Unify collection expression cycle handling #75464
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cston
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Oct 14, 2024
| @@ -13878,16 +13878,7 @@ static void Test(params MyCollection a) | |||
| Diagnostic(ErrorCode.ERR_ParamsCollectionInfiniteChainOfConstructorCalls, "[1]").WithArguments("MyCollection", "MyCollection.MyCollection(params MyCollection)").WithLocation(21, 14), | |||
| // (21,15): error CS9223: Creation of params collection 'MyCollection' results in an infinite chain of invocation of constructor 'MyCollection.MyCollection(params MyCollection)'. | |||
| // Test([1]); | |||
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cston
reviewed
Oct 14, 2024
| Debug.Assert((collectionCreation is BoundNewT && !isExpanded && constructor is null) || | ||
| (collectionCreation is BoundObjectCreationExpression creation && creation.Expanded == isExpanded && creation.Constructor == constructor)); | ||
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| if (collectionCreation.HasErrors) |
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It's not needed, but it prevents cascading diagnostics. For example, in a call like Test(2, 3);, the cycle error would be reported on Test(2, 3), 2, and 3.
cston
approved these changes
Oct 14, 2024
This was referenced Oct 22, 2024
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Resolves #75024.