#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 */
struct addrinfo {
  int /*<<< orphan*/ ai_addrlen;
  int /*<<< orphan*/ ai_addr;
  int /*<<< orphan*/ ai_protocol;
  int /*<<< orphan*/ ai_socktype;
  int /*<<< orphan*/ ai_family;
};
typedef int /*<<< orphan*/ hint;
typedef int /*<<< orphan*/ buf;

/* Variables and functions */
int /*<<< orphan*/ AF_INET;
int /*<<< orphan*/ SOCK_STREAM;
int connect(int, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ exit(int);
int getaddrinfo(char *, char *, struct addrinfo *, struct addrinfo **);
int /*<<< orphan*/ memset(struct addrinfo *, int /*<<< orphan*/, int);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ read(int, char *, int);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ strcpy(char *, char *);
int /*<<< orphan*/ write(int, char *, int);
int main(int argc, char *argv[]) {
  struct addrinfo hint, *result;
  int res, sfd;
  char buf[20];
  memset(&hint, 0, sizeof(hint));
  hint.ai_family = AF_INET;
  hint.ai_socktype = SOCK_STREAM;
  res = getaddrinfo("127.0.0.1", "8080", &hint, &result);
  if (res == -1) {
    perror("error : cannot get socket address!\n");
    exit(1);
  }
  sfd = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
  if (sfd == -1) {
    perror("error : cannot get socket file descriptor!\n");
    exit(1);
  }
  res = connect(sfd, result->ai_addr, result->ai_addrlen);
  if (res == -1) {
    perror("error : cannot connect the server!\n");
    exit(1);
  }
  strcpy(buf, "Hello Server!");
  write(sfd, buf, sizeof(buf));
  printf("write < %s > to server\n", buf);
  read(sfd, buf, sizeof(buf));
  printf("read < %s > from server\n", buf);
  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)
lea    -0x28(%rbp),%rdi
xor    %esi,%esi
mov    $0x14,%edx
call   1060 <memset@plt>
mov    0x2e1b(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x18(%rbp)
mov    0x2dff(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x1c(%rbp)
lea    0xe1b(%rip),%rdi
lea    0xe1e(%rip),%rsi
lea    -0x28(%rbp),%rdx
lea    -0x30(%rbp),%rcx
call   10b0 <getaddrinfo@plt>
mov    %eax,-0x34(%rbp)
cmpl   $0xffffffff,-0x34(%rbp)
jne    121c <main+0x7c>
lea    0xe02(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x30(%rbp),%rax
mov    0x10(%rax),%edi
mov    -0x30(%rbp),%rax
mov    0xc(%rax),%esi
mov    -0x30(%rbp),%rax
mov    0x8(%rax),%edx
call   10c0 <socket@plt>
mov    %eax,-0x38(%rbp)
cmpl   $0xffffffff,-0x38(%rbp)
jne    1259 <main+0xb9>
lea    0xde9(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x38(%rbp),%edi
mov    -0x30(%rbp),%rax
mov    0x4(%rax),%esi
mov    -0x30(%rbp),%rax
mov    (%rax),%edx
call   10a0 <connect@plt>
mov    %eax,-0x34(%rbp)
cmpl   $0xffffffff,-0x34(%rbp)
jne    1291 <main+0xf1>
lea    0xddd(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
lea    -0x50(%rbp),%rdi
lea    0xde7(%rip),%rsi
call   1030 <strcpy@plt>
mov    -0x38(%rbp),%edi
lea    -0x50(%rbp),%rsi
mov    $0x14,%edx
call   1040 <write@plt>
lea    -0x50(%rbp),%rsi
lea    0xdd4(%rip),%rdi
call   1050 <printf@plt>
mov    -0x38(%rbp),%edi
lea    -0x50(%rbp),%rsi
mov    $0x14,%edx
call   1070 <read@plt>
lea    -0x50(%rbp),%rsi
lea    0xdcb(%rip),%rdi
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x50,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x38,%rsp
lea    0x8(%rsp),%rbx
mov    %rbx,%rdi
xor    %esi,%esi
mov    $0x14,%edx
call   1060 <memset@plt>
mov    0x2e26(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x18(%rsp)
mov    0x2e09(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x14(%rsp)
lea    0xe24(%rip),%rdi
lea    0xe27(%rip),%rsi
mov    %rsp,%rcx
mov    %rbx,%rdx
call   10b0 <getaddrinfo@plt>
cmp    $0xffffffff,%eax
je     127f <main+0xdf>
mov    (%rsp),%rax
mov    0x10(%rax),%edi
mov    0x8(%rax),%edx
mov    0xc(%rax),%esi
call   10c0 <socket@plt>
cmp    $0xffffffff,%eax
je     1288 <main+0xe8>
mov    %eax,%ebx
mov    (%rsp),%rax
mov    (%rax),%edx
mov    0x4(%rax),%esi
mov    %ebx,%edi
call   10a0 <connect@plt>
cmp    $0xffffffff,%eax
je     1291 <main+0xf1>
lea    0xe57(%rip),%rsi
lea    0x20(%rsp),%r14
mov    %r14,%rdi
call   1030 <strcpy@plt>
mov    %ebx,%edi
mov    %r14,%rsi
mov    $0x14,%edx
call   1040 <write@plt>
lea    0xe42(%rip),%rdi
mov    %r14,%rsi
call   1050 <printf@plt>
mov    %ebx,%edi
mov    %r14,%rsi
mov    $0x14,%edx
call   1070 <read@plt>
lea    0xe3c(%rip),%rdi
mov    %r14,%rsi
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x38,%rsp
pop    %rbx
pop    %r14
ret
lea    0xd89(%rip),%rdi
jmp    1298 <main+0xf8>
lea    0xda4(%rip),%rdi
jmp    1298 <main+0xf8>
lea    0xdc7(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>

LLVM IR (-O0):
%struct.addrinfo = type { i32, i32, i32, i32, i32 }
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str = [10 x i8] c"127.0.0.1\00"
@.str.1 = [5 x i8] c"8080\00"
@.str.2 = [36 x i8] c"error : cannot get socket address!\0A\00"
@.str.3 = [44 x i8] c"error : cannot get socket file descriptor!\0A\00"
@.str.4 = [36 x i8] c"error : cannot connect the server!\0A\00"
@.str.5 = [14 x i8] c"Hello Server!\00"
@.str.6 = [24 x i8] c"write < %s > to server\0A\00"
@.str.7 = [25 x i8] c"read < %s > from server\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca %struct.addrinfo
%7 = alloca %struct.addrinfo*
%8 = alloca i32
%9 = alloca i32
%10 = alloca [20 x i8]
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%11 = call i32 @memset(%struct.addrinfo* %6, i32 0, i32 20)
%12 = load i32, i32* @AF_INET
%13 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %6, i32 0, i32 4
store i32 %12, i32* %13
%14 = load i32, i32* @SOCK_STREAM
%15 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %6, i32 0, i32 3
store i32 %14, i32* %15
%16 = call i32 @getaddrinfo(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), %struct.addrinfo* %6, %struct.addrinfo** %7)
store i32 %16, i32* %8
%17 = load i32, i32* %8
%18 = icmp eq i32 %17, -1
br i1 %18, label %19, label %22
19: ; preds = %2
%20 = call i32 @perror(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0))
%21 = call i32 @exit(i32 1)
unreachable
22: ; preds = %2
%23 = load %struct.addrinfo*, %struct.addrinfo** %7
%24 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %23, i32 0, i32 4
%25 = load i32, i32* %24
%26 = load %struct.addrinfo*, %struct.addrinfo** %7
%27 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %26, i32 0, i32 3
%28 = load i32, i32* %27
%29 = load %struct.addrinfo*, %struct.addrinfo** %7
%30 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %29, i32 0, i32 2
%31 = load i32, i32* %30
%32 = call i32 @socket(i32 %25, i32 %28, i32 %31)
store i32 %32, i32* %9
%33 = load i32, i32* %9
%34 = icmp eq i32 %33, -1
br i1 %34, label %35, label %38
35: ; preds = %22
%36 = call i32 @perror(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.3, i64 0, i64 0))
%37 = call i32 @exit(i32 1)
unreachable
38: ; preds = %22
%39 = load i32, i32* %9
%40 = load %struct.addrinfo*, %struct.addrinfo** %7
%41 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %40, i32 0, i32 1
%42 = load i32, i32* %41
%43 = load %struct.addrinfo*, %struct.addrinfo** %7
%44 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %43, i32 0, i32 0
%45 = load i32, i32* %44
%46 = call i32 @connect(i32 %39, i32 %42, i32 %45)
store i32 %46, i32* %8
%47 = load i32, i32* %8
%48 = icmp eq i32 %47, -1
br i1 %48, label %49, label %52
49: ; preds = %38
%50 = call i32 @perror(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.4, i64 0, i64 0))
%51 = call i32 @exit(i32 1)
unreachable
52: ; preds = %38
%53 = getelementptr inbounds [20 x i8], [20 x i8]* %10, i64 0, i64 0
%54 = call i32 @strcpy(i8* %53, i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0))
%55 = load i32, i32* %9
%56 = getelementptr inbounds [20 x i8], [20 x i8]* %10, i64 0, i64 0
%57 = call i32 @write(i32 %55, i8* %56, i32 20)
%58 = getelementptr inbounds [20 x i8], [20 x i8]* %10, i64 0, i64 0
%59 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.6, i64 0, i64 0), i8* %58)
%60 = load i32, i32* %9
%61 = getelementptr inbounds [20 x i8], [20 x i8]* %10, i64 0, i64 0
%62 = call i32 @read(i32 %60, i8* %61, i32 20)
%63 = getelementptr inbounds [20 x i8], [20 x i8]* %10, i64 0, i64 0
%64 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.7, i64 0, i64 0), i8* %63)
ret i32 0
}

LLVM IR (-O2):
%struct.addrinfo = type { i32, i32, i32, i32, i32 }
@AF_INET = global i32 0
@SOCK_STREAM = global i32 0
@.str = [10 x i8] c"127.0.0.1\00"
@.str.1 = [5 x i8] c"8080\00"
@.str.2 = [36 x i8] c"error : cannot get socket address!\0A\00"
@.str.3 = [44 x i8] c"error : cannot get socket file descriptor!\0A\00"
@.str.4 = [36 x i8] c"error : cannot connect the server!\0A\00"
@.str.5 = [14 x i8] c"Hello Server!\00"
@.str.6 = [24 x i8] c"write < %s > to server\0A\00"
@.str.7 = [25 x i8] c"read < %s > from server\0A\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = alloca %struct.addrinfo
%4 = alloca %struct.addrinfo*
%5 = alloca [20 x i8]
%6 = bitcast %struct.addrinfo* %3 to i8*
%7 = bitcast %struct.addrinfo** %4 to i8*
%8 = getelementptr inbounds [20 x i8], [20 x i8]* %5, i64 0, i64 0
%9 = call i32 @memset(%struct.addrinfo* %3, i32 0, i32 20)
%10 = load i32, i32* @AF_INET
%11 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %3, i64 0, i32 4
store i32 %10, i32* %11
%12 = load i32, i32* @SOCK_STREAM
%13 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %3, i64 0, i32 3
store i32 %12, i32* %13
%14 = call i32 @getaddrinfo(i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str, i64 0, i64 0), i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0), %struct.addrinfo* %3, %struct.addrinfo** %4)
%15 = icmp eq i32 %14, -1
br i1 %15, label %16, label %19
16: ; preds = %2
%17 = call i32 @perror(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.2, i64 0, i64 0))
%18 = call i32 @exit(i32 1)
unreachable
19: ; preds = %2
%20 = load %struct.addrinfo*, %struct.addrinfo** %4
%21 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %20, i64 0, i32 4
%22 = load i32, i32* %21
%23 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %20, i64 0, i32 3
%24 = load i32, i32* %23
%25 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %20, i64 0, i32 2
%26 = load i32, i32* %25
%27 = call i32 @socket(i32 %22, i32 %24, i32 %26)
%28 = icmp eq i32 %27, -1
br i1 %28, label %29, label %32
29: ; preds = %19
%30 = call i32 @perror(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str.3, i64 0, i64 0))
%31 = call i32 @exit(i32 1)
unreachable
32: ; preds = %19
%33 = load %struct.addrinfo*, %struct.addrinfo** %4
%34 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %33, i64 0, i32 1
%35 = load i32, i32* %34
%36 = getelementptr inbounds %struct.addrinfo, %struct.addrinfo* %33, i64 0, i32 0
%37 = load i32, i32* %36
%38 = call i32 @connect(i32 %27, i32 %35, i32 %37)
%39 = icmp eq i32 %38, -1
br i1 %39, label %40, label %43
40: ; preds = %32
%41 = call i32 @perror(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.4, i64 0, i64 0))
%42 = call i32 @exit(i32 1)
unreachable
43: ; preds = %32
%44 = call i32 @strcpy(i8* %8, i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.5, i64 0, i64 0))
%45 = call i32 @write(i32 %27, i8* %8, i32 20)
%46 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.6, i64 0, i64 0), i8* %8)
%47 = call i32 @read(i32 %27, i8* %8, i32 20)
%48 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.7, i64 0, i64 0), i8* %8)
ret i32 0
}