[Bug c++/20427] New: 'new int [2] ()' not default initialized

["andrew dot stubbs at st dot com" <gcc-bugzilla at gcc dot gnu dot org>]

According to my reading of ISO 14882 section 5.3.4 paragraph 15, arrays 
initialized with 'new' and a trailing '()' should be 'default-initialized'.

According to section 8.5 paragraph 5, the definition of 'default-initialized' 
for an array is that each entry in the array should be 'zero-initialized'.

This used to be the case in 3.2.2, but is not the case in 3.4.3.

The following program demonstrates the problem:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int
main()
{
  // dirty heap so that initialized data shows up
  char *string = (char *)malloc(sizeof"hello");
  strcpy (string, "hello");
  printf ("here: %s\n", string);
  free (string);

  // i[0] and i[1] should both be zero when the following
  // line contains () and something else whn it does not.
  int *i = new int [2] ();

  printf ("%p, %d, %d\n", i, i[0], i[1]);

  return 0;
}

-- 
           Summary: 'new int [2] ()' not default initialized
           Product: gcc
           Version: 3.4.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: andrew dot stubbs at st dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20427