struct foo
{

	foo()
	{
		__builtin_puts("hello\n");
	}
};
foo f{};

#include<iostream>

foo death{};

int main()
{
	__builtin_puts("before crashing\n");
	__builtin_printf("%p\n",std::cout.rdbuf());
	__builtin_puts("crashing\n");
}
Here is an example:

>g++ -o hw hw.cc -Ofast -s -I../include

>hw
hello

hello

before crashing

6156746547736C54
crashing

Using lld:

>g++ -o hw hw.cc -Ofast -s -I../include -fuse-ld=lld

>hw
hello

hello

before crashing

00007FFFA97A4C00
crashing

>g++ -o hw hw.cc -Ofast -s -I../include -static

D:\msys64\home\unlvs\projects\fast_io\.temp>hw
hello

hello

before crashing

00007FF62687E8C0
crashing


What happens here??