Re: new(nothrow not even from constructor)

   I've been looking through the Dinkumware reference manual and I
can't find a form of "new" that doesn't throw any exceptions at all.

   I'm currently writing a program that uses the "new" operator to
do stuff like create thread objects and window objects. If a thread
object or window object can't be created, my program displays a
message box, something like "Creation of the Help dialog box
failed". Ideally it would be:

   Thread *const p = new(std::nothrow) Thread(my_entry_function,
JOINABLE);

   if (!p)
   {
       wxMessageBox("Can't create thread");
       return;
   }

The problem with this however, is that don't want any exceptions at
all to be thrown by the "new" operator. For instance, the following
"Hello World" program doesn't work:

#include <new>
#include <iostream>

class MyClass {
public:

   MyClass()
   {
       throw 5;
   }
};

int main()
{
   MyClass *p = new(std::nothrow) MyClass();

   std::cout << "Hello World!\n";
}

The "nothrow" only stops "new" from throwing a "bad_alloc" if the
memory allocation fails -- it doesn't suppress exceptions thrown
from the constructor of the object. (Or at least that's the GNU C++
behaviour).

Is the following my only option?

int main()
{
   MyClass *p;

   try { p = new MyClass(); } catch(...) { p = 0; }

   std::cout << "Hello World!\n";
}