c++/7536: C++ front end does not warn of promotion of negative ints to unsigneds

[bangerth@dealii.org]

Synopsis: C++ front end does not warn of promotion of negative ints to unsigneds

State-Changed-From-To: analyzed->closed
State-Changed-By: bangerth
State-Changed-When: Fri Nov 22 07:42:40 2002
State-Changed-Why:
    Following Gaby's suggestion, I checked what the C front end
    does in this case (nothing), so let's keep the C++ front
    end consistent with that and do nothing as well. Thus close
    this report.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7536