diff options
author | Julien Couvreur <jcouv@users.noreply.github.com> | 2017-11-16 22:07:51 +0300 |
---|---|---|
committer | Jan Kotas <jkotas@microsoft.com> | 2017-11-16 22:07:51 +0300 |
commit | cfd5af4605645e38ce23eeb6ebf3f04abd4f83ac (patch) | |
tree | 80515bd259306003742b9a047cc0f15a2dd5e32a /src/ILVerify | |
parent | 7f651b7f315344da384b0da7d99f378d89dcdadf (diff) |
Fix direction of variance check in delegate assignment (#4945)
* Fix direction of variance check in delegate assignment
* Add tests
Diffstat (limited to 'src/ILVerify')
-rw-r--r-- | src/ILVerify/src/ILImporter.Verify.cs | 4 | ||||
-rw-r--r-- | src/ILVerify/src/ILVerify.csproj | 1 | ||||
-rw-r--r-- | src/ILVerify/tests/ILMethodTester.cs | 4 | ||||
-rw-r--r-- | src/ILVerify/tests/ILTests/DelegateTests.il | 55 |
4 files changed, 61 insertions, 3 deletions
diff --git a/src/ILVerify/src/ILImporter.Verify.cs b/src/ILVerify/src/ILImporter.Verify.cs index 025d24756..ee9215a79 100644 --- a/src/ILVerify/src/ILImporter.Verify.cs +++ b/src/ILVerify/src/ILImporter.Verify.cs @@ -1003,12 +1003,12 @@ again: for (int i = 0; i < ftnSignature.Length; i++) { - if (!IsAssignable(ftnSignature[i], delegateSignature[i])) + if (!IsAssignable(delegateSignature[i], ftnSignature[i])) return false; } // Compare return type - return IsAssignable(delegateSignature.ReturnType, ftnSignature.ReturnType); + return IsAssignable(ftnSignature.ReturnType, delegateSignature.ReturnType); } ILOpcode GetOpcodeAt(int instructionOffset) diff --git a/src/ILVerify/src/ILVerify.csproj b/src/ILVerify/src/ILVerify.csproj index d07d962fa..27ce4fc9e 100644 --- a/src/ILVerify/src/ILVerify.csproj +++ b/src/ILVerify/src/ILVerify.csproj @@ -3,6 +3,7 @@ <PropertyGroup> <OutputType>Exe</OutputType> <TargetFrameworks>netcoreapp2.0;net46</TargetFrameworks> + <PlatformTarget>AnyCPU</PlatformTarget> <CLSCompliant>false</CLSCompliant> <AllowUnsafeBlocks>true</AllowUnsafeBlocks> <EnableDefaultCompileItems>false</EnableDefaultCompileItems> diff --git a/src/ILVerify/tests/ILMethodTester.cs b/src/ILVerify/tests/ILMethodTester.cs index 1d5eeda16..671bd3f91 100644 --- a/src/ILVerify/tests/ILMethodTester.cs +++ b/src/ILVerify/tests/ILMethodTester.cs @@ -4,6 +4,7 @@ using System; using System.Collections.Generic; +using System.Linq; using System.Reflection.Metadata.Ecma335; using Internal.IL; using Internal.TypeSystem.Ecma; @@ -60,7 +61,8 @@ namespace ILVerify.Tests foreach (var item in invalidIL.ExpectedVerifierErrors) { - Assert.True(verifierErrors.Contains(item)); + var actual = verifierErrors.Select(e => e.ToString()); + Assert.True(verifierErrors.Contains(item), $"Actual errors where: {string.Join(',', actual)}"); } } } diff --git a/src/ILVerify/tests/ILTests/DelegateTests.il b/src/ILVerify/tests/ILTests/DelegateTests.il new file mode 100644 index 000000000..97a827825 --- /dev/null +++ b/src/ILVerify/tests/ILTests/DelegateTests.il @@ -0,0 +1,55 @@ +// 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. + +.assembly extern System.Runtime +{ +} + +.assembly DelegateTests +{ +} + +.class private auto ansi beforefieldinit C + extends [System.Runtime]System.Object +{ + // assignment from Func<int, string> to Func<int, object> is valid + .method private hidebysig instance class [System.Runtime]System.Func`2<int32,object> + DelegateAssignmentReturn_Valid(class [System.Runtime]System.Func`2<int32,string> input) cil managed + { + ldarg.1 + ret + } + + // assignment from Func<object, int> to Func<string, int> is valid + .method private hidebysig instance class [System.Runtime]System.Func`2<string,int32> + DelegateAssignmentParameter_Valid(class [System.Runtime]System.Func`2<object,int32> input) cil managed + { + ldarg.1 + ret + } + + // assignment from Func<string, int> to Func<object, int> is invalid + .method private hidebysig instance class [System.Runtime]System.Func`2<object,int32> + DelegateAssignmentParameter_Invalid_StackUnexpected(class [System.Runtime]System.Func`2<string,int32> input) cil managed + { + ldarg.1 + ret + } + + // assignment from Func<int, object> to Func<int, string> is invalid + .method private hidebysig instance class [System.Runtime]System.Func`2<int32,string> + DelegateAssignment_Invalid_StackUnexpected(class [System.Runtime]System.Func`2<int32,object> input) cil managed + { + ldarg.1 + ret + } + + .method public hidebysig specialname rtspecialname + instance void .ctor() cil managed + { + ldarg.0 + call instance void [System.Runtime]System.Object::.ctor() + ret + } +} |