@@ -3,7 +3,7 @@
 ### Added
 
 ### Changed
-* Change compiler default setting for compressedMetada ([Issue #17379](https://github.com/dotnet/fsharp/issues/17379), [PR #17383](https://github.com/dotnet/fsharp/pull/17383))
+* Change compiler default setting realsig+ when building assemblies ([Issue #17384](https://github.com/dotnet/fsharp/issues/17384), [PR #17378](https://github.com/dotnet/fsharp/pull/17385))
+* Change compiler default setting for compressedMetadata ([Issue #17379](https://github.com/dotnet/fsharp/issues/17379), [PR #17383](https://github.com/dotnet/fsharp/pull/17383))
 
 ### Breaking Changes
-
@@ -3,7 +3,8 @@
 ### Added
 
 ### Changed
-* Change compiler default setting for compressedMetada ([Issue #17379](https://github.com/dotnet/fsharp/issues/17379), [PR #17383](https://github.com/dotnet/fsharp/pull/17383))
+* Change compiler default setting realsig+ when building assemblies ([Issue #17384](https://github.com/dotnet/fsharp/issues/17384), [PR #17378](https://github.com/dotnet/fsharp/pull/17385))
+* Change compiler default setting for compressedMetadata ([Issue #17379](https://github.com/dotnet/fsharp/issues/17379), [PR #17383](https://github.com/dotnet/fsharp/pull/17383))
 
 ### Breaking Changes
 
@@ -822,7 +822,7 @@ type TcConfigBuilder =
                     DumpGraph = false
                 }
             dumpSignatureData = false
-            realsig = false
+            realsig = true
             strictIndentation = None
         }
 
 
@@ -56,7 +56,7 @@ type public Fsc() as this =
     let mutable preferredUILang: string MaybeNull = null
     let mutable publicSign: bool = false
     let mutable provideCommandLineArgs: bool = false
-    let mutable realsig: bool = false
+    let mutable realsig: bool = true
     let mutable references: ITaskItem[] = [||]
     let mutable referencePath: string MaybeNull = null
     let mutable refOnly: bool = false
 
@@ -506,24 +506,30 @@ let ApplyComputedDelegate(c: int) =
             """,
             (fun verifier -> verifier.VerifyIL [
             """
-.method public static int32  ApplyComputedDelegate(int32 c) cil managed
-{
-  
-  .maxstack  4
-  .locals init (class [FSharp.Core]Microsoft.FSharp.Core.PrintfFormat`4<class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [runtime]System.IO.TextWriter,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit> V_0)
-  IL_0000:  ldstr      "hello"
-  IL_0005:  newobj     instance void class [FSharp.Core]Microsoft.FSharp.Core.PrintfFormat`5<class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [runtime]System.IO.TextWriter,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit>::.ctor(string)
-  IL_000a:  stloc.0
-  IL_000b:  call       class [netstandard]System.IO.TextWriter [netstandard]System.Console::get_Out()
-  IL_0010:  ldloc.0
-  IL_0011:  call       !!0 [FSharp.Core]Microsoft.FSharp.Core.PrintfModule::PrintFormatLineToTextWriter<class [FSharp.Core]Microsoft.FSharp.Core.Unit>(class [runtime]System.IO.TextWriter,
-                                                                                                                                                       class [FSharp.Core]Microsoft.FSharp.Core.PrintfFormat`4<!!0,class [runtime]System.IO.TextWriter,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit>)
-  IL_0016:  pop
-  IL_0017:  ldarg.0
-  IL_0018:  call       int32 ReduceComputedDelegate::f@7(int32)
-  IL_001d:  ldc.i4.3
-  IL_001e:  add
-  IL_001f:  ret
+  .method public static int32  ApplyComputedDelegate(int32 c) cil managed
+  {
+    
+    .maxstack  4
+    .locals init (class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,int32> V_0,
+             class [FSharp.Core]Microsoft.FSharp.Core.PrintfFormat`4<class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [runtime]System.IO.TextWriter,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit> V_1)
+    IL_0000:  ldsfld     class ReduceComputedDelegate/f@7 ReduceComputedDelegate/f@7::@_instance
+    IL_0005:  stloc.0
+    IL_0006:  ldstr      "hello"
+    IL_000b:  newobj     instance void class [FSharp.Core]Microsoft.FSharp.Core.PrintfFormat`5<class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [runtime]System.IO.TextWriter,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit>::.ctor(string)
+    IL_0010:  stloc.1
+    IL_0011:  call       class [netstandard]System.IO.TextWriter [netstandard]System.Console::get_Out()
+    IL_0016:  ldloc.1
+    IL_0017:  call       !!0 [FSharp.Core]Microsoft.FSharp.Core.PrintfModule::PrintFormatLineToTextWriter<class [FSharp.Core]Microsoft.FSharp.Core.Unit>(class [runtime]System.IO.TextWriter,
+                                                                                                                                                         class [FSharp.Core]Microsoft.FSharp.Core.PrintfFormat`4<!!0,class [runtime]System.IO.TextWriter,class [FSharp.Core]Microsoft.FSharp.Core.Unit,class [FSharp.Core]Microsoft.FSharp.Core.Unit>)
+    IL_001c:  pop
+    IL_001d:  ldloc.0
+    IL_001e:  ldarg.0
+    IL_001f:  callvirt   instance !1 class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<int32,int32>::Invoke(!0)
+    IL_0024:  ldc.i4.3
+    IL_0025:  add
+    IL_0026:  ret
+  } 
+
 } 
             """
             ]))
Original file line number	Diff line number	Diff line change
`@@ -822,7 +822,7 @@ type TcConfigBuilder =`
`822`	`822`	`DumpGraph = false`
`823`	`823`	`}`
`824`	`824`	`dumpSignatureData = false`
`825`		`- realsig = false`
	`825`	`+ realsig = true`
`826`	`826`	`strictIndentation = None`
`827`	`827`	`}`
`828`	`828`