Roslyn v4.14 no longer reports a second CS1661 error at the same location where there is also a CS1678 error (https://github.com/dotnet/roslyn/pull/75400/files#r1866802220)

jnm2 · jnm2 · commit eec39e833c20 · 2025-06-01T21:39:18.000-04:00
diff --git a/standard/conversions.md b/standard/conversions.md
@@ -767,7 +767,7 @@ Specifically, an anonymous function `F` is compatible with a delegate type `D`
 
 > *Example*: The following examples illustrate these rules:
 >
-> <!-- Example: {template:"code-in-class-lib-without-using", name:"AnonymousFunctionsConv1", expectedErrors:["CS1593","CS1661","CS1678","CS8030","CS1688","CS1661","CS1676","CS1643","CS0126","CS0029","CS1662","CS1670","CS0029","CS1662"]} -->
+> <!-- Example: {template:"code-in-class-lib-without-using", name:"AnonymousFunctionsConv1", expectedErrors:["CS1593","CS1661","CS1678","CS8030","CS1688","CS1676","CS1643","CS0126","CS0029","CS1662","CS1670","CS0029","CS1662"]} -->
 > ```csharp
 > delegate void D(int x);
 > D d1 = delegate { };                         // Ok

Original file line number	Diff line number	Diff line change
@@ -767,7 +767,7 @@ Specifically, an anonymous function `F` is compatible with a delegate type `D`
`767`	`767`
`768`	`768`	`> Example: The following examples illustrate these rules:`
`769`	`769`	`>`
`770`		`-> <!-- Example: {template:"code-in-class-lib-without-using", name:"AnonymousFunctionsConv1", expectedErrors:["CS1593","CS1661","CS1678","CS8030","CS1688","CS1661","CS1676","CS1643","CS0126","CS0029","CS1662","CS1670","CS0029","CS1662"]} -->`
	`770`	`+> <!-- Example: {template:"code-in-class-lib-without-using", name:"AnonymousFunctionsConv1", expectedErrors:["CS1593","CS1661","CS1678","CS8030","CS1688","CS1676","CS1643","CS0126","CS0029","CS1662","CS1670","CS0029","CS1662"]} -->`
`771`	`771`	> ```csharp
`772`	`772`	`> delegate void D(int x);`
`773`	`773`	`> D d1 = delegate { }; // Ok`