#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 WEXITSTATUS(int);
scalar_t__ WIFEXITED(int);
scalar_t__ chroot(char *);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ stderr;
int system(char *);
int main(int argc, char *argv[]) {
  int status;
  if (argc != 3) {
    fprintf(stderr, "usage: %s <root> <command>\n", argv[0]);
    return 1;
  }
  if (chroot(argv[1]) < 0) {
    perror("chroot");
    return 1;
  }
  status = system(argv[2]);
  if (WIFEXITED(status))
    return WEXITSTATUS(status);
  return 1;
}


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     11a8 <main+0x48>
mov    0x2e59(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe69(%rip),%rsi
call   1050 <fprintf@plt>
movl   $0x1,-0x4(%rbp)
jmp    1210 <main+0xb0>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1030 <chroot@plt>
cmp    $0x0,%rax
jge    11d7 <main+0x77>
lea    0xe56(%rip),%rdi
call   1070 <perror@plt>
movl   $0x1,-0x4(%rbp)
jmp    1210 <main+0xb0>
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1040 <system@plt>
mov    %eax,-0x14(%rbp)
mov    -0x14(%rbp),%edi
call   1080 <WIFEXITED@plt>
cmp    $0x0,%rax
je     1209 <main+0xa9>
mov    -0x14(%rbp),%edi
call   1060 <WEXITSTATUS@plt>
mov    %eax,-0x4(%rbp)
jmp    1210 <main+0xb0>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x3,%edi
jne    1196 <main+0x36>
mov    0x8(%rbx),%rdi
call   1030 <chroot@plt>
test   %rax,%rax
js     11b5 <main+0x55>
mov    0x10(%rbx),%rdi
call   1040 <system@plt>
mov    %eax,%ebx
mov    %eax,%edi
call   1080 <WIFEXITED@plt>
test   %rax,%rax
je     11ae <main+0x4e>
mov    %ebx,%edi
pop    %rbx
jmp    1060 <WEXITSTATUS@plt>
mov    0x2e43(%rip),%rax
mov    (%rax),%edi
mov    (%rbx),%rdx
lea    0xe57(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0x1,%eax
pop    %rbx
ret
lea    0xe60(%rip),%rdi
call   1070 <perror@plt>
jmp    11ae <main+0x4e>

LLVM IR (-O0):
@stderr = global i32 0
@.str = [28 x i8] c"usage: %s <root> <command>\0A\00"
@.str.1 = [7 x i8] c"chroot\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
%6 = alloca i32
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%7 = load i32, i32* %4
%8 = icmp ne i32 %7, 3
br i1 %8, label %9, label %15
9: ; preds = %2
%10 = load i32, i32* @stderr
%11 = load i8**, i8*** %5
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 @fprintf(i32 %10, i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i8* %13)
store i32 1, i32* %3
br label %35
15: ; preds = %2
%16 = load i8**, i8*** %5
%17 = getelementptr inbounds i8*, i8** %16, i64 1
%18 = load i8*, i8** %17
%19 = call i64 @chroot(i8* %18)
%20 = icmp slt i64 %19, 0
br i1 %20, label %21, label %23
21: ; preds = %15
%22 = call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0))
store i32 1, i32* %3
br label %35
23: ; preds = %15
%24 = load i8**, i8*** %5
%25 = getelementptr inbounds i8*, i8** %24, i64 2
%26 = load i8*, i8** %25
%27 = call i32 @system(i8* %26)
store i32 %27, i32* %6
%28 = load i32, i32* %6
%29 = call i64 @WIFEXITED(i32 %28)
%30 = icmp ne i64 %29, 0
br i1 %30, label %31, label %34
31: ; preds = %23
%32 = load i32, i32* %6
%33 = call i32 @WEXITSTATUS(i32 %32)
store i32 %33, i32* %3
br label %35
34: ; preds = %23
store i32 1, i32* %3
br label %35
35: ; preds = %34, %31, %21, %9
%36 = load i32, i32* %3
ret i32 %36
}

LLVM IR (-O2):
@stderr = global i32 0
@.str = [28 x i8] c"usage: %s <root> <command>\0A\00"
@.str.1 = [7 x i8] c"chroot\00"
define i32 @main(i32 %0, i8** nocapture %1) {
%3 = icmp eq i32 %0, 3
br i1 %3, label %8, label %4
4: ; preds = %2
%5 = load i32, i32* @stderr
%6 = load i8*, i8** %1
%7 = tail call i32 @fprintf(i32 %5, i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i8* %6)
br label %23
8: ; preds = %2
%9 = getelementptr inbounds i8*, i8** %1, i64 1
%10 = load i8*, i8** %9
%11 = tail call i64 @chroot(i8* %10)
%12 = icmp slt i64 %11, 0
br i1 %12, label %13, label %15
13: ; preds = %8
%14 = tail call i32 @perror(i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i64 0, i64 0))
br label %23
15: ; preds = %8
%16 = getelementptr inbounds i8*, i8** %1, i64 2
%17 = load i8*, i8** %16
%18 = tail call i32 @system(i8* %17)
%19 = tail call i64 @WIFEXITED(i32 %18)
%20 = icmp eq i64 %19, 0
br i1 %20, label %23, label %21
21: ; preds = %15
%22 = tail call i32 @WEXITSTATUS(i32 %18)
br label %23
23: ; preds = %15, %21, %13, %4
%24 = phi i32 [ 1, %4 ], [ 1, %13 ], [ %22, %21 ], [ 1, %15 ]
ret i32 %24
}