Comments (9)
tamizhvendan
commented on August 21, 2024
I guess it is something similar to this issue. Some internal code while initializing the type provider is causing the issue. I tried to attach debugger and troubleshoot but it didn't work out as we can't open more than one instance of VS for Mac :(
Is there any way that I can troubleshoot this to find the actual error?
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rspeele
commented on August 21, 2024
Hi,
Thanks for the bug report. A good way to troubleshoot it further would be to use the type provider from a .fsx script file and attach the debugger to fsi.exe. Rezoom.SQL.Provider has an example of this if you F5 it in debug configuration.
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tamizhvendan
commented on August 21, 2024
Thanks @rspeele
Unfortunately, it didn't work!
/~/temp/Rezoom.SQL/src/Rezoom.SQL.Provider/user.fsx(15,10): error FS3033: The type provider 'Rezoom.SQL.Provider.Provider' reported an error: Object reference not set to an instance of an object
mono_os_mutex_lock: pthread_mutex_lock failed with "Invalid argument" (22)
Stacktrace:
at <unknown> <0xffffffff>
at System.IO.KqueueMonitor.CleanUp () [0x00053] in <70507a44a84041d599bbfa8f3d0ea5b1>:0
at System.IO.KqueueMonitor.DoMonitor () [0x00051] in <70507a44a84041d599bbfa8f3d0ea5b1>:0
at System.IO.KqueueMonitor.<Start>b__5_0 () [0x00000] in <70507a44a84041d599bbfa8f3d0ea5b1>:0
at System.Threading.ThreadHelper.ThreadStart_Context (object) [0x00014] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00071] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool) [0x00000] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object) [0x0002b] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
at System.Threading.ThreadHelper.ThreadStart () [0x00008] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
at (wrapper runtime-invoke) object.runtime_invoke_void__this__ (object,intptr,intptr,intptr) [0x0004d] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
Native stacktrace:
0 mono 0x000000010f9f6061 mono_handle_native_crash + 257
1 libsystem_platform.dylib 0x00007fff8c5afb3a _sigtramp + 26
2 ??? 0x000070000cd9bfe0 0x0 + 123145517907936
3 libsystem_c.dylib 0x00007fff8c434420 abort + 129
4 mono 0x000000010fbcd591 mono_log_write_logfile + 353
5 mono 0x000000010fbe4740 monoeg_g_log + 208
6 mono 0x000000010fac63d1 mono_marshal_find_in_cache + 129
7 mono 0x000000010face23f mono_marshal_get_native_wrapper + 223
8 mono 0x000000010f9456f0 mono_jit_compile_method_inner + 384
9 mono 0x000000010f94884a mono_jit_compile_method_with_opt + 714
10 mono 0x000000010f9f866f common_call_trampoline + 1199
11 mono 0x000000010f9f8189 mono_magic_trampoline + 73
12 ??? 0x000000010fdad39e 0x0 + 4560966558
13 ??? 0x0000000118e3a5c9 0x0 + 4712539593
14 ??? 0x0000000118d8aa1e 0x0 + 4711819806
15 ??? 0x0000000118d8a7f5 0x0 + 4711819253
16 mscorlib.dll.dylib 0x00000001119cde11 System_Threading_ExecutionContext_Run_System_Threading_ExecutionContext_System_Threading_ContextCallback_object_bool + 33
17 mono 0x000000010f94c505 mono_jit_runtime_invoke + 2245
18 mono 0x000000010fb4dd48 do_runtime_invoke + 88
19 mono 0x000000010fb19a9e start_wrapper + 766
20 libsystem_pthread.dylib 0x00007fff8c5b993b _pthread_body + 180
21 libsystem_pthread.dylib 0x00007fff8c5b9887 _pthread_body + 0
22 libsystem_pthread.dylib 0x00007fff8c5b908d thread_start + 13
Debug info from gdb:
(lldb) command source -s 0 '/tmp/mono-gdb-commands.TCzxrT'
Executing commands in '/tmp/mono-gdb-commands.TCzxrT'.
(lldb) process attach --pid 32058
error: attach failed: unable to attach
The application was terminated by a signal: SIGHUP
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tamizhvendan
commented on August 21, 2024
I tried to troubleshoot this using printfn as suggested.
For this code in user.fsx
type QueryWithNullablePar = SQL<"""
select * from Users u
where u.Name is @name
""", "user-migrations">I put printfn in these places
Provider.fs
do
printfn "initializing #2" // <----
let tys = [ sqlTy; modelTy ]
tmpAssembly.AddTypes(tys)
this.AddNamespace(rootNamespace, tys)
modelCache.Invalidated.Add(fun _ -> this.Invalidate())
this.Disposing.Add(fun _ -> modelCache.Dispose())
printfn "init success" // <----
static do
printfn "initializing #1" // <----
System.AppDomain.CurrentDomain.add_AssemblyResolve(fun _ args ->
AssemblyResolver.resolve args.Name |> Option.toObj)TypeGeneration.fs
let generateSQLType (generate : GenerateType) (sql : string) =
printfn "generating SQL Type" // <----
// ...
provided.AddMember <| generateCommandMethod generate commandEffect commandType commandCtorMethod
printfn "generated SQL type" // <----
providedHere is the output that I got
initializing #1
initializing #2
init success
generating SQL Type
generated SQL type
/Users/tamizhvendan/TamizhWorks/temp/Rezoom.SQL/src/Rezoom.SQL.Provider/user.fsx(15,29): error FS3033: The type provider 'Rezoom.SQL.Provider.Provider' reported an error: Object reference not set to an instance of an objectI guess I am able to troubleshoot it using printfn. It would be helpful if you can help me in placing the print statements in the codebase to identify the root cause
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rspeele
commented on August 21, 2024
I haven't the slightest clue where that NRE might be coming from, but I think using this event handler to do some logging might help you obtain a useful stack trace:
https://msdn.microsoft.com/en-us/library/system.appdomain.firstchanceexception.aspx
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tamizhvendan
commented on August 21, 2024
Unfortunately, it didn't trap the exception!
Hi @ovatsus, @andrevdm, Can you folks help here? it is similar to the Fsharp.Data issue but we couldn't able to debug/troubleshoot it
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tamizhvendan
commented on August 21, 2024
@rspeele Is it because of the error being discussed in SO
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rspeele
commented on August 21, 2024
Leaving a note here that this might fix it:
fsprojects/FSharp.TypeProviders.SDK#121
I'm on Windows only at the moment and not able to quickly repro the original issue so I can't tell if upgrading the ProvidedTypes.fs helps at all.
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Swoorup
commented on August 21, 2024
I tested on ubuntu with Mono 6.0.0 Preview and 5.20.1 Stable (5.20.1.19). Can confirm we still run into the same issue.
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