From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
 id DF52E385B805; Fri, 28 May 2021 05:49:15 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DF52E385B805
From: "gejoed at rediffmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug gcov-profile/100751] __gcov_dump and __gcov_reset usage
Date: Fri, 28 May 2021 05:49:15 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: gcov-profile
X-Bugzilla-Version: 8.3.1
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: gejoed at rediffmail dot com
X-Bugzilla-Status: RESOLVED
X-Bugzilla-Resolution: WORKSFORME
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: marxin at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: attachments.created
Message-ID: <bug-100751-4-3MLqfq1qFE@http.gcc.gnu.org/bugzilla/>
In-Reply-To: <bug-100751-4@http.gcc.gnu.org/bugzilla/>
References: <bug-100751-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
X-BeenThere: gcc-bugs@gcc.gnu.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Gcc-bugs mailing list <gcc-bugs.gcc.gnu.org>
List-Unsubscribe: <https://gcc.gnu.org/mailman/options/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=unsubscribe>
List-Archive: <https://gcc.gnu.org/pipermail/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-request@gcc.gnu.org?subject=help>
List-Subscribe: <https://gcc.gnu.org/mailman/listinfo/gcc-bugs>,
 <mailto:gcc-bugs-request@gcc.gnu.org?subject=subscribe>
X-List-Received-Date: Fri, 28 May 2021 05:49:16 -0000

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100751

--- Comment #16 from Gejoe <gejoed at rediffmail dot com> ---
Created attachment 50881
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50881&action=3Dedit
sample-prog.c edited to show __gcov_reset call.

The steps used for compiling and running the attached .c file are as follow=
s:
   gcc -v -save-temps  -fprofile-arcs -ftest-coverage sample-prog.c=20
   gcc   -fprofile-arcs -ftest-coverage sample-prog.o
   ./a.out=20

The output of a.out run is :
__gcov_dump() invoked!
__gcov_reset() invoked!
__gcov_dump() invoked!
__gcov_reset() invoked!

$ gcov sample-prog.c
sample-prog.c:source file is newer than notes file 'sample-prog.gcno'
(the message is displayed only once per source file)
File 'sample-prog.c'
Lines executed:83.33% of 18
Creating 'sample-prog.c.gcov'

$ cat sample-prog.c.gcov
        -:    0:Source:sample-prog.c
        -:    0:Graph:sample-prog.gcno
        -:    0:Data:sample-prog.gcda
        -:    0:Runs:2
        -:    0:Programs:1
        -:    0:Source is newer than graph
        -:    1:#include <stdio.h>
        -:    2:#include <ctype.h>
        -:    3:#include <unistd.h>
        -:    4:
        -:    5:extern void __gcov_reset(void);
        -:    6:extern void __gcov_flush(void);
        -:    7:extern void __gcov_dump( void);
        -:    8:
        2:    9:int main()
        -:   10:{
        -:   11:    unsigned char c;
        2:   12:    int count=3D0;
        2:   13:        c =3D 'g';
        -:   14:
        -:   15:        do {
        -:   16:=20=20=20
        -:   17:                if(c =3D=3D 'g'){
        -:   18:                        __gcov_dump();
       20:   19:                        printf("__gcov_dump() invoked!\n");
        4:   20:                        c =3D 'r';
    #####:   21:                }
    #####:   22:                else if(c =3D=3D 'r'){
        -:   23:                        __gcov_reset();
       16:   24:                        printf("__gcov_reset() invoked!\n");
    #####:   25:                        c =3D 'f';
        4:   26:                }
        4:   27:                if(count =3D=3D 2)
        -:   28:                        c =3D 'g';
       20:   29:                else if (count > 10)
        2:   30:                        c =3D 'e';
       18:   31:                count++;
        2:   32:        }while(c !=3D 'e');
       20:   33:=20=20=20=20
       20:   34:        return 0;
        -:   35:}=