[Bug gcov-profile/85871] g++.dg/gcov/gcov-8.C random failures

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85871

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Christophe Lyon from comment #2)
> Yes I had spotted this part of gcov.exp, but saw nothing in the logs.
> 
> As I put in the title, it happens randomly, and this is automated testing.
> 
> And it seems there is no way increasing verbosity will print helpful debug
> info in  this area.
> 
> I hoped someone more knowledgeable would have an idea of what could cause
> such an error :)
> 
> 
> It could be that the process was killed for some reason, but there is no
> such clue in the logs. Maybe HJ Lu has some info since I noticed similar
> errors in his reports.

Could you reproduce that with repeatedly executed:
$ make check RUNTESTFLAGS="gcov.exp=gcov-6.C"

or

$ make check -k -j8 RUNTESTFLAGS="gcov.exp"

If yes, then debugging should be much easier. What exactly target do you test.
Is it i686?