[Bug c++/11554] New: Warning about reordering of initializers doesn't mention location of constructor

[bangerth at dealii dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11554

           Summary: Warning about reordering of initializers doesn't mention
                    location of constructor
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Keywords: diagnostic
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bangerth at dealii dot org
                CC: gcc-bugs at gcc dot gnu dot org,gdr at gcc dot gnu dot
                    org

When one accidentally orders initializers of member variables in another
order than the one they appear in the class declaration, one gets a
warning about this. However, this warning doesn't state where the
problem is:
------------------------------------
struct Y {
    Y ();
    int i1, i2;
};

Y::Y () : i2(0), i1(0) {}
------------------------------------
parameter-estimation/me-uncertainty> c++ -Wall -c x.cc
x.cc: In constructor `Y::Y()':
x.cc:3: warning: `Y::i2' will be initialized after
x.cc:3: warning:   `int Y::i1'

So this gives the location where i1 and i2 are _declared_, but it doesn't
show where the problem really is, namely in the _definition_ of the
constructor, or more exactly: in its member initializer list, which would
be in line 6. This can become a little confusing if one has a class with
more than one constructor.

W.