[Bug c/92096] New: segmentation fault in 'example_labels' building gcc trunk on cygwin

[rogero at howzatt dot demon.co.uk]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92096

            Bug ID: 92096
           Summary: segmentation fault in 'example_labels' building gcc
                    trunk on cygwin
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rogero at howzatt dot demon.co.uk
  Target Milestone: ---

I using this invocation:

../gcc-trunk/configure --disable-bootstrap --enable-languages=c,c++
--enable-threads=posix --prefix=/usr/share/gcc-trunk

make then fails with:
...
In function ‘example_labels’:
cc1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[2]: *** [../../gcc-trunk/gcc/c/Make-lang.in:124: s-selftest-c] Error 1
make[2]: *** Waiting for unfinished jobs....
...

If I drill down:
$ cd gcc
$ make selftest
./xgcc -B./ -B/usr/share/gcc-trunk/x86_64-pc-cygwin/bin/ -isystem
/usr/share/gcc-trunk/x86_64-pc-cygwin/include -isystem
/usr/share/gcc-trunk/x86_64-pc-cygwin/sys-include
-L/cygdrive/c/Projects/gcc/build/gcc/../ld -xc -nostdinc /dev/null -S -o
/dev/null -fself-test=../../gcc-trunk/gcc/testsuite/selftests
In function ‘example_labels’:
cc1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make: *** [../../gcc-trunk/gcc/c/Make-lang.in:124: s-selftest-c] Error 1

Last clean build was svn revision 276847
First seg fault was svn revision 276902