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


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
cmpl   $0x3,-0x8(%rbp)
je     1188 <main+0x48>
mov    0x2e79(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rax
mov    (%rax),%rdx
lea    0xe89(%rip),%rsi
call   1050 <fprintf@plt>
movl   $0x1,-0x4(%rbp)
jmp    11cb <main+0x8b>
mov    -0x10(%rbp),%rax
mov    0x8(%rax),%rdi
call   1030 <chroot@plt>
cmp    $0x0,%rax
jge    11b7 <main+0x77>
lea    0xe76(%rip),%rdi
call   1060 <perror@plt>
movl   $0x1,-0x4(%rbp)
jmp    11cb <main+0x8b>
mov    -0x10(%rbp),%rax
mov    0x10(%rax),%rdi
call   1040 <system@plt>
movl   $0x0,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
mov    %rsi,%rbx
cmp    $0x3,%edi
jne    1164 <main+0x24>
mov    0x8(%rbx),%rdi
call   1030 <chroot@plt>
test   %rax,%rax
js     1183 <main+0x43>
mov    0x10(%rbx),%rdi
call   1040 <system@plt>
xor    %eax,%eax
pop    %rbx
ret
mov    0x2e75(%rip),%rax
mov    (%rax),%edi
mov    (%rbx),%rdx
lea    0xe89(%rip),%rsi
call   1050 <fprintf@plt>
mov    $0x1,%eax
pop    %rbx
ret
lea    0xe92(%rip),%rdi
call   1060 <perror@plt>
jmp    117c <main+0x3c>

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**
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 %14
8: ; preds = %2
%9 = load i32, i32* @stderr
%10 = load i8**, i8*** %5
%11 = getelementptr inbounds i8*, i8** %10, i64 0
%12 = load i8*, i8** %11
%13 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([28 x i8], [28 x i8]* @.str, i64 0, i64 0), i8* %12)
store i32 1, i32* %3
br label %27
14: ; preds = %2
%15 = load i8**, i8*** %5
%16 = getelementptr inbounds i8*, i8** %15, i64 1
%17 = load i8*, i8** %16
%18 = call i64 @chroot(i8* %17)
%19 = icmp slt i64 %18, 0
br i1 %19, label %20, label %22
20: ; preds = %14
%21 = 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 %27
22: ; preds = %14
%23 = load i8**, i8*** %5
%24 = getelementptr inbounds i8*, i8** %23, i64 2
%25 = load i8*, i8** %24
%26 = call i32 @system(i8* %25)
store i32 0, i32* %3
br label %27
27: ; preds = %22, %20, %8
%28 = load i32, i32* %3
ret i32 %28
}

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 %19
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 %19
15: ; preds = %8
%16 = getelementptr inbounds i8*, i8** %1, i64 2
%17 = load i8*, i8** %16
%18 = tail call i32 @system(i8* %17)
br label %19
19: ; preds = %15, %13, %4
%20 = phi i32 [ 1, %4 ], [ 1, %13 ], [ 0, %15 ]
ret i32 %20
}