Add a regression test for VSO 284785.

Just what it says on the tin.

Commit migrated from https://github.com/dotnet/coreclr/commit/f7162812f4b53184588c7b8cb2fe4d1f6c371e7c

diff --git a/src/coreclr/tests/src/JIT/Regression/JitBlue/DevDiv_284785/DevDiv_284785.cs b/src/coreclr/tests/src/JIT/Regression/JitBlue/DevDiv_284785/DevDiv_284785.cs
new file mode 100644 (file)
index 0000000..944993f
--- /dev/null
+++ b/src/coreclr/tests/src/JIT/Regression/JitBlue/DevDiv_284785/DevDiv_284785.cs
@@ -0,0 +1,39 @@
+// 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.
+
+// This test exercises expression folding in the place of overflowing operations. The original failure was SBCG due to
+// an incorrect application of the same: in the program below, the checked int -> ulong cast on line 24 was folded to a
+// long -> ulong cast with an incorrect constant value that fit in a ulong, resulting in no overflow exception being
+// thrown.
+
+using System;
+
+static class C
+{
+    static int Main()
+    {
+        int i = -4;
+        ulong l = 0;
+
+        int rv = 0;
+        try
+        {
+            checked
+            {
+                l = (ulong)i;
+            }
+        }
+        catch (OverflowException)
+        {
+            rv = 100;
+        }
+        catch (Exception)
+        {
+            i = 0;
+            l = 0;
+        }
+
+        return rv;
+    }
+}

diff --git a/src/coreclr/tests/src/JIT/Regression/JitBlue/DevDiv_284785/DevDiv_284785.csproj b/src/coreclr/tests/src/JIT/Regression/JitBlue/DevDiv_284785/DevDiv_284785.csproj
new file mode 100644 (file)
index 0000000..d27b911
--- /dev/null
+++ b/src/coreclr/tests/src/JIT/Regression/JitBlue/DevDiv_284785/DevDiv_284785.csproj
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.props))\dir.props" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <AssemblyName>$(MSBuildProjectName)</AssemblyName>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{95DFC527-4DC1-495E-97D7-E94EE1F7140D}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{786C830F-07A1-408B-BD7F-6EE04809D6DB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\11.0\UITestExtensionPackages</ReferencePath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\..\</SolutionDir>
+
+    <NuGetPackageImportStamp>7a9bfb7d</NuGetPackageImportStamp>
+  </PropertyGroup>
+  <!-- Default configurations to help VS understand the configurations -->
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
+  <ItemGroup>
+    <CodeAnalysisDependentAssemblyPaths Condition=" '$(VS100COMNTOOLS)' != '' " Include="$(VS100COMNTOOLS)..\IDE\PrivateAssemblies">
+      <Visible>False</Visible>
+    </CodeAnalysisDependentAssemblyPaths>
+  </ItemGroup>
+  <PropertyGroup>
+    <DebugType></DebugType>
+    <Optimize>True</Optimize>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="DevDiv_284785.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
+  </ItemGroup>
+  <PropertyGroup>
+    <ProjectJson>$(JitPackagesConfigFileDirectory)minimal\project.json</ProjectJson>
+    <ProjectLockJson>$(JitPackagesConfigFileDirectory)minimal\project.lock.json</ProjectLockJson>
+  </PropertyGroup>
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
+  <PropertyGroup Condition=" '$(MsBuildProjectDirOverride)' != '' ">
+  </PropertyGroup> 
+</Project>