#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 S_IRGRP;
int S_IROTH;
int S_IRUSR;
int S_IWGRP;
int S_IWOTH;
int S_IWUSR;
scalar_t__ creat(char *, int);
int /*<<< orphan*/ err_sys(char *);
int /*<<< orphan*/ exit(int /*<<< orphan*/);
int /*<<< orphan*/ umask(int);
int main() {
  umask(0);
  if (creat("foo", S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH) <
      0)
    err_sys("creat foo error!\n");
  umask(S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH);
  if (creat("bar", S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH) <
      0)
    err_sys("creat bar error!\n");
  exit(0);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
xor    %edi,%edi
call   1040 <umask@plt>
mov    0x2e63(%rip),%rax
mov    (%rax),%esi
mov    0x2e7a(%rip),%rax
or     (%rax),%esi
mov    0x2e61(%rip),%rax
or     (%rax),%esi
mov    0x2e70(%rip),%rax
or     (%rax),%esi
mov    0x2e47(%rip),%rax
or     (%rax),%esi
mov    0x2e26(%rip),%rax
or     (%rax),%esi
lea    0xe6d(%rip),%rdi
call   1050 <creat@plt>
cmp    $0x0,%rax
jge    11ae <main+0x6e>
lea    0xe5b(%rip),%rdi
call   1030 <err_sys@plt>
mov    0x2e1b(%rip),%rax
mov    (%rax),%edi
mov    0x2e2a(%rip),%rax
or     (%rax),%edi
mov    0x2e01(%rip),%rax
or     (%rax),%edi
mov    0x2de0(%rip),%rax
or     (%rax),%edi
call   1040 <umask@plt>
mov    0x2de2(%rip),%rax
mov    (%rax),%esi
mov    0x2df9(%rip),%rax
or     (%rax),%esi
mov    0x2de0(%rip),%rax
or     (%rax),%esi
mov    0x2def(%rip),%rax
or     (%rax),%esi
mov    0x2dc6(%rip),%rax
or     (%rax),%esi
mov    0x2da5(%rip),%rax
or     (%rax),%esi
lea    0xe02(%rip),%rdi
call   1050 <creat@plt>
cmp    $0x0,%rax
jge    122f <main+0xef>
lea    0xdf0(%rip),%rdi
call   1030 <err_sys@plt>
xor    %edi,%edi
call   1060 <exit@plt>

x86 assembly (clang, -O2):
<main>:
push   %rbp
push   %r15
push   %r14
push   %r13
push   %r12
push   %rbx
push   %rax
xor    %edi,%edi
call   1040 <umask@plt>
mov    0x2e67(%rip),%r14
mov    0x2e80(%rip),%r15
mov    (%r15),%esi
or     (%r14),%esi
mov    0x2e63(%rip),%r12
or     (%r12),%esi
mov    0x2e70(%rip),%r13
or     0x0(%r13),%esi
mov    0x2e45(%rip),%rbx
or     (%rbx),%esi
mov    0x2e24(%rip),%rbp
or     0x0(%rbp),%esi
lea    0xe6a(%rip),%rdi
call   1050 <creat@plt>
test   %rax,%rax
jns    11ac <main+0x6c>
lea    0xe5d(%rip),%rdi
call   1030 <err_sys@plt>
mov    0x0(%r13),%edi
or     (%r12),%edi
or     (%rbx),%edi
or     0x0(%rbp),%edi
call   1040 <umask@plt>
mov    (%r15),%esi
or     (%r14),%esi
or     (%r12),%esi
or     0x0(%r13),%esi
or     (%rbx),%esi
or     0x0(%rbp),%esi
lea    0xe3e(%rip),%rdi
call   1050 <creat@plt>
test   %rax,%rax
jns    11ee <main+0xae>
lea    0xe31(%rip),%rdi
call   1030 <err_sys@plt>
xor    %edi,%edi
call   1060 <exit@plt>

LLVM IR (-O0):
@.str = [4 x i8] c"foo\00"
@S_IRUSR = global i32 0
@S_IWUSR = global i32 0
@S_IRGRP = global i32 0
@S_IWGRP = global i32 0
@S_IROTH = global i32 0
@S_IWOTH = global i32 0
@.str.1 = [18 x i8] c"creat foo error!\0A\00"
@.str.2 = [4 x i8] c"bar\00"
@.str.3 = [18 x i8] c"creat bar error!\0A\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @umask(i32 0)
%3 = load i32, i32* @S_IRUSR
%4 = load i32, i32* @S_IWUSR
%5 = or i32 %3, %4
%6 = load i32, i32* @S_IRGRP
%7 = or i32 %5, %6
%8 = load i32, i32* @S_IWGRP
%9 = or i32 %7, %8
%10 = load i32, i32* @S_IROTH
%11 = or i32 %9, %10
%12 = load i32, i32* @S_IWOTH
%13 = or i32 %11, %12
%14 = call i64 @creat(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %13)
%15 = icmp slt i64 %14, 0
br i1 %15, label %16, label %18
16: ; preds = %0
%17 = call i32 @err_sys(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0))
br label %18
18: ; preds = %16, %0
%19 = load i32, i32* @S_IRGRP
%20 = load i32, i32* @S_IWGRP
%21 = or i32 %19, %20
%22 = load i32, i32* @S_IROTH
%23 = or i32 %21, %22
%24 = load i32, i32* @S_IWOTH
%25 = or i32 %23, %24
%26 = call i32 @umask(i32 %25)
%27 = load i32, i32* @S_IRUSR
%28 = load i32, i32* @S_IWUSR
%29 = or i32 %27, %28
%30 = load i32, i32* @S_IRGRP
%31 = or i32 %29, %30
%32 = load i32, i32* @S_IWGRP
%33 = or i32 %31, %32
%34 = load i32, i32* @S_IROTH
%35 = or i32 %33, %34
%36 = load i32, i32* @S_IWOTH
%37 = or i32 %35, %36
%38 = call i64 @creat(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %37)
%39 = icmp slt i64 %38, 0
br i1 %39, label %40, label %42
40: ; preds = %18
%41 = call i32 @err_sys(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.3, i64 0, i64 0))
br label %42
42: ; preds = %40, %18
%43 = call i32 @exit(i32 0)
unreachable
}

LLVM IR (-O2):
@.str = [4 x i8] c"foo\00"
@S_IRUSR = global i32 0
@S_IWUSR = global i32 0
@S_IRGRP = global i32 0
@S_IWGRP = global i32 0
@S_IROTH = global i32 0
@S_IWOTH = global i32 0
@.str.1 = [18 x i8] c"creat foo error!\0A\00"
@.str.2 = [4 x i8] c"bar\00"
@.str.3 = [18 x i8] c"creat bar error!\0A\00"
define i32 @main() {
%1 = tail call i32 @umask(i32 0)
%2 = load i32, i32* @S_IRUSR
%3 = load i32, i32* @S_IWUSR
%4 = or i32 %3, %2
%5 = load i32, i32* @S_IRGRP
%6 = or i32 %4, %5
%7 = load i32, i32* @S_IWGRP
%8 = or i32 %6, %7
%9 = load i32, i32* @S_IROTH
%10 = or i32 %8, %9
%11 = load i32, i32* @S_IWOTH
%12 = or i32 %10, %11
%13 = tail call i64 @creat(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 %12)
%14 = icmp slt i64 %13, 0
br i1 %14, label %15, label %17
15: ; preds = %0
%16 = tail call i32 @err_sys(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.1, i64 0, i64 0))
br label %17
17: ; preds = %15, %0
%18 = load i32, i32* @S_IRGRP
%19 = load i32, i32* @S_IWGRP
%20 = or i32 %19, %18
%21 = load i32, i32* @S_IROTH
%22 = or i32 %20, %21
%23 = load i32, i32* @S_IWOTH
%24 = or i32 %22, %23
%25 = tail call i32 @umask(i32 %24)
%26 = load i32, i32* @S_IRUSR
%27 = load i32, i32* @S_IWUSR
%28 = or i32 %27, %26
%29 = load i32, i32* @S_IRGRP
%30 = or i32 %28, %29
%31 = load i32, i32* @S_IWGRP
%32 = or i32 %30, %31
%33 = load i32, i32* @S_IROTH
%34 = or i32 %32, %33
%35 = load i32, i32* @S_IWOTH
%36 = or i32 %34, %35
%37 = tail call i64 @creat(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0), i32 %36)
%38 = icmp slt i64 %37, 0
br i1 %38, label %39, label %41
39: ; preds = %17
%40 = tail call i32 @err_sys(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.3, i64 0, i64 0))
br label %41
41: ; preds = %39, %17
%42 = tail call i32 @exit(i32 0)
unreachable
}