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Confusing error message when the target member cannot be located for an explicit interface implementation #38467

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AlekseyTs opened this issue Sep 3, 2019 · 1 comment
Open

Confusing error message when the target member cannot be located for an explicit interface implementation #38467

AlekseyTs opened this issue Sep 3, 2019 · 1 comment
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Area-Compilers Bug Concept-Diagnostic Clarity The issues deals with the ease of understanding of errors and warnings. help wanted The issue is "up for grabs" - add a comment if you are interested in working on it Language-C#
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@AlekseyTs
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interface I100 { }

class C100 : I100
{
    object I100.M4() => null;
}

Observed:

 error CS0539: 'C100.M4()' in explicit interface declaration is not found among members of the interface that can be implemented

But C100 doesn't have member named M4.
@AlekseyTs AlekseyTs added Language-C# Area-Compilers Concept-Diagnostic Clarity The issues deals with the ease of understanding of errors and warnings. labels Sep 3, 2019
@AlekseyTs AlekseyTs mentioned this issue Sep 3, 2019
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@gafter
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gafter commented Sep 3, 2019

The same is true if C100 is an interface.

@gafter gafter added Bug help wanted The issue is "up for grabs" - add a comment if you are interested in working on it labels Sep 3, 2019
@gafter gafter added this to the Compiler.Next milestone Sep 3, 2019
@jaredpar jaredpar modified the milestones: Compiler.Next, Backlog Sep 12, 2023
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Area-Compilers Bug Concept-Diagnostic Clarity The issues deals with the ease of understanding of errors and warnings. help wanted The issue is "up for grabs" - add a comment if you are interested in working on it Language-C#
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