void print_int_nl(long long int i)
{
	printf("%lli\n", i);
}

================================

.globl main
main:
	pushq %rbp
	movq %rsp, %rbp
	movq $100, %rax
	pushq %rax
	call print_int_nl
	addq $8, %rsp
	movq $0, %rax
	leave
	ret

=================================

This prints "1", not "100".