#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ system(char *);
void iptables_set() {
  system("iptables -P FORWARD DROP");
  system("iptables -F FORWARD");
  system("iptables -I FORWARD -j ACCEPT");
  system("iptables -I FORWARD -j DROP");
  system("iptables -A FORWARD -j DROP");
  system("iptables -D FORWARD 1");
}


x86 assembly (clang, -O0):
<iptables_set>:
push   %rbp
mov    %rsp,%rbp
lea    0xee5(%rip),%rdi
call   1030 <system@plt>
lea    0xef2(%rip),%rdi
call   1030 <system@plt>
lea    0xefa(%rip),%rdi
call   1030 <system@plt>
lea    0xf0c(%rip),%rdi
call   1030 <system@plt>
lea    0xf1c(%rip),%rdi
call   1030 <system@plt>
lea    0xf2c(%rip),%rdi
call   1030 <system@plt>
pop    %rbp
ret

x86 assembly (clang, -O2):
<iptables_set>:
push   %rax
lea    0xee8(%rip),%rdi
call   1030 <system@plt>
lea    0xef5(%rip),%rdi
call   1030 <system@plt>
lea    0xefd(%rip),%rdi
call   1030 <system@plt>
lea    0xf0f(%rip),%rdi
call   1030 <system@plt>
lea    0xf1f(%rip),%rdi
call   1030 <system@plt>
lea    0xf2f(%rip),%rdi
pop    %rax
jmp    1030 <system@plt>

LLVM IR (-O0):
@.str = [25 x i8] c"iptables -P FORWARD DROP\00"
@.str.1 = [20 x i8] c"iptables -F FORWARD\00"
@.str.2 = [30 x i8] c"iptables -I FORWARD -j ACCEPT\00"
@.str.3 = [28 x i8] c"iptables -I FORWARD -j DROP\00"
@.str.4 = [28 x i8] c"iptables -A FORWARD -j DROP\00"
@.str.5 = [22 x i8] c"iptables -D FORWARD 1\00"
define void @iptables_set() {
%1 = call i32 @system(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%2 = call i32 @system(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0))
%3 = call i32 @system(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @system(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.3, i64 0, i64 0))
%5 = call i32 @system(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.4, i64 0, i64 0))
%6 = call i32 @system(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.5, i64 0, i64 0))
ret void
}

LLVM IR (-O2):
@.str = [25 x i8] c"iptables -P FORWARD DROP\00"
@.str.1 = [20 x i8] c"iptables -F FORWARD\00"
@.str.2 = [30 x i8] c"iptables -I FORWARD -j ACCEPT\00"
@.str.3 = [28 x i8] c"iptables -I FORWARD -j DROP\00"
@.str.4 = [28 x i8] c"iptables -A FORWARD -j DROP\00"
@.str.5 = [22 x i8] c"iptables -D FORWARD 1\00"
define void @iptables_set() {
%1 = tail call i32 @system(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str, i64 0, i64 0))
%2 = tail call i32 @system(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.1, i64 0, i64 0))
%3 = tail call i32 @system(i8* getelementptr inbounds ([30 x i8], [30 x i8]* @.str.2, i64 0, i64 0))
%4 = tail call i32 @system(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.3, i64 0, i64 0))
%5 = tail call i32 @system(i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str.4, i64 0, i64 0))
%6 = tail call i32 @system(i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str.5, i64 0, i64 0))
ret void
}