unreachable-code Questions
9
Solved
I have this simple piece of code:
public static int GetInt(int number)
{
int[] ints = new int[]{ 3, 7, 9, int.MaxValue };
foreach (int i in ints)
if (number <= i)
return i;
return int.Max...
Alric asked 6/6, 2013 at 15:45
3
Solved
I tried the following in Eclipse:
if (false) {}: warning 'dead code'
while (false) {}: compilation error 'unreachable code'
I was wondering whether there is a real 'reason' for this difference....
Washbowl asked 30/11, 2013 at 11:54
2
Solved
Consider the following Rust code:
fn f() -> i32 {
loop {
println!("Infinite loop!");
}
println!("Unreachable");
}
This compiles (with a warning) and runs, despite the fact that the return...
Berberine asked 21/2, 2020 at 1:19
9
Solved
This code is part of an application that reads from and writes to an ODBC connected database. It creates a record in the database and then checks if a record has been successfully created, then ret...
Haystack asked 12/3, 2019 at 8:17
2
Solved
I have a tagged type that implements a number of functions. In one case I need one of these functions to instead enter an infinite loop. Unfortunately as far as I can tell there is no way for me to...
Acetum asked 18/2, 2019 at 20:31
4
Solved
It's common for compilers to provide a switch to warn when code is unreachable. I've also seen macros for some libraries, that provide assertions for unreachable code.
Is there a hint, such as thr...
Callen asked 1/8, 2010 at 9:54
4
Solved
I found a case where I have some code that I believe to be unreachable and is not detected.
No warning is issued neither by the compiler nor by Visual Studio.
Consider this code:
enum Foo { A, B,...
Rosebud asked 13/4, 2018 at 8:7
6
Solved
I suppose the easiest way to explain is by a contrived example:
public static int Fail() {
var b = true;
if (b) {
return 0;
}
}
This code will not compile, and gives the error "not all code ...
Constantino asked 24/8, 2013 at 22:52
2
Solved
unreachable code is compile time error in languages like Java. But why it is just warning in C++ & C?
Consider following example:
#include <iostream>
int f()
{
int a=3;
return a;
int...
Ceceliacecil asked 26/5, 2015 at 11:24
2
I have the following code
switch (attr.templateType) {
case 'text': return tpl_default; break;
case 'currency': return tpl_currency; break;
case 'percentage': return tpl_percentage; break;
c...
Goldarn asked 5/7, 2017 at 1:46
8
Solved
Consider the following statement:
*((char*)NULL) = 0; //undefined behavior
It clearly invokes undefined behavior. Does the existence of such a statement in a given program mean that the whole pr...
Bilbao asked 18/4, 2014 at 11:44
3
Solved
How should I understand this Java compiler behaviour?
while (true) return;
System.out.println("I love Java");
// Err: unreachable statement
if (true) return;
System.out.println("I hate Java...
Scanty asked 11/2, 2017 at 12:55
8
Solved
Does anyone know why:
public void foo()
{
System.out.println("Hello");
return;
System.out.println("World!");
}
Would be reported as an "unreachable error" under Eclipse, but
public void foo(...
Blevins asked 26/1, 2010 at 17:1
1
Solved
Why is this code not giving an "unreachable code" error? Since a boolean can only be true or false.
public static void main(String args[]) {
boolean a = false;
if (a == true) {
} else if (a =...
Turbit asked 18/3, 2016 at 14:6
5
Solved
If I try to compile
for(;;)
{
}
System.out.println("End");
The Java compiler produces an error saying Unreachable statement. But if I add another "unreachable"(according to me) break statement...
Housework asked 24/12, 2015 at 13:30
3
Research following method:
static private void foo() {
try {
throw new FileNotFoundException();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStac...
Cressler asked 2/9, 2014 at 13:14
5
I get a whole lot of warnings about switches that only partially covers the range of an enumeration switched over. Therefor, I would like to have a "default" for all those switches and put __builti...
Luxurious asked 17/5, 2011 at 13:52
6
class For1
{
public static void main(String args[])
{
int a = 0;
for(;;)
{
break;
System.out.println(a); //Line 1
++a;//Line 2
}
}
}
I know that Line 1/Line 2 will never be execut...
Terzas asked 19/8, 2013 at 7:6
1
Solved
I'm trying to figure out if there's any way to avoid getting an "Unreachable code" warning for something that's caused by the preprocessor. I don't want to suppress all such warnings, only those wh...
Footloose asked 26/7, 2013 at 21:7
4
Solved
I have following code:
private const FlyCapture2Managed.PixelFormat f7PF = FlyCapture2Managed.PixelFormat.PixelFormatMono16;
public PGRCamera(ExamForm input, bool red, int flags, int drawWidth, i...
Fizgig asked 1/7, 2013 at 10:15
5
Solved
I'm getting a "Unreachable code detected" message in Visual Studio at the point i++ in my code below. Can you spot what I've done wrong?
try
{
RegistryKey OurKey = Registry.CurrentUser;
OurKey.C...
Helainehelali asked 25/9, 2009 at 9:56
3
Solved
Inspired from a -5 question again!
Is empty case of switch in C# combined with the next non-empty one?
I read [this comment] of @Quartermeister and been astonished!
So why this compiles
switc...
Lonna asked 7/3, 2013 at 20:32
1
Solved
Inspired from question
What is a non-reachable end point(unreachable endpoint) of a statement?
And before I ask this question, I've read:
C# Puzzle : Reachable goto pointing to an unreachabl...
Regan asked 4/3, 2013 at 23:28
4
Solved
I'm working on an application built with VC9 and I've hit upon a warning I don't fully understand: why is there an "unreachable code" warning on the closing brace of the constructor?
The minimal t...
Aggie asked 30/5, 2012 at 14:39
3
Solved
Does compiler compile "Unreachable Codes" in MSIL or Native code in run time?
Dame asked 27/12, 2011 at 11:10
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