[Bug c/30343] New: False positive: allocating zero-element array

["gjasny at web dot de" <gcc-bugzilla at gcc dot gnu dot org>]

Hi,

The following code produces a false positive warning "allocating zero-element
array".

template <class T, int size = 0> class Array
{
public:
  Array() {
    if (size) {
      new T[size];
    }
  }
};

void foo() {
  Array<int> bar;
}

the new command is guarded by a if(size). So allocating a zero size array is
impossible. It would be really nice if gcc could check for this condition,
also.

Thanks,
Gregor


-- 
           Summary: False positive: allocating zero-element array
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gjasny at web dot de
 GCC build triplet: gcc version 4.2.0 20061217 (prerelease) (Debian 4.2-
                    20061217-1)
  GCC host triplet: i486-linux-gnu
GCC target triplet: i486-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30343