#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 */
typedef int pid_t;

/* Variables and functions */
int getegid();
int geteuid();
int getgid();
int getpid();
int getppid();
int getuid();
int /*<<< orphan*/ printf(char *, int);
int main(void) {
  pid_t pid;
  printf("\nProcess ID = %d\n", pid = getpid());
  printf("Parent process ID = %d\n", getppid());
  printf("Real User ID = %d\n", getuid());
  printf("Effective User ID = %d\n", geteuid());
  printf("Real group ID = %d\n", getgid());
  printf("Effective group ID = %d\n", getegid());
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    $0x0,%al
call   1030 <getpid@plt>
mov    %eax,%esi
mov    %esi,-0x8(%rbp)
lea    0xe6e(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1090 <getppid@plt>
mov    %eax,%esi
lea    0xe6b(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1040 <getuid@plt>
mov    %eax,%esi
lea    0xe6e(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1060 <geteuid@plt>
mov    %eax,%esi
lea    0xe6c(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1070 <getgid@plt>
mov    %eax,%esi
lea    0xe6f(%rip),%rdi
call   1050 <printf@plt>
mov    $0x0,%al
call   1080 <getegid@plt>
mov    %eax,%esi
lea    0xe6e(%rip),%rdi
call   1050 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
xor    %eax,%eax
call   1030 <getpid@plt>
lea    0xe81(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1090 <getppid@plt>
lea    0xe7e(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1040 <getuid@plt>
lea    0xe81(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1060 <geteuid@plt>
lea    0xe7f(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1070 <getgid@plt>
lea    0xe82(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
call   1080 <getegid@plt>
lea    0xe81(%rip),%rdi
mov    %eax,%esi
call   1050 <printf@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [18 x i8] c"\0AProcess ID = %d\0A\00"
@.str.1 = [24 x i8] c"Parent process ID = %d\0A\00"
@.str.2 = [19 x i8] c"Real User ID = %d\0A\00"
@.str.3 = [24 x i8] c"Effective User ID = %d\0A\00"
@.str.4 = [20 x i8] c"Real group ID = %d\0A\00"
@.str.5 = [25 x i8] c"Effective group ID = %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i32
store i32 0, i32* %1
%3 = call i32 (...) @getpid()
store i32 %3, i32* %2
%4 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i32 %3)
%5 = call i32 (...) @getppid()
%6 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i32 %5)
%7 = call i32 (...) @getuid()
%8 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i32 %7)
%9 = call i32 (...) @geteuid()
%10 = call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %9)
%11 = call i32 (...) @getgid()
%12 = call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.4, i64 0, i64 0), i32 %11)
%13 = call i32 (...) @getegid()
%14 = call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.5, i64 0, i64 0), i32 %13)
ret i32 0
}

LLVM IR (-O2):
@.str = [18 x i8] c"\0AProcess ID = %d\0A\00"
@.str.1 = [24 x i8] c"Parent process ID = %d\0A\00"
@.str.2 = [19 x i8] c"Real User ID = %d\0A\00"
@.str.3 = [24 x i8] c"Effective User ID = %d\0A\00"
@.str.4 = [20 x i8] c"Real group ID = %d\0A\00"
@.str.5 = [25 x i8] c"Effective group ID = %d\0A\00"
define i32 @main() {
%1 = tail call i32 (...) @getpid()
%2 = tail call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str, i64 0, i64 0), i32 %1)
%3 = tail call i32 (...) @getppid()
%4 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.1, i64 0, i64 0), i32 %3)
%5 = tail call i32 (...) @getuid()
%6 = tail call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str.2, i64 0, i64 0), i32 %5)
%7 = tail call i32 (...) @geteuid()
%8 = tail call i32 @printf(i8* getelementptr inbounds ([24 x i8], [24 x i8]* @.str.3, i64 0, i64 0), i32 %7)
%9 = tail call i32 (...) @getgid()
%10 = tail call i32 @printf(i8* getelementptr inbounds ([20 x i8], [20 x i8]* @.str.4, i64 0, i64 0), i32 %9)
%11 = tail call i32 (...) @getegid()
%12 = tail call i32 @printf(i8* getelementptr inbounds ([25 x i8], [25 x i8]* @.str.5, i64 0, i64 0), i32 %11)
ret i32 0
}