Hello GCC-Help
I'm trying to get code coverage with a sample code:
#include <iostream>
using namespace std;
class Base
{
public:
Base(){
cout << "Base Constructor Called\n";
}
virtual ~Base(){
cout << "Base Destructor called\n";
}
};
class Derived1: public Base
{
public:
Derived1(){
cout << "Derived constructor called\n";
}
~Derived1(){
cout << "Derived destructor called\n";
}
};
int main()
{
Derived1 *b = new Derived1();
delete b;
}
I tried to build and get code coverage with the following steps:
>> g++ -std=c++11 -fprofile-arcs -ftest-coverage -g test.cpp -o test
>> ./test
>> gcov -b -f test.cpp
And I got the test.cpp.gcov file,
-: 0:Source:test.cpp
-: 0:Graph:test.gcno
-: 0:Data:test.gcda
-: 0:Runs:1
-: 1:#include <iostream>
-: 2:using namespace std;
-: 3:
-: 4:class Base
-: 5:{
-: 6:public:
function _ZN4BaseC2Ev called 1 returned 100% blocks executed 100%
1: 7: Base(){
1: 8: cout << "Base Constructor Called\n";
call 0 returned 100%
1: 9: }
-: 10:
2*: 11: virtual ~Base(){
1: 12: cout << "Base Destructor called\n";
1*: 13: }
------------------
_ZN4BaseD0Ev:
function _ZN4BaseD0Ev called 0 returned 0% blocks executed 0%
#####: 11: virtual ~Base(){
-: 12: cout << "Base Destructor called\n";
#####: 13: }
call 0 never executed
call 1 never executed
------------------
_ZN4BaseD2Ev:
function _ZN4BaseD2Ev called 1 returned 100% blocks executed 100%
2: 11: virtual ~Base(){
1: 12: cout << "Base Destructor called\n";
call 0 returned 100%
1: 13: }
------------------
-: 14:};
-: 15:
-: 16:class Derived1: public Base
-: 17:{
-: 18:public:
function _ZN8Derived1C2Ev called 1 returned 100% blocks executed 80%
1: 19: Derived1(){
call 0 returned 100%
call 1 never executed
1: 20: cout << "Derived constructor called\n";
call 0 returned 100%
branch 1 taken 100% (fallthrough)
branch 2 taken 0% (throw)
1: 21: }
2: 22: ~Derived1(){
1: 23: cout << "Derived destructor called\n";
2: 24: }
------------------
_ZN8Derived1D0Ev:
function _ZN8Derived1D0Ev called 1 returned 100% blocks executed 100%
1: 22: ~Derived1(){
-: 23: cout << "Derived destructor called\n";
1: 24: }
call 0 returned 100%
call 1 returned 100%
------------------
_ZN8Derived1D2Ev:
function _ZN8Derived1D2Ev called 1 returned 100% blocks executed 100%
1: 22: ~Derived1(){
call 0 returned 100%
1: 23: cout << "Derived destructor called\n";
call 0 returned 100%
1: 24: }
------------------
-: 25:
-: 26:};
-: 27:
function main called 1 returned 100% blocks executed 88%
1: 28:int main()
-: 29:{
1: 30: Derived1 *b = new Derived1();
call 0 returned 100%
call 1 returned 100%
branch 2 taken 100% (fallthrough)
branch 3 taken 0% (throw)
call 4 never executed
1: 31: delete b;
branch 0 taken 100% (fallthrough)
branch 1 taken 0%
call 2 returned 100%
1: 32:}
but I don't understand why this line is uncovered:
function _ZN4BaseD0Ev called 0 returned 0% blocks executed 0%
#####: 11: virtual ~Base(){
-: 12: cout << "Base Destructor called\n";
#####: 13: }
Could this be a bug in G++/Gcov?
Version
g++ (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Please help me confirm the isssue ?
Thank you
Best regards,
Sy Nguyen
