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GetFunctionPointerForDelegateTests tests fail with Specified cast is not valid on Browser #39187

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GetFunctionPointerForDelegateTests tests fail with Specified cast is not valid on Browser#39187
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pavelsavara
Labels
arch-wasmWebAssembly architecturearea-Codegen-Interpreter-monodisabled-testThe test is disabled in source code against the issue
Milestone
Future

Description

@mdh1418
mdh1418
opened on Jul 13, 2020

When running System.Runtime.InteropServices library tests on Browser wasm, two functions fail with Specified cast is not valid:

  • GetFunctionPointerForDelegate_MarshalledDelegateNonGeneric_ReturnsExpected
  • GetFunctionPointerForDelegate_MarshalledDelegateGeneric_ReturnsExpected

Note

When the tests are not ordered, the suite sometimes fails with the two tests above

[FAIL] System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests.GetFunctionPointerForDelegate_MarshalledDelegateNonGeneric_ReturnsExpected
System.InvalidCastException : Specified cast is not valid.
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[FAIL] System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests.GetFunctionPointerForDelegate_MarshalledDelegateGeneric_ReturnsExpected
System.InvalidCastException : Specified cast is not valid.
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

And other times, it fails with the six tests from GetDelegateForFunctionPointerTests.cs

[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_NonGeneric_ReturnsExpected(t: typeof(System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+NonGenericDelegate))
Assert.IsType() Failure
Expected: System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+NonGenericDelegate
Actual: System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests+NonGenericDelegate
 at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_NonGeneric_ReturnsExpected(t: typeof(System.MulticastDelegate))
Assert.IsType() Failure
Expected: System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+NonGenericDelegate
Actual: System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests+NonGenericDelegate
 at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_NonGeneric_ReturnsExpected(t: typeof(System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+OtherNonGenericDelegate))
Assert.IsType() Failure
Expected: System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+NonGenericDelegate
Actual: System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests+NonGenericDelegate
 at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_GenericInvalidType_ReturnsExpected
Assert.IsType() Failure
Expected: System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+NonGenericDelegate
Actual: System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests+NonGenericDelegate
 at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_CollectibleType_ReturnsExpected
Assert.IsType() Failure
Expected: System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+NonGenericDelegate
Actual: System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests+NonGenericDelegate
 at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_Generic_ReturnsExpected
System.InvalidCastException : Specified cast is not valid.
 at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

Activity

  1. mdh1418
    added
    arch-wasmWebAssembly architecture
    area-System.Runtime.InteropServices
    on Jul 13, 2020
  2. Dotnet-GitSync-Bot
    added
    untriagedNew issue has not been triaged by the area owner
    on Jul 13, 2020
  3. marek-safar
    added
    area-Codegen-Interpreter-mono
    and removed
    area-System.Runtime.InteropServices
    untriagedNew issue has not been triaged by the area owner
    on Jul 14, 2020
  5. marek-safar
    added this to the 5.0.0 milestone on Jul 14, 2020
  6. marek-safar
    assigned
    vargaz
    on Jul 14, 2020
  7. akoeplinger
    added 2 commits that reference this issue on Jul 14, 2020

    WASM: Disable two GetFunctionPointerForDelegate tests

    e619378

    WASM: Disable two GetFunctionPointerForDelegate tests (#39278)

    d8a0af0

  8. vargaz commented on Jul 31, 2020

    @vargaz
    vargaz
    on Jul 31, 2020
    Contributor

    These now fail with:
    System.PlatformNotSupportedException : No native to managed transitions on this platform.
    They cannot be supported without the pinvoke generator.

  9. lewing commented on Aug 1, 2020

    @lewing
    lewing
    on Aug 1, 2020
    Member

    @vargaz this sounds like net6?

  10. vargaz commented on Aug 1, 2020

    @vargaz
    vargaz
    on Aug 1, 2020
    Contributor

    Probably.

  11. marek-safar
    unassigned
    vargaz
    on Aug 3, 2020

  12. 12 remaining items

  13. radical
    modified the milestones: 7.0.0, 8.0.0 on Aug 12, 2022

  14. lewing commented on Jul 11, 2023

    @lewing
    lewing
    on Jul 11, 2023
    Member

    @ilonatommy can you check if these tests still fail?

  15. ilonatommy commented on Jul 11, 2023

    @ilonatommy
    ilonatommy
    on Jul 11, 2023
    Member

    The error message changed to:

    [FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_CantCast_ThrowsInvalidCastException
   System.PlatformNotSupportedException : No native to managed transition for method 'void System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests:Method (string)', missing [UnmanagedCallersOnly] attribute.
  at System.Runtime.InteropServices.Marshal.GetFunctionPointerForDelegate(Delegate d)
  at System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_CantCast_ThrowsInvalidCastException()
  at System.Reflection.MethodInvoker.InterpretedInvoke(Object obj, IntPtr* args)
  at System.Reflection.MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)

    When we use the hint and add the decorator:

            [UnmanagedCallersOnly]
        private static void Method(string s) { }

    GetFunctionPointerForDelegateTests.cs(124,36): error CS8894: Cannot use 'string' as a parameter type on a method attributed with 'UnmanagedCallersOnly'

    When we change the method to receive char* in unsafe context, the message is back to missing [UnmanagedCallersOnly], so apparently I am not using it correctly.

    I am not sure how to fix this.

    Tests failing with this message:

    [FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_CantCast_ThrowsInvalidCastException
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_GenericInvalidType_ReturnsExpected
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_NonGeneric_ReturnsExpected(t: typeof(System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+NonGenericDelegate))
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_NonGeneric_ReturnsExpected(t: typeof(System.MulticastDelegate))
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_NonGeneric_ReturnsExpected(t: typeof(System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests+OtherNonGenericDelegate))
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_Generic_ReturnsExpected
[FAIL] System.Runtime.InteropServices.Tests.GetDelegateForFunctionPointerTests.GetDelegateForFunctionPointer_CollectibleType_ReturnsExpected
[FAIL] System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests.GetFunctionPointerForDelegate_MarshalledDelegateGeneric_ReturnsExpected
[FAIL] System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests.GetFunctionPointerForDelegate_NormalDelegateGeneric_ReturnsExpected
[FAIL] System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests.GetFunctionPointerForDelegate_MarshalledDelegateNonGeneric_ReturnsExpected
[FAIL] System.Runtime.InteropServices.Tests.GetFunctionPointerForDelegateTests.GetFunctionPointerForDelegate_NormalDelegateNonGeneric_ReturnsExpected

  16. lewing commented on Jul 21, 2023

    @lewing
    lewing
    on Jul 21, 2023
    Member

    @vargaz is this something we expect to work?

  17. ghost added
    in-prThere is an active PR which will close this issue when it is merged
    on Jul 21, 2023
  18. vargaz
    added a commit that references this issue on Jul 21, 2023

    [mono][wasm] Use [UnmanagedCallersOnly] in GetDelegateForFunctionPoin…

    43e76e3
  19. lewing
    modified the milestones: 8.0.0, 9.0.0 on Aug 13, 2023
  20. ghost removed
    in-prThere is an active PR which will close this issue when it is merged
    on Jan 26, 2024

  21. lewing commented on Feb 21, 2024

    @lewing
    lewing
    on Feb 21, 2024
    Member

    cc @kg @BrzVlad

  22. lewing
    modified the milestones: 9.0.0, Future on Apr 25, 2024
  23. pavelsavara
    assigned
    pavelsavara
    and unassigned
    vargaz
    on Jun 9, 2025
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