[Bug bootstrap/77593] [7 Regression] Bootstrap failure with configure-target-libgfortran " cygwin64 Windows 10 anniversary

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77593

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-unknown-cygwin
                 CC|                            |tkoenig at gcc dot gnu.org
          Component|fortran                     |bootstrap
               Host|                            |x86_64-unknown-cygwin
   Target Milestone|---                         |7.0
            Summary|configure-target-libgfortra |[7 Regression] Bootstrap
                   |n " cygwin64 Windows 10     |failure with
                   |anniversary                 |configure-target-libgfortra
                   |                            |n " cygwin64 Windows 10
                   |                            |anniversary

--- Comment #1 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Error message (from the logfile):

configure:15660: checking whether the GNU Fortran compiler is working
configure:15673: /cygdrive/c/Users/tim/gnu/gcc/cyg64/./gcc/gfortran
-B/cygdrive/c/Users/tim/gnu/gcc/cyg64/./gcc/
-B/usr/local/gcc7/x86_64-unknown-cygwin/bin/
-B/usr/local/gcc7/x86_64-unknown-cygwin/lib/ -isystem
/usr/local/gcc7/x86_64-unknown-cygwin/include -isystem
/usr/local/gcc7/x86_64-unknown-cygwin/sys-include    -c   conftest.f >&5
Cygwin runtime failure: /cygdrive/c/Users/tim/gnu/gcc/cyg64/gcc/f951.exe:
Invalid relocation.  Offset 0x2feaf09a3 at address 0x1004b8179 doesn't fit into
32 bits
configure:15673: $? = 1
configure: failed program was:
| 
|       program foo
|       real, parameter :: bar = sin (12.34 / 2.5)
|       end program foo
configure:15677: result: no
configure:15679: error: GNU Fortran is not working; please report a bug in
http://gcc.gnu.org/bugzilla, attaching
/cygdrive/c/Users/tim/gnu/gcc/cyg64/x86_64-unknown-cygwin/libgfortran/config.log