GCC Bugzilla Bug 4417

-freestanding will, under some conditions, generate a call to 
memcpy behind the back of the user.  This defeats the point of 
that flag

Release:
3.0.1

Environment:
Any IA32 target, from what I can tell.

How-To-Repeat:
typedef struct foo{
        char blah[1024];
} foo_t;
 
extern foo_t one, two;
 
void
foo(void)
{
        one = two;
}


$ cc -ffreestanding -O3 -S -o - a.c | grep memcpy
        call    memcpy

State-Changed-From-To: open->closed
State-Changed-Why: We've documented which functions libc must provide, and 
    memcpy is among them.