[Bug c++/38232] New: "value-initialization of reference" warning too strict

[cgd at google dot com]

"gcc version 4.4.0 20081123 (experimental) (GCC)" rejects the code:

class base {
 public:
  base();
  virtual ~base();

 private:
  int& int_ref;  // initialized by base ctor, not visible here
};

class derived : public base {
};

base *make_derived() {
  return new derived();
}

with the error:

test.cc: In function 'base* make_derived()':
test.cc:14: error: value-initialization of reference

4.3.2 accepts this code, the Comeau test drive accepts it, and AFAICT there's
nothing wrong with it.

Adding a user-supplied default ctor to 'derived' fixes it.


This was build from a GCC trunk checkout as of this evening:

Using built-in specs.
Target: i686-linux
Configured with: ../trunk/configure --enable-languages=c,c++ --build=i686-linux
--host=i686-linux --target=i686-linux
--prefix=/g/users/cgd/proj/gcc-trunk/bld/../inst
Thread model: posix
gcc version 4.4.0 20081123 (experimental) (GCC)


-- 
           Summary: "value-initialization of reference" warning too strict
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: cgd at google dot com
 GCC build triplet: i686-linux
  GCC host triplet: i686-linux
GCC target triplet: i686-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38232