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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
using System;
using System.Diagnostics;
using System.Runtime.CompilerServices;
class Runtime_1104
{
static int TestOutOfBoundProxy(Func<int> actualTest)
{
try
{
actualTest();
}
catch (IndexOutOfRangeException)
{
Console.WriteLine("caught IndexOutOfRangeException");
return 100;
}
Debug.Fail("unreached");
return 101;
}
[MethodImpl(MethodImplOptions.NoInlining)]
static int TestOutOfBoundLowerDecreasing()
{
int[] arr = new int[10];
int i = 9;
int j = 15;
int sum = 0;
// our range check optimizer is very naive, so if you don't have
// i < 10, then it thinks `i` can overflow and doesn't bother
// calling `Widen` at all.
//
while (j >= 0 && i < 10)
{
--j;
--i;
sum += arr[i]; // range check will use 9 as lower bound.
Console.WriteLine("i = " + i + ", j = " + j);
}
return sum;
}
public static int Main()
{
try
{
TestOutOfBoundProxy(TestOutOfBoundLowerDecreasing);
}
catch (Exception)
{
return 101;
}
return 100;
}
}
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