Piece of code for https://meta.stackexchange.com/questions/72877

exiftool

$ exiftool ./FSharp.Core.dll
ExifTool Version Number         : 12.16
File Name                       : FSharp.Core.dll
Directory                       : .
File Size                       : 4.5 MiB
File Modification Date/Time     : 2021:07:14 22:36:15+03:00
File Access Date/Time           : 2021:07:14 22:37:15+03:00
File Inode Change Date/Time     : 2021:07:14 22:36:15+03:00
File Permissions                : rw-r--r--
Warning                         : Invalid file size in DOS header
File Type                       : Win32 DLL
File Type Extension             : dll
MIME Type                       : application/octet-stream
Machine Type                    : Unknown (0xfd1d)
Time Stamp                      : 2067:09:11 14:55:44+03:00
Image File Characteristics      : Executable, Large address aware, DLL
PE Type                         : PE32+
Linker Version                  : 11.0
Code Size                       : 0
Initialized Data Size           : 0
Uninitialized Data Size         : 0
Entry Point                     : 0x0000
OS Version                      : 5.2
Image Version                   : 0.0
Subsystem Version               : 5.2
Subsystem                       : Windows command line
File Version Number             : 5.0.221.26207
Product Version Number          : 5.0.0.21262
File Flags Mask                 : 0x003f
File Flags                      : (none)
File OS                         : Win32
Object File Type                : Executable application
File Subtype                    : 0
Language Code                   : Neutral
Character Set                   : Unicode
Assembly Version                : 5.0.0.0
File Version                    : 5.0.221.26207
Product Version                 : 5.0.2-beta.21262.7+1b23bbeda88ea3cb9be9af777f4c99fa8663df81
Original File Name              : FSharp.Core.dll
File Description                : FSharp.Core
Product Name                    : FSharp.Core
Company Name                    : Microsoft Corporation
Legal Copyright                 : © Microsoft Corporation. All rights reserved.

test.fs

module Hack1

let app f x = f x 

let rec hack n : int -> int = 
    if n>0 then hack (n-1)
    else (fun x -> x)

[<EntryPoint>]
let main _ : int =
    System.Console.WriteLine(hack 10 42)
    0

testRepeat.deps.json

{
  "runtimeTarget": {
    "name": ".NETCoreApp,Version=v5.0",
    "signature": ""
  },
  "compilationOptions": {},
  "targets": {
    ".NETCoreApp,Version=v5.0": {
      "main/1.0.0": {
        "runtime": {
          "FSharp.Core.dll": {}
        }
      }
    }
  },
  "libraries": {
    "myApp/1.0.0": {
      "type": "project",
      "serviceable": false,
      "sha512": ""
    }
  }
}%

testRepeat.il

.assembly extern mscorlib {}
// .assembly extern FSharp.Core
// {
//    .ver 5:0:0:0
// //   .publickeytoken = (B0 3F 5F 7F 11 D5 0A 3A ) // .?_....:
// }

.assembly MyTestAssembly {}

.class public auto ansi abstract sealed Hack1
    extends [System.Runtime]System.Object
{
    .custom instance void [FSharp.Core]Microsoft.FSharp.Core.CompilationMappingAttribute::.ctor(valuetype [FSharp.Core]Microsoft.FSharp.Core.SourceConstructFlags) = (
        01 00 07 00 00 00 00 00
    )
    // Nested Types
    .class nested assembly auto ansi sealed serializable beforefieldinit hack@8
        extends class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<valuetype [System.Private.CoreLib]System.Int32, valuetype [System.Private.CoreLib]System.Int32>
    {
        // Fields
        .field assembly static initonly class Hack1/hack@8 @_instance

        // Methods
        .method assembly specialname rtspecialname 
            instance void .ctor () cil managed 
        {
            .custom instance void [System.Private.CoreLib]System.Runtime.CompilerServices.CompilerGeneratedAttribute::.ctor() = (
                01 00 00 00
            )
            .custom instance void [System.Private.CoreLib]System.Diagnostics.DebuggerNonUserCodeAttribute::.ctor() = (
                01 00 00 00
            )
            // Method begins at RVA 0x2088
            // Code size 7 (0x7)
            .maxstack 8

            IL_0000: ldarg.0
            IL_0001: call instance void class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<valuetype [System.Private.CoreLib]System.Int32, valuetype [System.Private.CoreLib]System.Int32>::.ctor()
            IL_0006: ret
        } // end of method hack@8::.ctor

        .method public strict virtual 
            instance valuetype [System.Private.CoreLib]System.Int32 Invoke (
                valuetype [System.Private.CoreLib]System.Int32 x
            ) cil managed 
        {
            // Method begins at RVA 0x2090
            // Code size 2 (0x2)
            .maxstack 8

            IL_0000: ldarg.1
            IL_0001: ret
        } // end of method hack@8::Invoke

        .method private specialname rtspecialname static 
            void .cctor () cil managed 
        {
            // Method begins at RVA 0x2094
            // Code size 11 (0xb)
            .maxstack 10

            IL_0000: newobj instance void Hack1/hack@8::.ctor()
            IL_0005: stsfld class Hack1/hack@8 Hack1/hack@8::@_instance
            IL_000a: ret
        } // end of method hack@8::.cctor

    } // end of class hack@8


    // Methods
    .method public static 
        !!b app<a, b> (
            class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!a, !!b> f,
            !!a x
        ) cil managed 
    {
        .custom instance void [FSharp.Core]Microsoft.FSharp.Core.CompilationArgumentCountsAttribute::.ctor(int32[]) = (
            01 00 02 00 00 00 01 00 00 00 01 00 00 00 00 00
        )
        // Method begins at RVA 0x2050
        // Code size 10 (0xa)
        .maxstack 8

        IL_0000: ldarg.0
        IL_0001: ldarg.1
        IL_0002: tail.
        IL_0004: callvirt instance !1 class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<!!a, !!b>::Invoke(!0)
        IL_0009: ret
    } // end of method Hack1::app

    .method public static 
        class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<valuetype [System.Private.CoreLib]System.Int32, valuetype [System.Private.CoreLib]System.Int32> hack (
            valuetype [System.Private.CoreLib]System.Int32 n
        ) cil managed 
    {
        // Method begins at RVA 0x205c
        // Code size 17 (0x11)
        .maxstack 8

        // loop start
            IL_0000: ldarg.0
            IL_0001: ldc.i4.0
            IL_0002: ble.s IL_000b

            IL_0004: ldarg.0
            IL_0005: ldc.i4.1
            IL_0006: sub
            IL_0007: starg.s n
            IL_0009: br.s IL_0000
        // end loop

        IL_000b: ldsfld class Hack1/hack@8 Hack1/hack@8::@_instance
        IL_0010: ret
    } // end of method Hack1::hack

    .method public static 
        valuetype [System.Private.CoreLib]System.Int32 main (
            class [System.Private.CoreLib]System.String[] _arg1
        ) cil managed 
    {
        .custom instance void [FSharp.Core]Microsoft.FSharp.Core.EntryPointAttribute::.ctor() = (
            01 00 00 00
        )
        // Method begins at RVA 0x2070
        // Code size 21 (0x15)
        .maxstack 8

        IL_0000: ldc.i4.s 10
        IL_0002: call class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<valuetype [System.Private.CoreLib]System.Int32, valuetype [System.Private.CoreLib]System.Int32> Hack1::hack(valuetype [System.Private.CoreLib]System.Int32)
        IL_0007: ldc.i4.s 42
        IL_0009: callvirt instance !1 class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<valuetype [System.Private.CoreLib]System.Int32, valuetype [System.Private.CoreLib]System.Int32>::Invoke(!0)
        IL_000e: call void [System.Console]System.Console::WriteLine(int32)
        IL_0013: ldc.i4.0
        IL_0014: ret
    } // end of method Hack1::main

} // end of class Hack1

.method static void main()
{
    .entrypoint
    .maxstack 8

    IL_0000: ldc.i4.s 10
    IL_0002: call class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<valuetype [System.Private.CoreLib]System.Int32, valuetype [System.Private.CoreLib]System.Int32> Hack1::hack(valuetype [System.Private.CoreLib]System.Int32)
    // IL_0007: ldc.i4.s 42
    // IL_0009: callvirt instance !1 class [FSharp.Core]Microsoft.FSharp.Core.FSharpFunc`2<valuetype [System.Private.CoreLib]System.Int32, valuetype [System.Private.CoreLib]System.Int32>::Invoke(!0)
    IL_000e: call void [System.Console]System.Console::WriteLine(int32)
    IL_0013: ldc.i4.0
    IL_0014: ret
}

testRepeat.runtimeconfig.json

{
  "runtimeOptions": {
    "framework": {
      "name": "Microsoft.NETCore.App",
      "version": "5.0.7"
    },
    "additionalProbingPaths": [
      "/home/kakadu/.dotnet/store/|arch|/|tfm|",
      "/home/kakadu/.nuget/packages",
      "."
    ]
  }
}%