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From: "dongjianqiang2 at huawei dot com" <gcc-bugzilla@gcc.gnu.org>
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Date: Tue, 26 May 2020 12:27:19 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95332

            Bug ID: 95332
           Summary: gcov-tool merge=EF=BC=9A"not a gcov data file"
           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 48605
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D48605&action=3Dedit
a patch for gcov-tool.

when I invoke gcov-tool merge dir1 dir2 where dir1 and dir2 are the directo=
ries
containing the .gcda files which I intend to combine, I am confronted with
"./test.gcda:not a gcov data file" errors for each file in dir1. After stud=
ying
the libgcov code, I have figured out it's an endianness issue. I'm using a
cross compiler --build=3Dx86_64-suse-linux --host=3Dx86_64-suse-linux
--target=3Daarch64_be-linux-gnu, gcov-tool cannot merge the coverage data
generated by big endian machine. here is patch to fix it. pls review.=