[Bug middle-end/66685] New: [6 Regression] conftest.c:16:1: internal compiler error: in as_a, at is-a.h:192

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66685

            Bug ID: 66685
           Summary: [6 Regression] conftest.c:16:1: internal compiler
                    error: in as_a, at is-a.h:192
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: danglin at gcc dot gnu.org
  Target Milestone: ---
              Host: hppa2.0w-hp-hpux11.11
            Target: hppa2.0w-hp-hpux11.11
             Build: hppa2.0w-hp-hpux11.11

checking for hppa2.0w-hp-hpux11.11-gcc... /test/gnu/gcc/objdir/./gcc/xgcc
-B/test/gnu/gcc/objdir/./gcc/ -B/opt/gnu/gcc/gcc-6.0/hppa2.0w-hp-hpux11.11/bin/
-B/opt/gnu/gcc/gcc-6.0/hppa2.0w-hp-hpux11.11/lib/ -isystem
/opt/gnu/gcc/gcc-6.0/hppa2.0w-hp-hpux11.11/include -isystem
/opt/gnu/gcc/gcc-6.0/hppa2.0w-hp-hpux11.11/sys-include
checking for suffix of object files... configure: error: in
`/test/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/libgcc':
configure: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details.
make[2]: *** [configure-stage1-target-libgcc] Error 1

config.log:
configure:3462: /test/gnu/gcc/objdir/./gcc/xgcc -B/test/gnu/gcc/objdir/./gcc/
-B
/opt/gnu/gcc/gcc-6.0/hppa2.0w-hp-hpux11.11/bin/
-B/opt/gnu/gcc/gcc-6.0/hppa2.0w-
hp-hpux11.11/lib/ -isystem /opt/gnu/gcc/gcc-6.0/hppa2.0w-hp-hpux11.11/include
-i
system /opt/gnu/gcc/gcc-6.0/hppa2.0w-hp-hpux11.11/sys-include    -o conftest -g
-O2   conftest.c  >&5
conftest.c: In function 'main':
conftest.c:16:1: internal compiler error: in as_a, at is-a.h:192
 }
 ^

This is with reviosn 225078.