[Bug ipa/71190] New: [7 Regression] ICE in assemble_variable_contents, at varasm.c:2054

["trippels at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71190

            Bug ID: 71190
           Summary: [7 Regression] ICE in assemble_variable_contents, at
                    varasm.c:2054
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: jamborm at gcc dot gnu.org
  Target Milestone: ---

Probably since the PR69708 fix went in, the final Firefox -flto libxul link
fails.

lto1: internal compiler error: in assemble_variable_contents, at varasm.c:2054
0x10ad35f3 assemble_variable_contents
        ../../gcc/gcc/varasm.c:2054
0x10ad3b0f output_object_block
        ../../gcc/gcc/varasm.c:7400
0x10ad3b0f output_object_blocks()
        ../../gcc/gcc/varasm.c:7460
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[6]: *** [/home/trippels/tmp/ccTKZtgV.ltrans56.ltrans.o] Error 1
make[6]: *** Waiting for unfinished jobs....
lto1: internal compiler error: in assemble_variable_contents, at varasm.c:2054
0x10ad35f3 assemble_variable_contents
        ../../gcc/gcc/varasm.c:2054
0x10ad3b0f output_object_block
        ../../gcc/gcc/varasm.c:7400
0x10ad3b0f output_object_blocks()
        ../../gcc/gcc/varasm.c:7460
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[6]: *** [/home/trippels/tmp/ccTKZtgV.ltrans43.ltrans.o] Error 1
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
/home/trippels/bin/ld: fatal error: lto-wrapper failed

I hope that someone comes up with a smaller testcase.
To reproduce build Firefox with -O3 -flto.