On 5/24/21 1:44 PM, Gejoe Daniel via Gcc wrote:
Adding gcc mailing list for the clarification.
Thank you team !
From: "Gejoe Daniel"<gej...@rediffmail.com>
Sent: Mon, 24 May 2021 15:02:12
To: "gcc-h...@gcc.gnu.org"<gcc-h...@gcc.gnu.org>
Subject: Re: Regarding __gcov_dump and __gcov_reset usage
Hi team,
Any info/reply ?
Thanking you in advance,
Gejoe
From: "Gejoe Daniel"<gej...@rediffmail.com>
Sent: Sun, 16 May 2021 17:37:46
To: <gcc-h...@gcc.gnu.org>
Subject: Regarding __gcov_dump and __gcov_reset usage
Hi team,
I did go through the online manual of gcc gcov on __gcov_dump() and
__gcov_reset() :
https://gcc.gnu.org/onlinedocs/gcc/Gcov-and-Optimization.html#Gcov-and-Optimization
I tried out using the functions in a sample program (sample-prog.c) that is
attached here.
The steps followed were :
(1) gcc -fprofile-arcs -ftest-coverage sample-prog.c
(2) ./a.out
(3) gcov sample-prog.c
While running a.out, when I give character 'g', the __gcov_dump() must
be invoked.
What I could observe is that first time __gcov_dump() is invoked , the
sample-prog.gcda file gets created.
For the second time and then onwards, __gcov_dump() invocation (by giving
'g' character during the a.out run) doesn't happen.
This is concluded by looking at the time stamp of sample-prog.gcda file in the
same folder. It was still having the same time stamp of first time invocation
of __gcov_dump().
Another thing is that, __gcov_reset() also doesn't appear to work. I tried 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.
Let me know if my approach is correct or if I miss any information here.
Thanks,
Gejoe
Hello.
Can you please create bug at: https://gcc.gnu.org/bugzilla/
Please upload there a test-case and series of commands executed and the
expected result.
Thank you,
Martin
