Deleting an aliased pointer

Question

Doing this:

 union{
     int * integer;
     char * character;
 } u;
 u.integer = new int;
 delete u.character;

 u.integer = new int[5];
 delete [] u.character;

I assume this wouldn't work if any of these types have non trivial destructors, but is this ok?

Answer 1

This doesn't work in any case, if we assume work means having well-defined behavior rather than appearing to work (i.e. not crashing)