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// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
using System;
using System.Diagnostics.CodeAnalysis;
using Mono.Linker.Tests.Cases.Expectations.Assertions;
using Mono.Linker.Tests.Cases.Expectations.Metadata;
namespace Mono.Linker.Tests.Cases.DataFlow
{
[SetupCompileArgument ("/langversion:7.3")]
[SetupCompileArgument ("/unsafe")]
[Kept]
[ExpectedNoWarnings]
class ByRefDataflow
{
public static void Main ()
{
{
Type t = typeof (ClassPassedToMethodTakingTypeByRef);
MethodWithRefParameter (ref t);
}
{
Type t1 = typeof (ClassMaybePassedToMethodTakingTypeByRef);
Type t2 = typeof (OtherClassMaybePassedToMethodTakingTypeByRef);
ref Type t = ref t1;
if (string.Empty.Length == 0)
t = ref t2;
MethodWithRefParameter (ref t);
}
PassRefToField ();
PassRefToParameter (null);
PointerDereference.Test ();
}
[Kept]
[KeptAttributeAttribute (typeof (DynamicallyAccessedMembersAttribute))]
[DynamicallyAccessedMembers (DynamicallyAccessedMemberTypes.PublicParameterlessConstructor)]
static Type s_typeWithPublicParameterlessConstructor;
[Kept]
// Trimmer and analyzer use different formats for ref parameters: https://github.com/dotnet/linker/issues/2406
[ExpectedWarning ("IL2077", nameof (ByRefDataflow) + "." + nameof (MethodWithRefParameter) + "(Type&)", ProducedBy = ProducedBy.Trimmer)]
[ExpectedWarning ("IL2077", nameof (ByRefDataflow) + "." + nameof (MethodWithRefParameter) + "(ref Type)", ProducedBy = ProducedBy.Analyzer)]
[ExpectedWarning ("IL2069", nameof (s_typeWithPublicParameterlessConstructor), "parameter 'type'", nameof (MethodWithRefParameter), ProducedBy = ProducedBy.Trimmer)]
// MethodWithRefParameter (ref x)
[ExpectedWarning ("IL2077", nameof (ByRefDataflow) + "." + nameof (MethodWithRefParameter) + "(Type&)", ProducedBy = ProducedBy.Trimmer)]
[ExpectedWarning ("IL2077", nameof (ByRefDataflow) + "." + nameof (MethodWithRefParameter) + "(ref Type)", ProducedBy = ProducedBy.Analyzer)]
public static void PassRefToField ()
{
MethodWithRefParameter (ref s_typeWithPublicParameterlessConstructor);
var x = s_typeWithPublicParameterlessConstructor;
MethodWithRefParameter (ref x);
}
[Kept]
// Trimmer and analyzer use different formats for ref parameters: https://github.com/dotnet/linker/issues/2406
[ExpectedWarning ("IL2067", nameof (ByRefDataflow) + "." + nameof (MethodWithRefParameter) + "(Type&)", ProducedBy = ProducedBy.Trimmer)]
[ExpectedWarning ("IL2067", nameof (ByRefDataflow) + "." + nameof (MethodWithRefParameter) + "(ref Type)", ProducedBy = ProducedBy.Analyzer)]
public static void PassRefToParameter (Type parameter)
{
MethodWithRefParameter (ref parameter);
}
[Kept]
public static void MethodWithRefParameter (
[KeptAttributeAttribute(typeof(DynamicallyAccessedMembersAttribute))]
[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicMethods)]
ref Type type)
{
type = typeof (ClassReturnedAsRefFromMethodTakingTypeByRef);
}
[Kept]
class ClassPassedToMethodTakingTypeByRef
{
[Kept]
public static void KeptMethod () { }
internal static void RemovedMethod () { }
}
[Kept]
class ClassReturnedAsRefFromMethodTakingTypeByRef
{
[Kept]
public static void KeptMethod () { }
internal static void RemovedMethod () { }
}
[Kept]
class ClassMaybePassedToMethodTakingTypeByRef
{
[Kept]
public static void KeptMethod () { }
internal static void RemovedMethod () { }
}
[Kept]
class OtherClassMaybePassedToMethodTakingTypeByRef
{
[Kept]
public static void KeptMethod () { }
internal static void RemovedMethod () { }
}
[Kept]
unsafe class PointerDereference
{
[Kept]
[KeptAttributeAttribute (typeof (RequiresUnreferencedCodeAttribute))]
[RequiresUnreferencedCode ("")]
static unsafe void IntPtrDeref ()
{
*_ptr = GetDangerous ();
}
[Kept]
static IntPtr* _ptr;
[Kept]
[KeptAttributeAttribute (typeof (RequiresUnreferencedCodeAttribute))]
[RequiresUnreferencedCode ("")]
static IntPtr GetDangerous () { return IntPtr.Zero; }
[Kept]
[ExpectedWarning ("IL2070")]
static unsafe void LocalStackAllocDeref (Type t)
{
// Code pattern from CoreLib which caused problems in AOT port
// so making sure we handle this correctly (that is without failing)
int buffSize = 256;
byte* stackSpace = stackalloc byte[buffSize];
byte* buffer = stackSpace;
byte* toFree = buffer;
buffer = null;
// IL2070 - this is to make sure that DataFlow ran on the method's body
t.GetProperties ();
}
[Kept]
[ExpectedWarning ("IL2026")]
public static void Test ()
{
IntPtrDeref ();
LocalStackAllocDeref (null);
}
}
}
}
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