#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 sockaddr_un {
  int /*<<< orphan*/ sun_path;
  int /*<<< orphan*/ sun_family;
};
struct sockaddr {
  int dummy;
};

/* Variables and functions */
int /*<<< orphan*/ AF_UNIX;
int /*<<< orphan*/ SOCK_STREAM;
int bind(int, struct sockaddr *, int);
int /*<<< orphan*/ exit(int);
int listen(int, int);
int /*<<< orphan*/ perror(char *);
int socket(int /*<<< orphan*/, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ strcpy(int /*<<< orphan*/, char *);
int strlen(int /*<<< orphan*/);
int /*<<< orphan*/ unlink(int /*<<< orphan*/);
int create_listening_socket(char *path) {
  struct sockaddr_un local;
  int len, conn_socket;
  if ((conn_socket = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
    perror("socket");
    exit(1);
  }
  local.sun_family = AF_UNIX;
  strcpy(local.sun_path, path);
  unlink(local.sun_path);
  len = strlen(local.sun_path) + sizeof(local.sun_family);
  if (bind(conn_socket, (struct sockaddr *)&local, len) == -1) {
    perror("bind");
    exit(1);
  }
  if (listen(conn_socket, 5) == -1) {
    perror("listen");
    exit(1);
  }
  return conn_socket;
}


x86 assembly (clang, -O0):
<create_listening_socket>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    0x2e55(%rip),%rax
mov    (%rax),%edi
mov    0x2e3c(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10a0 <socket@plt>
mov    %eax,-0x18(%rbp)
cmp    $0xffffffff,%eax
jne    11c7 <create_listening_socket+0x47>
lea    0xe48(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    0x2e1a(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0xc(%rbp)
mov    -0x10(%rbp),%edi
mov    -0x8(%rbp),%rsi
call   1040 <strcpy@plt>
mov    -0x10(%rbp),%edi
call   1030 <unlink@plt>
mov    -0x10(%rbp),%edi
call   1050 <strlen@plt>
cltq
add    $0x4,%rax
mov    %eax,-0x14(%rbp)
mov    -0x18(%rbp),%edi
lea    -0x10(%rbp),%rsi
mov    -0x14(%rbp),%edx
call   1070 <bind@plt>
cmp    $0xffffffff,%eax
jne    1226 <create_listening_socket+0xa6>
lea    0xdf0(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x18(%rbp),%edi
mov    $0x5,%esi
call   1060 <listen@plt>
cmp    $0xffffffff,%eax
jne    1252 <create_listening_socket+0xd2>
lea    0xdc9(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>
mov    -0x18(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<create_listening_socket>:
push   %r15
push   %r14
push   %rbx
sub    $0x10,%rsp
mov    %rdi,%r14
mov    0x2e55(%rip),%r15
mov    (%r15),%edi
mov    0x2e3b(%rip),%rax
mov    (%rax),%esi
xor    %edx,%edx
call   10a0 <socket@plt>
cmp    $0xffffffff,%eax
je     11f7 <create_listening_socket+0x77>
mov    %eax,%ebx
mov    (%r15),%eax
mov    %eax,0xc(%rsp)
mov    %r14,%rsi
call   1040 <strcpy@plt>
call   1030 <unlink@plt>
call   1050 <strlen@plt>
lea    0x4(%rax),%edx
lea    0x8(%rsp),%rsi
mov    %ebx,%edi
call   1070 <bind@plt>
cmp    $0xffffffff,%eax
je     1200 <create_listening_socket+0x80>
mov    %ebx,%edi
mov    $0x5,%esi
call   1060 <listen@plt>
cmp    $0xffffffff,%eax
je     1209 <create_listening_socket+0x89>
mov    %ebx,%eax
add    $0x10,%rsp
pop    %rbx
pop    %r14
pop    %r15
ret
lea    0xe02(%rip),%rdi
jmp    1210 <create_listening_socket+0x90>
lea    0xe00(%rip),%rdi
jmp    1210 <create_listening_socket+0x90>
lea    0xdfc(%rip),%rdi
call   1080 <perror@plt>
mov    $0x1,%edi
call   1090 <exit@plt>

LLVM IR (-O0):
%struct.sockaddr_un = type { i32, i32 }
%struct.sockaddr = type { i32 }
@AF_UNIX = global i32 0
@SOCK_STREAM = global i32 0
@.str = [7 x i8] c"socket\00"
@.str.1 = [5 x i8] c"bind\00"
@.str.2 = [7 x i8] c"listen\00"
define i32 @create_listening_socket(i8* %0) {
%2 = alloca i8*
%3 = alloca %struct.sockaddr_un
%4 = alloca i32
%5 = alloca i32
store i8* %0, i8** %2
%6 = load i32, i32* @AF_UNIX
%7 = load i32, i32* @SOCK_STREAM
%8 = call i32 @socket(i32 %6, i32 %7, i32 0)
store i32 %8, i32* %5
%9 = icmp eq i32 %8, -1
br i1 %9, label %10, label %13
10: ; preds = %1
%11 = call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%12 = call i32 @exit(i32 1)
unreachable
13: ; preds = %1
%14 = load i32, i32* @AF_UNIX
%15 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %3, i32 0, i32 1
store i32 %14, i32* %15
%16 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %3, i32 0, i32 0
%17 = load i32, i32* %16
%18 = load i8*, i8** %2
%19 = call i32 @strcpy(i32 %17, i8* %18)
%20 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %3, i32 0, i32 0
%21 = load i32, i32* %20
%22 = call i32 @unlink(i32 %21)
%23 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %3, i32 0, i32 0
%24 = load i32, i32* %23
%25 = call i32 @strlen(i32 %24)
%26 = sext i32 %25 to i64
%27 = add i64 %26, 4
%28 = trunc i64 %27 to i32
store i32 %28, i32* %4
%29 = load i32, i32* %5
%30 = bitcast %struct.sockaddr_un* %3 to %struct.sockaddr*
%31 = load i32, i32* %4
%32 = call i32 @bind(i32 %29, %struct.sockaddr* %30, i32 %31)
%33 = icmp eq i32 %32, -1
br i1 %33, label %34, label %37
34: ; preds = %13
%35 = call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%36 = call i32 @exit(i32 1)
unreachable
37: ; preds = %13
%38 = load i32, i32* %5
%39 = call i32 @listen(i32 %38, i32 5)
%40 = icmp eq i32 %39, -1
br i1 %40, label %41, label %44
41: ; preds = %37
%42 = call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0))
%43 = call i32 @exit(i32 1)
unreachable
44: ; preds = %37
%45 = load i32, i32* %5
ret i32 %45
}

LLVM IR (-O2):
%struct.sockaddr_un = type { i32, i32 }
%struct.sockaddr = type { i32 }
@AF_UNIX = global i32 0
@SOCK_STREAM = global i32 0
@.str = [7 x i8] c"socket\00"
@.str.1 = [5 x i8] c"bind\00"
@.str.2 = [7 x i8] c"listen\00"
define i32 @create_listening_socket(i8* %0) {
%2 = alloca %struct.sockaddr_un
%3 = bitcast %struct.sockaddr_un* %2 to i8*
%4 = load i32, i32* @AF_UNIX
%5 = load i32, i32* @SOCK_STREAM
%6 = tail call i32 @socket(i32 %4, i32 %5, i32 0)
%7 = icmp eq i32 %6, -1
br i1 %7, label %8, label %11
8: ; preds = %1
%9 = tail call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str, i64 0, i64 0))
%10 = tail call i32 @exit(i32 1)
unreachable
11: ; preds = %1
%12 = load i32, i32* @AF_UNIX
%13 = getelementptr inbounds %struct.sockaddr_un, %struct.sockaddr_un* %2, i64 0, i32 1
store i32 %12, i32* %13
%14 = tail call i32 @strcpy(i32 undef, i8* %0)
%15 = tail call i32 @unlink(i32 undef)
%16 = tail call i32 @strlen(i32 undef)
%17 = add i32 %16, 4
%18 = bitcast %struct.sockaddr_un* %2 to %struct.sockaddr*
%19 = call i32 @bind(i32 %6, %struct.sockaddr* %18, i32 %17)
%20 = icmp eq i32 %19, -1
br i1 %20, label %21, label %24
21: ; preds = %11
%22 = call i32 @perror(i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%23 = call i32 @exit(i32 1)
unreachable
24: ; preds = %11
%25 = call i32 @listen(i32 %6, i32 5)
%26 = icmp eq i32 %25, -1
br i1 %26, label %27, label %30
27: ; preds = %24
%28 = call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.2, i64 0, i64 0))
%29 = call i32 @exit(i32 1)
unreachable
30: ; preds = %24
ret i32 %6
}