[Bug c++/45385] New: -Wconversion fails to detect a real conversion loss

[mendola at gmail dot com]

Hi,
compiling the following code with -Wconversion doesn't give a warning while
with compiler version 4.3.2 does. As you can verify the posted code has a real
conversion loss at runtime giving:

expected: 8000000000
obtained: 3705032704


=================================================================
#include <iostream>

void foo(unsigned int a) { std::cout << "obtained: " << a << std::endl; }

class Test {
public:
  void eval() {
    foo(bar());
  }
private:
    unsigned long long bar() const {
      unsigned long long ret = 8000000000;
      std::cout << "expected: " << ret << std::endl;
      return ret;
    }
};

int main () {
    Test t;
    t.eval();

    return 1;
}
=================================================================


-- 
           Summary: -Wconversion fails to detect a real conversion loss
           Product: gcc
           Version: 4.4.3
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mendola at gmail dot com
 GCC build triplet: 4.4.3
  GCC host triplet: 4.4.3
GCC target triplet: 4.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45385