[Bug c++/23491] New: new declarator with constant expression gives "error: invalid use of array with unspecified bounds"

["redi at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

$ cat init.cc ; g++4x init.cc ; g++4x -v
struct X
    {
    int m;
    };

void f(int n)
    {
    const X *p = new const X[1] () ;
    }
init.cc: In function ?void f(int)?:
init.cc:8: error: invalid use of array with unspecified bounds
init.cc:8: error: invalid use of array with unspecified bounds
init.cc:8: error: invalid use of array with unspecified bounds
init.cc:8: error: invalid use of array with unspecified bounds
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.x/configure --prefix=/home/redi/gcc/4.x
--enable-languages=c,c++ --with-system-zlib --enable-threads=posix
--enable-__cxa_atexit --disable-checking --enable-concept-checks --enable-pch
--enable-libstdcxx-debug
Thread model: posix
gcc version 4.1.0 20050819 (experimental)

The error is only given if the array length is a positive constant expression.
Negative or zero constant expressions and non-constant expressions don't trigger
the error.  The error is not given if X has no member, or if an array of ints is
created instead of an array of X.

-- 
           Summary: new declarator with constant expression gives "error:
                    invalid use of array with unspecified bounds"
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: redi at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23491