#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*/ PATH_MAX;
int /*<<< orphan*/ execl(char *, char const *, char *, int /*<<< orphan*/ *);
int /*<<< orphan*/ exit(int);
int /*<<< orphan*/ fprintf(int /*<<< orphan*/, char *, char const *);
int /*<<< orphan*/ free(char *);
char *realpath(char const *, char *);
int /*<<< orphan*/ stderr;
void child(char *i) {
  const char *file_name = "Omega";
  char buf[PATH_MAX + 1];
  char *full_path = realpath(file_name, buf);
  if (full_path == NULL) {
    fprintf(stderr, "Error: %s can not be found.\n", file_name);
    exit(1);
  }
  execl(full_path, file_name, i, NULL);
  free(full_path);
}


x86 assembly (clang, -O0):
<child>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
mov    %rdi,-0x8(%rbp)
lea    0xe9d(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    0x2e82(%rip),%rax
mov    (%rax),%eax
add    $0x1,%eax
mov    %rsp,%rcx
mov    %rcx,-0x18(%rbp)
mov    %rax,%rcx
add    $0xf,%rcx
and    $0xfffffffffffffff0,%rcx
mov    %rsp,%rsi
sub    %rcx,%rsi
mov    %rsi,%rsp
mov    %rax,-0x20(%rbp)
mov    -0x10(%rbp),%rdi
call   1050 <realpath@plt>
mov    %rax,-0x28(%rbp)
cmpq   $0x0,-0x28(%rbp)
jne    11cd <child+0x7d>
mov    0x2e27(%rip),%rax
mov    (%rax),%edi
mov    -0x10(%rbp),%rdx
lea    0xe48(%rip),%rsi
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>
mov    -0x28(%rbp),%rdi
mov    -0x10(%rbp),%rsi
mov    -0x8(%rbp),%rdx
xor    %eax,%eax
mov    %eax,%ecx
call   1070 <execl@plt>
mov    -0x28(%rbp),%rdi
call   1030 <free@plt>
mov    -0x18(%rbp),%rax
mov    %rax,%rsp
mov    %rbp,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<child>:
push   %rbp
mov    %rsp,%rbp
push   %r14
push   %rbx
mov    %rdi,%r14
mov    0x2e8f(%rip),%rax
mov    (%rax),%eax
add    $0x1,%eax
mov    %rsp,%rsi
add    $0xf,%rax
and    $0xfffffffffffffff0,%rax
sub    %rax,%rsi
mov    %rsi,%rsp
lea    0xe82(%rip),%rdi
call   1050 <realpath@plt>
test   %rax,%rax
je     11b0 <child+0x60>
mov    %rax,%rbx
lea    0xe6e(%rip),%rsi
mov    %rax,%rdi
mov    %r14,%rdx
xor    %ecx,%ecx
call   1070 <execl@plt>
mov    %rbx,%rdi
call   1030 <free@plt>
lea    -0x10(%rbp),%rsp
pop    %rbx
pop    %r14
pop    %rbp
ret
mov    0x2e21(%rip),%rax
mov    (%rax),%edi
lea    0xe46(%rip),%rsi
lea    0xe39(%rip),%rdx
call   1040 <fprintf@plt>
mov    $0x1,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [6 x i8] c"Omega\00"
@PATH_MAX = global i32 0
@stderr = global i32 0
@.str.1 = [29 x i8] c"Error: %s can not be found.\0A\00"
define void @child(i8* %0) {
%2 = alloca i8*
%3 = alloca i8*
%4 = alloca i8*
%5 = alloca i64
%6 = alloca i8*
store i8* %0, i8** %2
store i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8** %3
%7 = load i32, i32* @PATH_MAX
%8 = add nsw i32 %7, 1
%9 = zext i32 %8 to i64
%10 = call i8* @llvm.stacksave()
store i8* %10, i8** %4
%11 = alloca i8, i64 %9
store i64 %9, i64* %5
%12 = load i8*, i8** %3
%13 = call i8* @realpath(i8* %12, i8* %11)
store i8* %13, i8** %6
%14 = load i8*, i8** %6
%15 = icmp eq i8* %14, null
br i1 %15, label %16, label %21
16: ; preds = %1
%17 = load i32, i32* @stderr
%18 = load i8*, i8** %3
%19 = call i32 @fprintf(i32 %17, i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0), i8* %18)
%20 = call i32 @exit(i32 1)
unreachable
21: ; preds = %1
%22 = load i8*, i8** %6
%23 = load i8*, i8** %3
%24 = load i8*, i8** %2
%25 = call i32 @execl(i8* %22, i8* %23, i8* %24, i32* null)
%26 = load i8*, i8** %6
%27 = call i32 @free(i8* %26)
%28 = load i8*, i8** %4
ret void
}

LLVM IR (-O2):
@.str = [6 x i8] c"Omega\00"
@PATH_MAX = global i32 0
@stderr = global i32 0
@.str.1 = [29 x i8] c"Error: %s can not be found.\0A\00"
define void @child(i8* %0) {
%2 = load i32, i32* @PATH_MAX
%3 = add nsw i32 %2, 1
%4 = zext i32 %3 to i64
%5 = alloca i8, i64 %4
%6 = call i8* @realpath(i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* %5)
%7 = icmp eq i8* %6, null
br i1 %7, label %8, label %12
8: ; preds = %1
%9 = load i32, i32* @stderr
%10 = call i32 @fprintf(i32 %9, i8* getelementptr inbounds ([29 x i8], [29 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0))
%11 = call i32 @exit(i32 1)
unreachable
12: ; preds = %1
%13 = call i32 @execl(i8* %6, i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), i8* %0, i32* null)
%14 = call i32 @free(i8* %6)
ret void
}