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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;
// This test is used to try out very large decrementing loop strides. The strides cannot be negated if the integer
// is too large. For example, a stride of 0xA0000000 cannot be turned into a signed number. For the most
// part, other things prevent us from getting to OSR with a condition like this but it's good to have
// coverage for large strides.
public class StrideTest
{
public static int Main()
{
bool pass = true;
pass &= Test1();
pass &= Test2();
pass &= Test3();
return (pass ? 100 : 1);
}
public static bool Test1()
{
try
{
uint[] array = new uint[0x8ffffff];
for (uint i = 0x8fffffe; true; i -= 0xa0000001)
{
array[i] = 40;
}
}
catch (IndexOutOfRangeException)
{
return true;
}
catch (Exception e)
{
Console.WriteLine("test1 exception: {0}", e.ToString());
}
Console.WriteLine("Test1 failed");
return false;
}
public static bool Test2()
{
try
{
uint[] array = new uint[0x8ffffff];
for (uint i = 0; true; i -= 0xa0a0a0a0)
{
array[i] = i;
}
}
catch (IndexOutOfRangeException)
{
return true;
}
catch (Exception e)
{
Console.WriteLine("test2 exception: {0}", e.ToString());
}
Console.WriteLine("Test2 failed");
return false;
}
public static bool Test3()
{
try
{
int[] array = new int[0x8ffffff];
for (long i = 0x8ffffffL - 1; i > 0x8ffffffL - 0xa0a0a0a0L - 1000; i -= 0xa0a0a0a0L)
{
array[i] = (int)i;
}
}
catch (IndexOutOfRangeException)
{
return true;
}
catch (OverflowException)
{
// This could potentially produce an overflow exception on x86 when calculating
// address offset.
return true;
}
catch (Exception e)
{
Console.WriteLine("test3 exception: {0}", e.ToString());
}
Console.WriteLine("Test3 failed");
return false;
}
public static bool Test4()
{
try
{
ulong[] array = new ulong[0xfffffff];
ulong i = 0xa000000000000002;
while (true)
{
i -= 0xa000000000000001;
array[i] = i;
}
}
catch (IndexOutOfRangeException)
{
return true;
}
catch (Exception) { }
Console.WriteLine("Test4 failed");
return false;
}
public static bool Test5()
{
try
{
ulong[] array = new ulong[0xfffffff];
ulong i = 0xa000000000000010;
while (true)
{
i -= 0xa000000000000001;
while (i >= 0)
{
array[i] = i;
i -= 1;
}
array[i] = i;
}
}
catch (IndexOutOfRangeException)
{
return true;
}
catch (Exception) { }
Console.WriteLine("Test5 failed");
return false;
}
}
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