#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*/ atoi(char *);
scalar_t__ chown(char *, int /*<<< orphan*/, int);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ printf(char *);
int main(int argc, char *argv[]) {
  if (argc != 3) {
    printf("chown: requires two arguments (file, mode)\n");
    exit(1);
  }
  if (chown(argv[2], atoi(argv[1]), -1) != 0) {
    printf("chown: permission denied\n");
    exit(1);
  }
  exit(0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     1176 <main+0x36>
lea    0xe99(%rip),%rdi
call   1030 <printf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rax
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1050 <atoi@plt>
mov    -0x18(%rbp),%rdi
mov    %eax,%esi
mov    $0xffffffff,%edx
call   1040 <chown@plt>
cmp    $0x0,%rax
je     11bf <main+0x7f>
lea    0xe7c(%rip),%rdi
call   1030 <printf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
xor    %edi,%edi
call   1060 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbx
cmp    $0x3,%edi
jne    116e <main+0x2e>
mov    0x8(%rsi),%rdi
mov    0x10(%rsi),%rbx
call   1050 <atoi@plt>
mov    %rbx,%rdi
mov    %eax,%esi
mov    $0xffffffff,%edx
call   1040 <chown@plt>
test   %rax,%rax
jne    1177 <main+0x37>
xor    %edi,%edi
call   1060 <exit@plt>
lea    0xea4(%rip),%rdi
jmp    117e <main+0x3e>
lea    0xe82(%rip),%rdi
call   1030 <puts@plt>
mov    $0x1,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [44 x i8] c"chown: requires two arguments (file, mode)\0A\00"
@.str.1 = [26 x i8] c"chown: permission denied\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = load i32, i32* %4
%7 = icmp ne i32 %6, 3
br i1 %7, label %8, label %11
8: ; preds = %2
%9 = call i32 @printf(i8* getelementptr inbounds ([44 x i8], [44 x i8]* @.str, i64 0, i64 0))
%10 = call i32 @exit(i32 1)
unreachable
11: ; preds = %2
%12 = load i8**, i8*** %5
%13 = getelementptr inbounds i8*, i8** %12, i64 2
%14 = load i8*, i8** %13
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i32 @atoi(i8* %17)
%19 = call i64 @chown(i8* %14, i32 %18, i32 -1)
%20 = icmp ne i64 %19, 0
br i1 %20, label %21, label %24
21: ; preds = %11
%22 = call i32 @printf(i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.1, i64 0, i64 0))
%23 = call i32 @exit(i32 1)
unreachable
24: ; preds = %11
%25 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@str = [25 x i8] c"chown: permission denied\00"
@str.2 = [43 x i8] c"chown: requires two arguments (file, mode)\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %7, label %4
4: ; preds = %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([43 x i8], [43 x i8]* @str.2, i64 0, i64 0))
%6 = tail call i32 @exit(i32 1)
unreachable
7: ; preds = %2
%8 = getelementptr inbounds i8*, i8** %1, i64 2
%9 = load i8*, i8** %8
%10 = getelementptr inbounds i8*, i8** %1, i64 1
%11 = load i8*, i8** %10
%12 = tail call i32 @atoi(i8* %11)
%13 = tail call i64 @chown(i8* %9, i32 %12, i32 -1)
%14 = icmp eq i64 %13, 0
br i1 %14, label %18, label %15
15: ; preds = %7
%16 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([25 x i8], [25 x i8]* @str, i64 0, i64 0))
%17 = tail call i32 @exit(i32 1)
unreachable
18: ; preds = %7
%19 = tail call i32 @exit(i32 0)
unreachable
}