#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 */
typedef int socklen_t;
typedef int /*<<< orphan*/ optval;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int EXIT_FAILURE;
int EXIT_SUCCESS;
int /*<<< orphan*/ IPPROTO_UDP;
int /*<<< orphan*/ SOCK_DGRAM;
int /*<<< orphan*/ SOL_SOCKET;
int /*<<< orphan*/ SO_REUSEADDR;
int /*<<< orphan*/ errno;
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
scalar_t__ getsockopt(int, int /*<<< orphan*/, int /*<<< orphan*/, int *,
                      int *);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ stderr;
char *strerror(int /*<<< orphan*/);
int main(void) {
  int sock;
  if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0) {
    fprintf(stderr, "socket() failed: %s\n.", strerror(errno));
    return (EXIT_FAILURE);
  }
  int optval;
  socklen_t optlen = sizeof(optval);
  if (getsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &optval, &optlen) < 0) {
    fprintf(stderr, "getsockopt() failed: %s\n.", strerror(errno));
    return (EXIT_FAILURE);
  }
  return (EXIT_SUCCESS);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    0x2e8a(%rip),%rax
mov    (%rax),%edi
mov    0x2e79(%rip),%rax
mov    (%rax),%esi
mov    0x2e30(%rip),%rax
mov    (%rax),%edx
call   1060 <socket@plt>
mov    %eax,-0x8(%rbp)
cmp    $0x0,%eax
jge    11b8 <main+0x78>
mov    0x2e46(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x14(%rbp)
mov    0x2e32(%rip),%rax
mov    (%rax),%edi
call   1050 <strerror@plt>
mov    -0x14(%rbp),%edi
mov    %rax,%rdx
lea    0xe5e(%rip),%rsi
call   1040 <fprintf@plt>
mov    0x2e0a(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
jmp    1234 <main+0xf4>
movl   $0x4,-0x10(%rbp)
mov    -0x8(%rbp),%edi
mov    0x2e1f(%rip),%rax
mov    (%rax),%esi
mov    0x2dd6(%rip),%rax
mov    (%rax),%edx
lea    -0xc(%rbp),%rcx
lea    -0x10(%rbp),%r8
call   1030 <getsockopt@plt>
cmp    $0x0,%rax
jge    1228 <main+0xe8>
mov    0x2dd6(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x18(%rbp)
mov    0x2dc2(%rip),%rax
mov    (%rax),%edi
call   1050 <strerror@plt>
mov    -0x18(%rbp),%edi
mov    %rax,%rdx
lea    0xe04(%rip),%rsi
call   1040 <fprintf@plt>
mov    0x2d9a(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
jmp    1234 <main+0xf4>
mov    0x2d81(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
mov    0x2e94(%rip),%rax
mov    (%rax),%edi
mov    0x2e83(%rip),%rax
mov    (%rax),%esi
mov    0x2e3a(%rip),%rax
mov    (%rax),%edx
call   1060 <socket@plt>
test   %eax,%eax
js     11a2 <main+0x62>
movl   $0x4,0x8(%rsp)
mov    0x2e70(%rip),%rcx
mov    (%rcx),%esi
mov    0x2e27(%rip),%rcx
mov    (%rcx),%edx
lea    0xc(%rsp),%rcx
lea    0x8(%rsp),%r8
mov    %eax,%edi
call   1030 <getsockopt@plt>
test   %rax,%rax
js     11c2 <main+0x82>
mov    0x2e10(%rip),%rax
jmp    11f1 <main+0xb1>
mov    0x2e1f(%rip),%rax
mov    (%rax),%ebx
mov    0x2e0e(%rip),%rax
mov    (%rax),%edi
call   1050 <strerror@plt>
lea    0xe40(%rip),%rsi
jmp    11e0 <main+0xa0>
mov    0x2dff(%rip),%rax
mov    (%rax),%ebx
mov    0x2dee(%rip),%rax
mov    (%rax),%edi
call   1050 <strerror@plt>
lea    0xe36(%rip),%rsi
mov    %ebx,%edi
mov    %rax,%rdx
call   1040 <fprintf@plt>
mov    0x2dc7(%rip),%rax
mov    (%rax),%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@AF_INET = global i32 0
@SOCK_DGRAM = global i32 0
@IPPROTO_UDP = global i32 0
@stderr = global i32 0
@.str = [22 x i8] c"socket() failed: %s\0A.\00"
@errno = global i32 0
@EXIT_FAILURE = global i32 0
@SOL_SOCKET = global i32 0
@SO_REUSEADDR = global i32 0
@.str.1 = [26 x i8] c"getsockopt() failed: %s\0A.\00"
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = alloca i32
%4 = alloca i32
store i32 0, i32* %1
%5 = load i32, i32* @AF_INET
%6 = load i32, i32* @SOCK_DGRAM
%7 = load i32, i32* @IPPROTO_UDP
%8 = call i32 @socket(i32 %5, i32 %6, i32 %7)
store i32 %8, i32* %2
%9 = icmp slt i32 %8, 0
br i1 %9, label %10, label %16
10: ; preds = %0
%11 = load i32, i32* @stderr
%12 = load i32, i32* @errno
%13 = call i8* @strerror(i32 %12)
%14 = call i32 @fprintf(i32 %11, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %13)
%15 = load i32, i32* @EXIT_FAILURE
store i32 %15, i32* %1
br label %30
16: ; preds = %0
store i32 4, i32* %4
%17 = load i32, i32* %2
%18 = load i32, i32* @SOL_SOCKET
%19 = load i32, i32* @SO_REUSEADDR
%20 = call i64 @getsockopt(i32 %17, i32 %18, i32 %19, i32* %3, i32* %4)
%21 = icmp slt i64 %20, 0
br i1 %21, label %22, label %28
22: ; preds = %16
%23 = load i32, i32* @stderr
%24 = load i32, i32* @errno
%25 = call i8* @strerror(i32 %24)
%26 = call i32 @fprintf(i32 %23, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.1, i64 0, i64 0), i8* %25)
%27 = load i32, i32* @EXIT_FAILURE
store i32 %27, i32* %1
br label %30
28: ; preds = %16
%29 = load i32, i32* @EXIT_SUCCESS
store i32 %29, i32* %1
br label %30
30: ; preds = %28, %22, %10
%31 = load i32, i32* %1
ret i32 %31
}

LLVM IR (-O2):
@AF_INET = global i32 0
@SOCK_DGRAM = global i32 0
@IPPROTO_UDP = global i32 0
@stderr = global i32 0
@.str = [22 x i8] c"socket() failed: %s\0A.\00"
@errno = global i32 0
@EXIT_FAILURE = global i32 0
@SOL_SOCKET = global i32 0
@SO_REUSEADDR = global i32 0
@.str.1 = [26 x i8] c"getsockopt() failed: %s\0A.\00"
@EXIT_SUCCESS = global i32 0
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
%3 = load i32, i32* @AF_INET
%4 = load i32, i32* @SOCK_DGRAM
%5 = load i32, i32* @IPPROTO_UDP
%6 = tail call i32 @socket(i32 %3, i32 %4, i32 %5)
%7 = icmp slt i32 %6, 0
br i1 %7, label %8, label %14
8: ; preds = %0
%9 = load i32, i32* @stderr
%10 = load i32, i32* @errno
%11 = tail call i8* @strerror(i32 %10)
%12 = tail call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([22 x i8], [22 x i8]* @.str, i64 0, i64 0), i8* %11)
%13 = load i32, i32* @EXIT_FAILURE
br label %29
14: ; preds = %0
%15 = bitcast i32* %1 to i8*
%16 = bitcast i32* %2 to i8*
store i32 4, i32* %2
%17 = load i32, i32* @SOL_SOCKET
%18 = load i32, i32* @SO_REUSEADDR
%19 = call i64 @getsockopt(i32 %6, i32 %17, i32 %18, i32* %1, i32* %2)
%20 = icmp slt i64 %19, 0
br i1 %20, label %21, label %26
21: ; preds = %14
%22 = load i32, i32* @stderr
%23 = load i32, i32* @errno
%24 = call i8* @strerror(i32 %23)
%25 = call i32 @fprintf(i32 %22, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.1, i64 0, i64 0), i8* %24)
br label %26
26: ; preds = %14, %21
%27 = phi i32* [ @EXIT_FAILURE, %21 ], [ @EXIT_SUCCESS, %14 ]
%28 = load i32, i32* %27
br label %29
29: ; preds = %26, %8
%30 = phi i32 [ %13, %8 ], [ %28, %26 ]
ret i32 %30
}