Fix renaming constructor via alias (#79175)

Fix #58463

Author: genlu

src/EditorFeatures/Test2/Rename/CSharp/AliasTests.vb

@@ -730,5 +730,46 @@ class Program
                 result.AssertLabeledSpansAre("resolved", "var y = (x as int?) + 1;", RelatedLocationType.ResolvedNonReferenceConflict)
             End Using
         End Sub
+
+        <Theory, WorkItem("https://github.com/dotnet/roslyn/issues/58463")>
+        <CombinatorialData>
+        Public Sub RenameReferencingConstreuctorViaAlias(host As RenameTestHost)
+            Using result = RenameEngineResult.Create(_outputHelper,
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document><![CDATA[
+using [|ToBeRenamed|] = N.M.[|ToBeRenamed|];
+
+namespace N
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            [|ToBeRenamed|] myClass = new [|ToBeRenamed|]("hello");     // references to the constructor via an identically named alias should also be renamed
+        }
+    }
+}
+
+                        ]]></Document>
+                        <Document><![CDATA[
+namespace N.M
+{
+    internal class [|$$ToBeRenamed|] 
+    {
+        private string myVar2;
+        internal [|ToBeRenamed|](string var1)
+        {
+            myVar2 = var1;
+        }
+    }
+}
+
+                        ]]></Document>
+                    </Project>
+                </Workspace>, host:=host, renameTo:="ThisIsTheNewName")
+
+            End Using
+        End Sub
     End Class
 End Namespace

src/Workspaces/Core/Portable/Rename/SymbolicRenameLocations.ReferenceProcessing.cs

@@ -282,7 +282,11 @@ internal static async Task<IEnumerable<RenameLocation>> GetRenamableReferenceLoc
                 // rather than a whole namespace of stuff.
                 if (location.Alias != null)
                 {
-                    if (location.Alias.Name == referencedSymbol.Name)
+                    var referencedSymbolName = referencedSymbol is IMethodSymbol { MethodKind: MethodKind.Constructor } constructorSymbol
+                        ? constructorSymbol.ContainingType.Name
+                        : referencedSymbol.Name;
+
+                    if (location.Alias.Name == referencedSymbolName)
                     {
                         results.Add(new RenameLocation(location.Location, location.Document.Id,
                             candidateReason: location.CandidateReason, isRenamableAliasUsage: true, isWrittenTo: location.IsWrittenTo));