#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 */
typedef struct TYPE_2__ TYPE_1__;

/* Type definitions */
struct TYPE_2__ {
  int /*<<< orphan*/ s_addr;
};
struct sockaddr_in {
  int /*<<< orphan*/ sin_port;
  TYPE_1__ sin_addr;
  int /*<<< orphan*/ sin_family;
};
struct sockaddr {
  int dummy;
};
typedef int /*<<< orphan*/ serv_addr;
typedef int /*<<< orphan*/ message;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int /*<<< orphan*/ PF_INET;
int /*<<< orphan*/ SOCK_STREAM;
int /*<<< orphan*/ atoi(char *);
int /*<<< orphan*/ close(int);
int connect(int, struct sockaddr *, int);
int /*<<< orphan*/ error_handling(char *);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ htons(int /*<<< orphan*/);
int /*<<< orphan*/ inet_addr(char *);
int /*<<< orphan*/ memset(struct sockaddr_in *, int /*<<< orphan*/, int);
int /*<<< orphan*/ printf(char *, char *);
int read(int, char *, int);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int main(int argc, char *argv[]) {
  int sock;
  struct sockaddr_in serv_addr;
  char message[30];
  int str_len;
  if (argc != 3) {
    printf("Usage : %s <IP> <port>\n", argv[0]);
    exit(1);
  }
  sock = socket(PF_INET, SOCK_STREAM, 0);
  if (sock == -1) {
    error_handling("socket() error");
  }
  memset(&serv_addr, 0, sizeof(serv_addr));
  serv_addr.sin_family = AF_INET;
  serv_addr.sin_addr.s_addr = inet_addr(argv[1]);
  serv_addr.sin_port = htons(atoi(argv[2]));
  if (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1) {
    error_handling("connect() error!");
  }
  str_len = read(sock, message, sizeof(message) - 1);
  if (str_len == -1) {
    error_handling("read() error!");
  }
  printf("Message from server : %s \n", message);
  close(sock);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x50,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     11ed <main+0x3d>
mov    -0x10(%rbp),%rax
mov    (%rax),%rsi
lea    0xe22(%rip),%rdi
call   1040 <printf@plt>
mov    $0x1,%edi
call   10b0 <exit@plt>
mov    0x2ddc(%rip),%rax
mov    (%rax),%edi
mov    0x2ddb(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10d0 <socket@plt>
mov    %eax,-0x14(%rbp)
cmpl   $0xffffffff,-0x14(%rbp)
jne    121f <main+0x6f>
lea    0xdfe(%rip),%rdi
call   1090 <error_handling@plt>
lea    -0x20(%rbp),%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1050 <memset@plt>
mov    0x2db2(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1080 <inet_addr@plt>
mov    %eax,-0x1c(%rbp)
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   10a0 <atoi@plt>
mov    %eax,%edi
call   1030 <htons@plt>
mov    %eax,-0x20(%rbp)
mov    -0x14(%rbp),%edi
lea    -0x20(%rbp),%rsi
mov    $0xc,%edx
call   10c0 <connect@plt>
cmp    $0xffffffff,%eax
jne    1288 <main+0xd8>
lea    0xda4(%rip),%rdi
call   1090 <error_handling@plt>
mov    -0x14(%rbp),%edi
lea    -0x40(%rbp),%rsi
mov    $0x1d,%edx
call   1070 <read@plt>
mov    %eax,-0x44(%rbp)
cmpl   $0xffffffff,-0x44(%rbp)
jne    12b2 <main+0x102>
lea    0xd8b(%rip),%rdi
call   1090 <error_handling@plt>
lea    -0x40(%rbp),%rsi
lea    0xd89(%rip),%rdi
call   1040 <printf@plt>
mov    -0x14(%rbp),%edi
call   1060 <close@plt>
xor    %eax,%eax
add    $0x50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r15
push   %r14
push   %rbx
sub    $0x30,%rsp
mov    %rsi,%r14
cmp    $0x3,%edi
jne    1296 <main+0xe6>
mov    0x2e04(%rip),%rax
mov    (%rax),%edi
mov    0x2e03(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10d0 <socket@plt>
mov    %eax,%ebx
cmp    $0xffffffff,%eax
jne    11f1 <main+0x41>
lea    0xe2c(%rip),%rdi
call   1090 <error_handling@plt>
mov    %rsp,%r15
mov    %r15,%rdi
xor    %esi,%esi
mov    $0xc,%edx
call   1050 <memset@plt>
mov    0x2dde(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x8(%rsp)
mov    0x8(%r14),%rdi
call   1080 <inet_addr@plt>
mov    %eax,0x4(%rsp)
mov    0x10(%r14),%rdi
call   10a0 <atoi@plt>
mov    %eax,%edi
call   1030 <htons@plt>
mov    %eax,(%rsp)
mov    %ebx,%edi
mov    %r15,%rsi
mov    $0xc,%edx
call   10c0 <connect@plt>
cmp    $0xffffffff,%eax
jne    1250 <main+0xa0>
lea    0xddc(%rip),%rdi
call   1090 <error_handling@plt>
lea    0x10(%rsp),%rsi
mov    %ebx,%edi
mov    $0x1d,%edx
call   1070 <read@plt>
cmp    $0xffffffff,%eax
jne    1272 <main+0xc2>
lea    0xdcb(%rip),%rdi
call   1090 <error_handling@plt>
lea    0xdcd(%rip),%rdi
lea    0x10(%rsp),%rsi
call   1040 <printf@plt>
mov    %ebx,%edi
call   1060 <close@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret
mov    (%r14),%rsi
lea    0xd60(%rip),%rdi
call   1040 <printf@plt>
mov    $0x1,%edi
call   10b0 <exit@plt>

LLVM IR (-O0):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@.str = [24 x i8] c"Usage : %s <IP> <port>\0A\00"
@PF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str.1 = [15 x i8] c"socket() error\00"
@AF_INET = global i32 0
@.str.2 = [17 x i8] c"connect() error!\00"
@.str.3 = [14 x i8] c"read() error!\00"
@.str.4 = [27 x i8] c"Message from server : %s \0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
%7 = alloca %struct.sockaddr_in
%8 = alloca [30 x i8]
%9 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%10 = load i32, i32* %4
%11 = icmp ne i32 %10, 3
br i1 %11, label %12, label %18
12: ; preds = %2
%13 = load i8**, i8*** %5
%14 = getelementptr inbounds i8*, i8** %13, i64 0
%15 = load i8*, i8** %14
%16 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i8* %15)
%17 = call i32 @exit(i32 1)
unreachable
18: ; preds = %2
%19 = load i32, i32* @PF_INET
%20 = load i32, i32* @SOCK_STREAM
%21 = call i32 @socket(i32 %19, i32 %20, i32 0)
store i32 %21, i32* %6
%22 = load i32, i32* %6
%23 = icmp eq i32 %22, -1
br i1 %23, label %24, label %26
24: ; preds = %18
%25 = call i32 @error_handling(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0))
br label %26
26: ; preds = %24, %18
%27 = call i32 @memset(%struct.sockaddr_in* %7, i32 0, i32 12)
%28 = load i32, i32* @AF_INET
%29 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 2
store i32 %28, i32* %29
%30 = load i8**, i8*** %5
%31 = getelementptr inbounds i8*, i8** %30, i64 1
%32 = load i8*, i8** %31
%33 = call i32 @inet_addr(i8* %32)
%34 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 1
%35 = getelementptr inbounds %struct.TYPE_2__, %struct.TYPE_2__* %34, i32 0, i32 0
store i32 %33, i32* %35
%36 = load i8**, i8*** %5
%37 = getelementptr inbounds i8*, i8** %36, i64 2
%38 = load i8*, i8** %37
%39 = call i32 @atoi(i8* %38)
%40 = call i32 @htons(i32 %39)
%41 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %7, i32 0, i32 0
store i32 %40, i32* %41
%42 = load i32, i32* %6
%43 = bitcast %struct.sockaddr_in* %7 to %struct.sockaddr*
%44 = call i32 @connect(i32 %42, %struct.sockaddr* %43, i32 12)
%45 = icmp eq i32 %44, -1
br i1 %45, label %46, label %48
46: ; preds = %26
%47 = call i32 @error_handling(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0))
br label %48
48: ; preds = %46, %26
%49 = load i32, i32* %6
%50 = getelementptr inbounds [30 x i8], [30 x i8]* %8, i64 0, i64 0
%51 = call i32 @read(i32 %49, i8* %50, i32 29)
store i32 %51, i32* %9
%52 = load i32, i32* %9
%53 = icmp eq i32 %52, -1
br i1 %53, label %54, label %56
54: ; preds = %48
%55 = call i32 @error_handling(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.3, i64 0, i64 0))
br label %56
56: ; preds = %54, %48
%57 = getelementptr inbounds [30 x i8], [30 x i8]* %8, i64 0, i64 0
%58 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.4, i64 0, i64 0), i8* %57)
%59 = load i32, i32* %6
%60 = call i32 @close(i32 %59)
ret i32 0
}

LLVM IR (-O2):
%struct.sockaddr_in = type { i32, %struct.TYPE_2__, i32 }
%struct.TYPE_2__ = type { i32 }
%struct.sockaddr = type { i32 }
@.str = [24 x i8] c"Usage : %s <IP> <port>\0A\00"
@PF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str.1 = [15 x i8] c"socket() error\00"
@AF_INET = global i32 0
@.str.2 = [17 x i8] c"connect() error!\00"
@.str.3 = [14 x i8] c"read() error!\00"
@.str.4 = [27 x i8] c"Message from server : %s \0A\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = alloca %struct.sockaddr_in
%4 = alloca [30 x i8]
%5 = bitcast %struct.sockaddr_in* %3 to i8*
%6 = getelementptr inbounds [30 x i8], [30 x i8]* %4, i64 0, i64 0
%7 = icmp eq i32 %0, 3
br i1 %7, label %12, label %8
8: ; preds = %2
%9 = load i8*, i8** %1
%10 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str, i64 0, i64 0), i8* %9)
%11 = tail call i32 @exit(i32 1)
unreachable
12: ; preds = %2
%13 = load i32, i32* @PF_INET
%14 = load i32, i32* @SOCK_STREAM
%15 = tail call i32 @socket(i32 %13, i32 %14, i32 0)
%16 = icmp eq i32 %15, -1
br i1 %16, label %17, label %19
17: ; preds = %12
%18 = tail call i32 @error_handling(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.1, i64 0, i64 0))
br label %19
19: ; preds = %17, %12
%20 = call i32 @memset(%struct.sockaddr_in* %3, i32 0, i32 12)
%21 = load i32, i32* @AF_INET
%22 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 2
store i32 %21, i32* %22
%23 = getelementptr inbounds i8*, i8** %1, i64 1
%24 = load i8*, i8** %23
%25 = call i32 @inet_addr(i8* %24)
%26 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 1, i32 0
store i32 %25, i32* %26
%27 = getelementptr inbounds i8*, i8** %1, i64 2
%28 = load i8*, i8** %27
%29 = call i32 @atoi(i8* %28)
%30 = call i32 @htons(i32 %29)
%31 = getelementptr inbounds %struct.sockaddr_in, %struct.sockaddr_in* %3, i64 0, i32 0
store i32 %30, i32* %31
%32 = bitcast %struct.sockaddr_in* %3 to %struct.sockaddr*
%33 = call i32 @connect(i32 %15, %struct.sockaddr* %32, i32 12)
%34 = icmp eq i32 %33, -1
br i1 %34, label %35, label %37
35: ; preds = %19
%36 = call i32 @error_handling(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.2, i64 0, i64 0))
br label %37
37: ; preds = %35, %19
%38 = call i32 @read(i32 %15, i8* %6, i32 29)
%39 = icmp eq i32 %38, -1
br i1 %39, label %40, label %42
40: ; preds = %37
%41 = call i32 @error_handling(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.3, i64 0, i64 0))
br label %42
42: ; preds = %40, %37
%43 = call i32 @printf(i8* getelementptr inbounds ([27 x i8], [27 x i8]* @.str.4, i64 0, i64 0), i8* %6)
%44 = call i32 @close(i32 %15)
ret i32 0
}