gcc/testsuite/g++.old-deja/g++.brendan/crash60.C

// { dg-do assemble  }
// GROUPS passed old-abort
class X
{
public:
    X ();
    int	f[4];
};

// Note that we mistakenly initialize the array data member as if it
// was scalar
X::X () : f (0) {}// { dg-error "" "" { target { ! c++20 } } }