I want to set the break-point at bar function. (^_^)/

[callmekohei]

Hello! I'm callmekohei!.

Problems summary

I want to set the break-point at `bar` function. (^_^)/

system

$ sw_vers 
ProductName:    Mac OS X
ProductVersion: 10.12.6
BuildVersion:   16G29

$ sdb --version
Mono soft debugger (sdb) 1.5.6503.20649

$ mono --version
Mono JIT compiler version 5.0.1.1 (2017-02/5077205 Wed May 31 14:47:04 BST 2017)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
    TLS:           normal
    SIGSEGV:       altstack
    Notification:  kqueue
    Architecture:  amd64
    Disabled:      none
    Misc:          softdebug 
    LLVM:          supported, not enabled.
    GC:            sgen (concurrent by default)

code

let bar() = 
    stdout.WriteLine("abc")   // <--- I want to set break-point at this line!

let foo (str:string) =
    stdout.WriteLine(str)
    bar()

[<EntryPointAttribute>]
let main _ =
    let s = "Foo!"
    foo s
    stdout.WriteLine("callmekohei")
    0

debugging

$ sdb
Welcome to the Mono soft debugger (sdb 1.5.6503.20649)
Type 'help' for a list of commands or 'quit' to exit

(sdb) bp add at test.fs 2
Breakpoint '0' added at '/Users/callmekohei/tmp/test.fs:2'
(sdb) bp add at test.fs 12
Breakpoint '1' added at '/Users/callmekohei/tmp/test.fs:12'
(sdb) bp
#0 '/Users/callmekohei/tmp/test.fs:2'
#1 '/Users/callmekohei/tmp/test.fs:12'
(sdb) r test.exe
Inferior process '1627' ('test.exe') started
Event: 'TargetReady'
[Mono] Loaded assembly: /Users/callmekohei/tmp/test.exe
[Mono] Loaded assembly: /usr/local/Cellar/mono/5.0.1.1/lib/mono/gac/FSharp.Core/4.4.1.0__b03f5f7f11d50a3a/FSharp.Core.dll
[Mono] Resolved pending breakpoint at 'test.fs:2,1' to void Test.bar () [0x00000].
[Mono] Resolved pending breakpoint at 'test.fs:12,1' to int Test.main (string[] _arg1) [0x0001f].
Foo!
abc
Hit breakpoint at '/Users/callmekohei/tmp/test.fs:12'
#0 [0x0000001F] Test.main at /Users/callmekohei/tmp/test.fs:12
    stdout.WriteLine("callmekohei")
Event: 'TargetHitBreakpoint'
(sdb) c
Inferior process '1627' ('test.exe') resumed
callmekohei
Inferior process '1627' ('test.exe') exited with code '0'
Event: 'TargetExited'

[alexrp]

Hello,

Assuming your code is in a file called Program.fs, something like bp add fun Program.bar should work, since the F# compiler translates modules into static classes.

[callmekohei]

Hello!

Thank your reply! (^_^)/

I do try it. But it does not work well (^_^;;

Last login: Thu Nov 23 17:05:08 on ttys000
~$ cd tmp
tmp$ cd jikken_sdb/
jikken_sdb$ cat pro
Program.exe  Program.fs   
jikken_sdb$ cat Program.fs 
let bar() = 
    stdout.WriteLine("abc")

let foo (str:string) =
    stdout.WriteLine(str)
    bar()

[<EntryPointAttribute>]
let main _ =
    let s = "Foo!"
    foo s
    stdout.WriteLine("callmekohei")
    0
jikken_sdb$ sdb
Welcome to the Mono soft debugger (sdb 1.5.6503.20649)
Type 'help' for a list of commands or 'quit' to exit

(sdb) bp add fun Program.bar
Breakpoint '0' added for method 'Program.bar'
(sdb) run Program.exe
Inferior process '3306' ('Program.exe') started
Event: 'TargetReady'
[Mono] Loaded assembly: /Users/callmekohei/tmp/jikken_sdb/Program.exe
[Mono] Loaded assembly: /usr/local/Cellar/mono/5.0.1.1/lib/mono/gac/FSharp.Core/4.4.1.0__b03f5f7f11d50a3a/FSharp.Core.dll
[Mono] Resolved pending breakpoint for 'Program.bar()' to [0x0](no debug symbols).
Foo!
abc
callmekohei
Inferior process '3306' ('Program.exe') exited with code '0'
Event: 'TargetExited'
(sdb) exit
Bye
jikken_sdb$ 

[callmekohei]

Hmmmm....

I try to create namespace and module.

namespace ABC
module DEF =
    let bar() = 
        stdout.WriteLine("abc")

    let foo (str:string) =
        stdout.WriteLine(str)
        bar()

    [<EntryPointAttribute>]
    let main _ =
        let s = "Foo!"
        foo s
        stdout.WriteLine("callmekohei")
        0

then try

Last login: Thu Nov 23 17:24:26 on ttys001
~$ cd tmp
tmp$ cd jikken_sdb/
jikken_sdb$ sdb
Welcome to the Mono soft debugger (sdb 1.5.6503.20649)
Type 'help' for a list of commands or 'quit' to exit

(sdb) bp add fun ABC.DEF.bar
Breakpoint '0' added for method 'ABC.DEF.bar'
(sdb) bp
#0 'ABC.DEF.bar'
(sdb) run Program.exe
Inferior process '3447' ('Program.exe') started
Event: 'TargetReady'
[Mono] Loaded assembly: /Users/callmekohei/tmp/jikken_sdb/Program.exe
[Mono] Loaded assembly: /usr/local/Cellar/mono/5.0.1.1/lib/mono/gac/FSharp.Core/4.4.1.0__b03f5f7f11d50a3a/FSharp.Core.dll
[Mono] Resolved pending breakpoint for 'ABC.DEF.bar()' to [0x0](no debug symbols).
Foo!
abc
callmekohei
Inferior process '3447' ('Program.exe') exited with code '0'
Event: 'TargetExited'
(sdb) exit
Bye
jikken_sdb$ 

[alexrp]

Hmm, I think you need to compile your program with --debug+. As far as I remember, method breakpoints do not work without debug information (PDB/MDB file) available (not really sure why).

[callmekohei]

Thank you for your reply!

So, I try it.

jikken_sdb$ cat Program.fs 
namespace ABC
module DEF =
    let bar() = 
        stdout.WriteLine("abc")

    let foo (str:string) =
        stdout.WriteLine(str)
        bar()

    [<EntryPointAttribute>]
    let main _ =
        let s = "Foo!"
        foo s
        stdout.WriteLine("callmekohei")
        0
jikken_sdb$ fsharpc --debug+ Program.fs 
F# Compiler for F# 4.1
Freely distributed under the Apache 2.0 Open Source License
jikken_sdb$ ls
Program.exe     Program.exe.mdb Program.fs

then

jikken_sdb$ sdb
Welcome to the Mono soft debugger (sdb 1.5.6503.20649)
Type 'help' for a list of commands or 'quit' to exit

(sdb) bp add func ABC.DEF.bar
Breakpoint '0' added for method 'ABC.DEF.bar'
(sdb) run program.exe
Inferior process '3813' ('program.exe') started
Event: 'TargetReady'
[Mono] Loaded assembly: /Users/callmekohei/tmp/jikken_sdb/program.exe
[Mono] Loaded assembly: /usr/local/Cellar/mono/5.0.1.1/lib/mono/gac/FSharp.Core/4.4.1.0__b03f5f7f11d50a3a/FSharp.Core.dll
[Mono] Resolved pending breakpoint for 'ABC.DEF.bar()' to /Users/callmekohei/tmp/jikken_sdb/Program.fs:4 [0x00000].
Foo!
abc
callmekohei
Inferior process '3813' ('program.exe') exited with code '0'
Event: 'TargetExited'
(sdb) quit
Bye

Hmmm....

It seems to work not well...

[alexrp]

OK, that looks like a bug. I will take a look.

[callmekohei]

Thank you! (^_^)/

[callmekohei]

Hello! I'm callmekohei!

So, I try and try and try!

I can do it!

I write detail later (^_^)/

[callmekohei]

Hello! I'm callmekohei!

So, I find cause.

It's just how to compile.

In case Fsharp, compile following:

$ fsharpc -g --optimize- abc.fsx

That's point is --optimize-.

It's not cause on sdb.

So, I close this issue.

Thank you (^_^)/

[callmekohei]

I wrote article about it.

see also: http://callmekohei00.hatenablog.com/entry/2017/12/07/202955