#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__ {
  scalar_t__ tv_nsec;
  scalar_t__ tv_sec;
};
struct itimerspec {
  TYPE_2__ it_value;
  TYPE_1__ it_interval;
};

/* Variables and functions */
int /*<<< orphan*/ CLOCK_REALTIME;
int /*<<< orphan*/ SIGCONT;
int /*<<< orphan*/ SIGEV_SIGNAL;
int /*<<< orphan*/ perror(char *);
int /*<<< orphan*/ printf(char *, ...);
int /*<<< orphan*/ sleep(int);
scalar_t__ timer_create(int /*<<< orphan*/, struct sigevent *,
                        int /*<<< orphan*/ *);
scalar_t__ timer_gettime(int /*<<< orphan*/, struct itimerspec *);
scalar_t__ timer_settime(int /*<<< orphan*/, int /*<<< orphan*/,
                         struct itimerspec *, int /*<<< orphan*/ *);
int main(void) {
  struct sigevent ev;
  timer_t tid;
  struct itimerspec itsset, itsget;
  ev.sigev_notify = SIGEV_SIGNAL;
  ev.sigev_signo = SIGCONT;
  itsset.it_interval.tv_sec = 0;
  itsset.it_interval.tv_nsec = 0;
  itsset.it_value.tv_sec = 1;
  itsset.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, &itsset, NULL) != 0) {
    perror("timer_settime() did not return success\n");
    return 2;
  }
  sleep(1 + 1);
  if (timer_gettime(tid, &itsget) != 0) {
    perror("timer_gettime() did not return success\n");
    return 2;
  }
  if (0 == itsget.it_value.tv_sec && 0 == itsget.it_value.tv_nsec) {
    printf("Test PASSED\n");
    return 0;
  } else {
    printf("Test FAILED:  tv_sec %d tv_nsec %d\n", (int)itsget.it_value.tv_sec,
           (int)itsget.it_value.tv_nsec);
    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    0x2e6a(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0xc(%rbp)
mov    0x2e66(%rip),%rax
mov    (%rax),%eax
mov    %eax,-0x10(%rbp)
movq   $0x0,-0x20(%rbp)
movq   $0x0,-0x28(%rbp)
movl   $0x1,-0x38(%rbp)
movq   $0x0,-0x30(%rbp)
mov    0x2e23(%rip),%rax
mov    (%rax),%edi
lea    -0x10(%rbp),%rsi
lea    -0x14(%rbp),%rdx
call   1040 <timer_create@plt>
cmp    $0x0,%rax
je     11de <main+0x7e>
lea    0xe33(%rip),%rdi
call   1070 <perror@plt>
movl   $0x2,-0x4(%rbp)
jmp    1299 <main+0x139>
mov    -0x14(%rbp),%edi
xor    %esi,%esi
lea    -0x38(%rbp),%rdx
xor    %eax,%eax
mov    %eax,%ecx
call   1030 <timer_settime@plt>
cmp    $0x0,%rax
je     1212 <main+0xb2>
lea    0xe26(%rip),%rdi
call   1070 <perror@plt>
movl   $0x2,-0x4(%rbp)
jmp    1299 <main+0x139>
mov    $0x2,%edi
call   1080 <sleep@plt>
mov    -0x14(%rbp),%edi
lea    -0x58(%rbp),%rsi
call   1060 <timer_gettime@plt>
cmp    $0x0,%rax
je     124a <main+0xea>
lea    0xe16(%rip),%rdi
call   1070 <perror@plt>
movl   $0x2,-0x4(%rbp)
jmp    1299 <main+0x139>
xor    %eax,%eax
cmp    -0x58(%rbp),%eax
jne    127b <main+0x11b>
xor    %eax,%eax
cmp    -0x50(%rbp),%rax
jne    127b <main+0x11b>
lea    0xe0f(%rip),%rdi
mov    $0x0,%al
call   1050 <printf@plt>
movl   $0x0,-0x4(%rbp)
jmp    1299 <main+0x139>
mov    -0x58(%rbp),%esi
mov    -0x50(%rbp),%rax
mov    %eax,%edx
lea    0xdf9(%rip),%rdi
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>:
push   %rbx
sub    $0x50,%rsp
mov    0x2e64(%rip),%rax
mov    (%rax),%eax
mov    %eax,0xc(%rsp)
mov    0x2e5f(%rip),%rax
mov    (%rax),%eax
mov    %eax,0x8(%rsp)
xorps  %xmm0,%xmm0
movups %xmm0,0x20(%rsp)
movl   $0x1,0x10(%rsp)
movq   $0x0,0x18(%rsp)
mov    0x2e21(%rip),%rax
mov    (%rax),%edi
lea    0x8(%rsp),%rsi
lea    0x4(%rsp),%rdx
call   1050 <timer_create@plt>
test   %rax,%rax
jne    1235 <main+0xc5>
mov    0x4(%rsp),%edi
lea    0x10(%rsp),%rdx
xor    %esi,%esi
xor    %ecx,%ecx
call   1030 <timer_settime@plt>
test   %rax,%rax
jne    123e <main+0xce>
mov    $0x2,%ebx
mov    $0x2,%edi
call   1090 <sleep@plt>
mov    0x4(%rsp),%edi
lea    0x30(%rsp),%rsi
call   1070 <timer_gettime@plt>
test   %rax,%rax
jne    1251 <main+0xe1>
mov    0x30(%rsp),%esi
mov    0x38(%rsp),%rdx
test   %esi,%esi
jne    1220 <main+0xb0>
test   %rdx,%rdx
jne    1220 <main+0xb0>
lea    0xe84(%rip),%rdi
call   1040 <puts@plt>
xor    %ebx,%ebx
jmp    125d <main+0xed>
lea    0xe50(%rip),%rdi
xor    %eax,%eax
call   1060 <printf@plt>
mov    $0x1,%ebx
jmp    125d <main+0xed>
lea    0xdc4(%rip),%rdi
jmp    1245 <main+0xd5>
lea    0xde2(%rip),%rdi
call   1080 <perror@plt>
mov    $0x2,%ebx
jmp    125d <main+0xed>
lea    0xdf7(%rip),%rdi
call   1080 <perror@plt>
mov    %ebx,%eax
add    $0x50,%rsp
pop    %rbx
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 { i64, 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 = [40 x i8] c"timer_gettime() did not return success\0A\00"
@.str.3 = [13 x i8] c"Test PASSED\0A\00"
@.str.4 = [36 x i8] c"Test FAILED: tv_sec %d tv_nsec %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 1
%11 = getelementptr inbounds %struct.TYPE_3__, %struct.TYPE_3__* %10, i32 0, i32 1
store i64 0, i64* %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 i64 0, i64* %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 0
store i32 1, i32* %15
%16 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i32 0, i32 0
%17 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %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 %57
23: ; preds = %0
%24 = load i32, i32* %3
%25 = call i64 @timer_settime(i32 %24, i32 0, %struct.itimerspec* %4, i32* null)
%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 %57
29: ; preds = %23
%30 = call i32 @sleep(i32 2)
%31 = load i32, i32* %3
%32 = call i64 @timer_gettime(i32 %31, %struct.itimerspec* %5)
%33 = icmp ne i64 %32, 0
br i1 %33, label %34, label %36
34: ; preds = %29
%35 = call i32 @perror(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.2, i64 0, i64 0))
store i32 2, i32* %1
br label %57
36: ; preds = %29
%37 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %5, i32 0, i32 0
%38 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %37, i32 0, i32 0
%39 = load i32, i32* %38
%40 = icmp eq i32 0, %39
br i1 %40, label %41, label %48
41: ; preds = %36
%42 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %5, i32 0, i32 0
%43 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %42, i32 0, i32 1
%44 = load i64, i64* %43
%45 = icmp eq i64 0, %44
br i1 %45, label %46, label %48
46: ; preds = %41
%47 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.3, i64 0, i64 0))
store i32 0, i32* %1
br label %57
48: ; preds = %41, %36
%49 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %5, i32 0, i32 0
%50 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %49, i32 0, i32 0
%51 = load i32, i32* %50
%52 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %5, i32 0, i32 0
%53 = getelementptr inbounds %struct.TYPE_4__, %struct.TYPE_4__* %52, i32 0, i32 1
%54 = load i64, i64* %53
%55 = trunc i64 %54 to i32
%56 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([36 x i8], [36 x i8]* @.str.4, i64 0, i64 0), i32 %51, i32 %55)
store i32 1, i32* %1
br label %57
57: ; preds = %48, %46, %34, %27, %21
%58 = load i32, i32* %1
ret i32 %58
}

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 { i64, 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 = [40 x i8] c"timer_gettime() did not return success\0A\00"
@.str.4 = [36 x i8] c"Test FAILED: tv_sec %d tv_nsec %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 1, i32 0
%14 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %3, i64 0, i32 0, i32 0
%15 = bitcast i64* %13 to i8*
store i32 1, i32* %14
%16 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %3, i64 0, i32 0, 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 %48
22: ; preds = %0
%23 = load i32, i32* %2
%24 = call i64 @timer_settime(i32 %23, i32 0, %struct.itimerspec* %3, i32* null)
%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 %48
28: ; preds = %22
%29 = call i32 @sleep(i32 2)
%30 = load i32, i32* %2
%31 = call i64 @timer_gettime(i32 %30, %struct.itimerspec* %4)
%32 = icmp eq i64 %31, 0
br i1 %32, label %35, label %33
33: ; preds = %28
%34 = call i32 @perror(i8* getelementptr inbounds ([40 x i8], [40 x i8]* @.str.2, i64 0, i64 0))
br label %48
35: ; preds = %28
%36 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i64 0, i32 0, i32 0
%37 = load i32, i32* %36
%38 = icmp eq i32 %37, 0
%39 = getelementptr inbounds %struct.itimerspec, %struct.itimerspec* %4, i64 0, i32 0, i32 1
%40 = load i64, i64* %39
%41 = icmp eq i64 %40, 0
%42 = select i1 %38, i1 %41, i1 false
br i1 %42, label %43, label %45
43: ; preds = %35
%44 = call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([12 x i8], [12 x i8]* @str, i64 0, i64 0))
br label %48
45: ; preds = %35
%46 = trunc i64 %40 to i32
%47 = call i32 (i8*, ...) @printf(i8* dereferenceable(1) getelementptr inbounds ([36 x i8], [36 x i8]* @.str.4, i64 0, i64 0), i32 %37, i32 %46)
br label %48
48: ; preds = %45, %43, %33, %26, %20
%49 = phi i32 [ 2, %20 ], [ 2, %26 ], [ 2, %33 ], [ 0, %43 ], [ 1, %45 ]
ret i32 %49
}