[C++] __builtin_new vs operator new

[Jason Merrill]

>>>>> Benjamin Kosnik <bkoz@cygnus.com> writes:

 > Check this out:

 > void test03()
 > {
 >   using namespace std;

 >   bool test = false;
 >   (void) set_new_handler(NULL);
  
 >   try {
 >       void* p = operator new(INT_MAX);
 >   } 
 >   catch (bad_alloc& ba) {
 >     test = true;
 >   }
 > }

 > This does not exhibit standard-conformant behavior. I would expect
 > that operator new would be called, that attempts to allocate this
 > ammount of memory will fail, and as set_new_handler is set to NULL,
 > operator new would return std::bad_alloc.

Works for me.

 > This does not happen. In particular, operator new (from
 > gcc/cp/new1.cc), which looks correct, does not get called. 

 > 	call	__builtin_new <--------------here

Um, and just what do you think __builtin_new *is*?

Jason