https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48463
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Example of template instantiation:
$ cat test.cpp
template<class T>
class Foo
{
public:
Foo()
{
b = 123;
}
void test() { b = 111; }
private:
int b;
};
template class Foo<float>;
template class Foo<int>;
int main()
{
Foo<int> xx;
xx.test();
return 0;
}
$ cat test.cpp.gcov:
-: 1:template<class T>
-: 2:class Foo
-: 3:{
-: 4: public:
1: 5: Foo()
-: 6: {
1: 7: b = 123;
1: 8: }
-: 9:
1: 10: void test() { b = 111; }
-: 11:
-: 12: private:
-: 13: int b;
-: 14:};
-: 15:
-: 16:template class Foo<float>;
-: 17:template class Foo<int>;
-: 18:
1: 19:int main()
-: 20:{
1: 21: Foo<int> xx;
1: 22: xx.test();
-: 23:
1: 24: return 0;
-: 25:}
However LLVM does:
/home/marxin/Programming/testcases/gcov-problems/test.cpp:
1| |template<class T>
2| |class Foo
3| |{
4| | public:
5| | Foo()
6| 1| {
7| 1| b = 123;
8| 1| }
------------------
| Unexecuted instantiation: _ZN3FooIfEC2Ev
------------------
| _ZN3FooIiEC2Ev:
| 6| 1| {
| 7| 1| b = 123;
| 8| 1| }
------------------
9| |
10| 1| void test() { b = 111; }
------------------
| Unexecuted instantiation: _ZN3FooIfE4testEv
------------------
| _ZN3FooIiE4testEv:
| 10| 1| void test() { b = 111; }
------------------
11| |
12| | private:
13| | int b;
14| |};
15| |
16| |template class Foo<float>;
17| |template class Foo<int>;
18| |
19| |int main()
20| 1|{
21| 1| Foo<int> xx;
22| 1| xx.test();
23| 1|
24| 1| return 0;
25| 1|}
Which is more precise.
