[Bug c++/18770] New: g++ accepts invalid code

["seefeld at sympatico dot ca" <gcc-bugzilla at gcc dot gnu dot org>]

According to ISO/IEC 14882 6.4-3, the following snippet is ill-formed:

if (int x = 1)
{
  int x = 2; // redeclaration of x
}

Yet the g++ versions that come with Fedora Core 3 accept it.
Specifically, these versions are:

gcc version 3.3.4 20040817 (Red Hat Linux 3.3.4-2)
gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)
gcc version 4.0.0 20041019 (Red Hat 4.0.0-0.8)

-- 
           Summary: g++ accepts invalid code
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: seefeld at sympatico dot ca
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: GNU/Linux x86
  GCC host triplet: GNU/Linux x86
GCC target triplet: GNU/Linux x86


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18770