ostrstream question

From: becte (henrik_gustafsson_at_hotmail.com)
Date: 10/29/04 

Date: 29 Oct 2004 08:44:43 -0700

I encountered the following code similar to this
// some header files
static char* func(int i)
{
 ostrstream out;

 if (i==1) out << "ABCDE";
 else if (i==2) out << "123";
 else cout << "";

 return out.str();
}

int main ()
{
  static char *p1 = NULL, *p2 = NULL;
  p1 = func(1);
  p2 = func(2);
  printf ("String1 = %s, String2 = %s\n", p1, p2);
  return 0;
}
The desired out put is "String1 = ABCDE, String2 = 123".
New if I used an character array, char out[10], and returning &out[0]
instead of ostrstream this would definitly be illegal.
But this looks illegal too, I suppose ostrstream has some destructor
that deletes any allocated memory. What is confusing is that this
happens to work when i try it. Is this legal after all?

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