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From: "dirkmoermans at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/53794] New: [c++11, accepts invalid] dangling reference accepted in nested structures with initializer lists
Date: Thu, 28 Jun 2012 09:35:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53794

             Bug #: 53794
           Summary: [c++11, accepts invalid] dangling reference accepted
                    in nested structures with initializer lists
    Classification: Unclassified
           Product: gcc
           Version: 4.6.3
            Status: UNCONFIRMED
          Severity: minor
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dirkmoermans@gmail.com


The code below is currently accepted without warning by gcc-4.6.3 and
gcc-4.7.0.

===
struct A
{
   int& i;
};

struct B
{
   A a;
};

int main()
{
   B b1{}; // BUG: accepts invalid
   // B b2; // rejected
};
===

I think it should be rejected, since uninitialized references are not allowed
by the language.