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From: "gejoed at rediffmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug gcov-profile/100751] __gcov_dump and __gcov_reset usage
Date: Tue, 25 May 2021 10:57:13 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100751

--- Comment #4 from Gejoe <gejoed at rediffmail dot com> ---
(In reply to Martin Li=C5=A1ka from comment #3)
> > For the second time and then onwards, __gcov_dump() invocation (by givi=
ng
> > 'g' character during the a.out run) doesn't happen.
>=20
> Yes, one can call __gcov_dump only once per run.

So, I understand that __gcov_dump could be used only after doing all the
testing with the application ,i.e- towards the end to get the profile/cover=
age
info. Am I right?


> > Another thing is  that, __gcov_reset() also doesn't appear to work. I t=
ried
> > giving the character 'r' during the run of the program but couldn't see=
 the
> > counters getting reset to 0 in the sample-prog.gcov file. The previous
> > values of lines covered were there.
>=20
> No, __gcov_reset resets run-time counters (profile collected so far during
> an application run). If you want to clear profile, then simply remove .gc=
da
> files.

Resetting run-time counters - does that mean it would not get reflected in
.gcda files or the .c.gcov file contents created by gcov (assuming that the
application a.out is still on run )?=