https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61935
Bug ID: 61935
Summary: Missing "unused variable" warning in 4.9 but it was in
g++ 4.8
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: galdralag at bk dot ru
In following code (g++ -Wall test.cpp) variable rrr is unused but no warnings
printed.
If I remove destructor in class A then warning occurs.
In g++ 4.8 warning occurs always
//////////////////////////////////////////////////
#include <iostream>
class A
{
public:
int a;
virtual ~A(){}
};
class B : public A
{
public:
int b;
};
void test(A* a)
{
B& rrr = *static_cast<B*>(a);
std::cout << "test\n";
}
int main()
{
B bb;
test(&bb);
return 0;
}
//////////////////////////////////////////////////
