#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 */
typedef struct TYPE_4__ TYPE_2__;
typedef struct TYPE_3__ TYPE_1__;

/* Type definitions */
typedef int /*<<< orphan*/ timer_t;
struct sigevent {
  int /*<<< orphan*/ sigev_signo;
  int /*<<< orphan*/ sigev_notify;
};
struct TYPE_4__ {
  int tv_sec;
  scalar_t__ tv_nsec;
};
struct TYPE_3__ {
  int tv_sec;
  scalar_t__ tv_nsec;
};
struct itimerspec {
  TYPE_2__ it_interval;
  TYPE_1__ it_value;
};

/* Variables and functions */
int /*<<< orphan*/ CLOCK_REALTIME;
int /*<<< orphan*/ SIGCONT;
int /*<<< orphan*/ SIGEV_SIGNAL;
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ printf(char *, ...);
scalar_t__ timer_create(int /*<<< orphan*/, struct sigevent *,
                        int /*<<< orphan*/ *);
scalar_t__ timer_settime(int /*<<< orphan*/, int /*<<< orphan*/,
                         struct itimerspec *, struct itimerspec *);
int main(void) {
  struct sigevent ev;
  timer_t tid;
  struct itimerspec its, oits;
  ev.sigev_notify = SIGEV_SIGNAL;
  ev.sigev_signo = SIGCONT;
  its.it_interval.tv_sec = 8;
  its.it_value.tv_sec = 1;
  its.it_interval.tv_nsec = 0;
  its.it_value.tv_nsec = 0;
  if (timer_create(CLOCK_REALTIME, &ev, &tid) != 0) {
    perror("timer_create() did not return success\n");
    return 2;
  }
  if (timer_settime(tid, 0, &its, &oits) != 0) {
    perror("timer_settime() did not return success\n");
    return 2;
  }
  if (timer_settime(tid, 0, &its, &oits) != 0) {
    perror("timer_settime() did not return success\n");
    return 2;
  }
  if (8 == oits.it_interval.tv_sec) {
    printf("Test PASSED\n");
    return 0;
  } else {
    printf("Test FAILED:  correct %d oits.it_interval %d\n", 8,
           (int)oits.it_interval.tv_sec);
    return 1;
  }
  printf("This code should not be executed.\n");
  return 2;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x60,%rsp
movl   $0x0,-0x4(%rbp)
mov    0x2e8a(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0xc(%rbp)
mov    0x2e86(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x10(%rbp)
movl   $0x8,-0x38(%rbp)
movl   $0x1,-0x28(%rbp)
movq   $0x0,-0x30(%rbp)
movq   $0x0,-0x20(%rbp)
mov    0x2e44(%rip),%rax
mov    (%rax),%edi
lea    -0x10(%rbp),%rsi
lea    -0x14(%rbp),%rdx
call   1040 <timer_create@plt>
cmp    $0x0,%rax
je     11bd <main+0x7d>
lea    0xe54(%rip),%rdi
call   1060 <perror@plt>
movl   $0x2,-0x4(%rbp)
jmp    126a <main+0x12a>
mov    -0x14(%rbp),%edi
xor    %esi,%esi
lea    -0x38(%rbp),%rdx
lea    -0x58(%rbp),%rcx
call   1030 <timer_settime@plt>
cmp    $0x0,%rax
je     11f1 <main+0xb1>
lea    0xe47(%rip),%rdi
call   1060 <perror@plt>
movl   $0x2,-0x4(%rbp)
jmp    126a <main+0x12a>
mov    -0x14(%rbp),%edi
xor    %esi,%esi
lea    -0x38(%rbp),%rdx
lea    -0x58(%rbp),%rcx
call   1030 <timer_settime@plt>
cmp    $0x0,%rax
je     1225 <main+0xe5>
lea    0xe13(%rip),%rdi
call   1060 <perror@plt>
movl   $0x2,-0x4(%rbp)
jmp    126a <main+0x12a>
mov    $0x8,%eax
cmp    -0x58(%rbp),%eax
jne    124d <main+0x10d>
lea    0xe15(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
movl   $0x0,-0x4(%rbp)
jmp    126a <main+0x12a>
mov    -0x58(%rbp),%edx
lea    0xe05(%rip),%rdi
mov    $0x8,%esi
mov    $0x0,%al
call   1050 <printf@plt>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x60,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
sub    $0x58,%rsp
mov    0x2e85(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x14(%rsp)
mov    0x2e80(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x10(%rsp)
movl   $0x8,0x18(%rsp)
movl   $0x1,0x28(%rsp)
movq   $0x0,0x20(%rsp)
movq   $0x0,0x30(%rsp)
mov    0x2e39(%rip),%rax
mov    (%rax),%edi
lea    0x10(%rsp),%rsi
lea    0xc(%rsp),%rdx
call   1050 <timer_create@plt>
test   %rax,%rax
jne    1223 <main+0xd3>
mov    0xc(%rsp),%edi
lea    0x18(%rsp),%rdx
lea    0x38(%rsp),%rcx
xor    %esi,%esi
call   1030 <timer_settime@plt>
test   %rax,%rax
jne    121a <main+0xca>
mov    0xc(%rsp),%edi
lea    0x18(%rsp),%rdx
lea    0x38(%rsp),%rcx
xor    %esi,%esi
call   1030 <timer_settime@plt>
test   %rax,%rax
jne    121a <main+0xca>
mov    0x38(%rsp),%edx
cmp    $0x8,%edx
jne    11fd <main+0xad>
lea    0xe8c(%rip),%rdi
call   1040 <puts@plt>
xor    %eax,%eax
add    $0x58,%rsp
ret
lea    0xe4b(%rip),%rdi
mov    $0x8,%esi
xor    %eax,%eax
call   1060 <printf@plt>
mov    $0x1,%eax
add    $0x58,%rsp
ret
lea    0xe06(%rip),%rdi
jmp    122a <main+0xda>
lea    0xdd6(%rip),%rdi
call   1070 <perror@plt>
mov    $0x2,%eax
add    $0x58,%rsp
ret

LLVM IR (-O0):
%struct.sigevent = type { i32, i32 }
%struct.itimerspec = type { %struct.TYPE_4__, %struct.TYPE_3__ }
%struct.TYPE_4__ = type { i32, i64 }
%struct.TYPE_3__ = type { i32, i64 }
@SIGEV_SIGNAL = global i32 0
@SIGCONT = global i32 0
@CLOCK_REALTIME = global i32 0
@.str = [39 x i8] c"timer_create() did not return success\0A\00"
@.str.1 = [40 x i8] c"timer_settime() did not return success\0A\00"
@.str.2 = [13 x i8] c"Test PASSED\0A\00"
@.str.3 = [46 x i8] c"Test FAILED: correct %d oits.it_interval %d\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca %struct.sigevent
%3 = alloca i32
%4 = alloca %struct.itimerspec
%5 = alloca %struct.itimerspec
store i32 0, i32* %1
%6 = load i32, i32* @SIGEV_SIGNAL
%7 = getelementptr inbounds %struct.sigevent, %struct.sigevent* %2, i32 0, i32 1
store i32 %6, i32* %7
%8 = load i32, i32* @SIGCONT
%9 = getelementptr inbounds %struct.sigevent, %struct.sigevent* %2, i32 0, i32 0
store i32 %8, i32* %9
%10 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i32 0, i32 0
%11 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %10, i32 0, i32 0
store i32 8, i32* %11
%12 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i32 0, i32 1
%13 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %12, i32 0, i32 0
store i32 1, i32* %13
%14 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i32 0, i32 0
%15 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %14, i32 0, i32 1
store i64 0, i64* %15
%16 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i32 0, i32 1
%17 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %16, i32 0, i32 1
store i64 0, i64* %17
%18 = load i32, i32* @CLOCK_REALTIME
%19 = call i64 @timer_create(i32 %18, %struct.sigevent* %2, i32* %3)
%20 = icmp ne i64 %19, 0
br i1 %20, label %21, label %23
21: ; preds = %0
%22 = call i32 @perror(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str, i64 0, i64 0))
store i32 2, i32* %1
br label %47
23: ; preds = %0
%24 = load i32, i32* %3
%25 = call i64 @timer_settime(i32 %24, i32 0, %struct.itimerspec* %4, %struct.itimerspec* %5)
%26 = icmp ne i64 %25, 0
br i1 %26, label %27, label %29
27: ; preds = %23
%28 = call i32 @perror(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.1, i64 0, i64 0))
store i32 2, i32* %1
br label %47
29: ; preds = %23
%30 = load i32, i32* %3
%31 = call i64 @timer_settime(i32 %30, i32 0, %struct.itimerspec* %4, %struct.itimerspec* %5)
%32 = icmp ne i64 %31, 0
br i1 %32, label %33, label %35
33: ; preds = %29
%34 = call i32 @perror(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.1, i64 0, i64 0))
store i32 2, i32* %1
br label %47
35: ; preds = %29
%36 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %5, i32 0, i32 0
%37 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %36, i32 0, i32 0
%38 = load i32, i32* %37
%39 = icmp eq i32 8, %38
br i1 %39, label %40, label %42
40: ; preds = %35
%41 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.2, i64 0, i64 0))
store i32 0, i32* %1
br label %47
42: ; preds = %35
%43 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %5, i32 0, i32 0
%44 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %43, i32 0, i32 0
%45 = load i32, i32* %44
%46 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([46 x i8], [46 x i8]* @.str.3, i64 0, i64 0), i32 8, i32 %45)
store i32 1, i32* %1
br label %47
47: ; preds = %42, %40, %33, %27, %21
%48 = load i32, i32* %1
ret i32 %48
}

LLVM IR (-O2):
%struct.sigevent = type { i32, i32 }
%struct.itimerspec = type { %struct.TYPE_4__, %struct.TYPE_3__ }
%struct.TYPE_4__ = type { i32, i64 }
%struct.TYPE_3__ = type { i32, i64 }
@SIGEV_SIGNAL = global i32 0
@SIGCONT = global i32 0
@CLOCK_REALTIME = global i32 0
@.str = [39 x i8] c"timer_create() did not return success\0A\00"
@.str.1 = [40 x i8] c"timer_settime() did not return success\0A\00"
@.str.3 = [46 x i8] c"Test FAILED: correct %d oits.it_interval %d\0A\00"
@str = [12 x i8] c"Test PASSED\00"
define i32 @main() {
%1 = alloca %struct.sigevent
%2 = alloca i32
%3 = alloca %struct.itimerspec
%4 = alloca %struct.itimerspec
%5 = bitcast %struct.sigevent* %1 to i8*
%6 = bitcast i32* %2 to i8*
%7 = bitcast %struct.itimerspec* %3 to i8*
%8 = bitcast %struct.itimerspec* %4 to i8*
%9 = load i32, i32* @SIGEV_SIGNAL
%10 = getelementptr inbounds %struct.sigevent, %struct.sigevent* %1, i64 0, i32 1
store i32 %9, i32* %10
%11 = load i32, i32* @SIGCONT
%12 = getelementptr inbounds %struct.sigevent, %struct.sigevent* %1, i64 0, i32 0
store i32 %11, i32* %12
%13 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %3, i64 0, i32 0, i32 0
store i32 8, i32* %13
%14 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %3, i64 0, i32 1, i32 0
store i32 1, i32* %14
%15 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %3, i64 0, i32 0, i32 1
store i64 0, i64* %15
%16 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %3, i64 0, i32 1, i32 1
store i64 0, i64* %16
%17 = load i32, i32* @CLOCK_REALTIME
%18 = call i64 @timer_create(i32 %17, %struct.sigevent* %1, i32* %2)
%19 = icmp eq i64 %18, 0
br i1 %19, label %22, label %20
20: ; preds = %0
%21 = call i32 @perror(i8* getelementptr inbounds ([39 x i8], [39 x i8]* @.str, i64 0, i64 0))
br label %42
22: ; preds = %0
%23 = load i32, i32* %2
%24 = call i64 @timer_settime(i32 %23, i32 0, %struct.itimerspec* %3, %struct.itimerspec* %4)
%25 = icmp eq i64 %24, 0
br i1 %25, label %28, label %26
26: ; preds = %22
%27 = call i32 @perror(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.1, i64 0, i64 0))
br label %42
28: ; preds = %22
%29 = load i32, i32* %2
%30 = call i64 @timer_settime(i32 %29, i32 0, %struct.itimerspec* %3, %struct.itimerspec* %4)
%31 = icmp eq i64 %30, 0
br i1 %31, label %34, label %32
32: ; preds = %28
%33 = call i32 @perror(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.1, i64 0, i64 0))
br label %42
34: ; preds = %28
%35 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i64 0, i32 0, i32 0
%36 = load i32, i32* %35
%37 = icmp eq i32 %36, 8
br i1 %37, label %38, label %40
38: ; preds = %34
%39 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @str, i64 0, i64 0))
br label %42
40: ; preds = %34
%41 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([46 x i8], [46 x i8]* @.str.3, i64 0, i64 0), i32 8, i32 %36)
br label %42
42: ; preds = %40, %38, %32, %26, %20
%43 = phi i32 [ 2, %20 ], [ 2, %26 ], [ 2, %32 ], [ 0, %38 ], [ 1, %40 ]
ret i32 %43
}