[Bug gcov-profile/96267] New: gcov-tool merge more coverage data error.

[dongjianqiang2 at huawei dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96267

            Bug ID: 96267
           Summary: gcov-tool merge more coverage data error.
           Product: gcc
           Version: 7.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: gcov-profile
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dongjianqiang2 at huawei dot com
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Created attachment 48907
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48907&action=edit
gcda files

Hi, I use a cross compiler using a cross compiler (--build=x86_64-suse-linux
--host=x86_64-suse-linux --target=aarch64_be-linux-gnu) gcov-tool to merge tree
profiles generated by big endian machine. 
gcov-tool merge dir1 dir2 -o dir12
gcov-tool merge dir3 dir12 -o dir123

I am confronted with "./main.gcda:incorrect gcov version xxxxxx vs yyyyyyy"
error.

known to fail on all active branches.