make it easier to add new processors.

        Remove the automake GOARCH conditionals, which are no longer used.
        Leave the GOOS conditionals for now, as they are used for the C runtime
        package.

I've reproduced the issue on a second machine to rule out a pilot error.

BTW bisecting go is slow, because one has to build from scratch on every
iteration (one gets build errors otherwise). For the rest of gcc rebuilding
in an existing build directory works >99% of the time...