breakpoint not breaking

[mrj001]

Expected results: stop at breakpoint.
Actual results: program ran to completion without stopping

How to reproduce. I got the syntax for the bpmd command from dotnet/runtime#10438.

$ mkdir NoBreak
$ cd NoBreak
$ dotnet new solution
The template "Solution File" was created successfully.
$ dotnet new Console -n Hello
The template "Console Application" was created successfully.

Processing post-creation actions...
Running 'dotnet restore' on Hello/Hello.csproj...
Determining projects to restore...
Restored /Users/mj/Documents/develop/diagnostics.issues/NoBreak/Hello/Hello.csproj (in 137 ms).
Restore succeeded.

$ dotnet sln NoBreak.sln add Hello/Hello.csproj
Project Hello/Hello.csproj added to the solution.
$ dotnet build
Microsoft (R) Build Engine version 16.7.0-preview-20360-03+188921e2f for .NET
Copyright (C) Microsoft Corporation. All rights reserved.

Determining projects to restore...
All projects are up-to-date for restore.
You are using a preview version of .NET. See: https://aka.ms/dotnet-core-preview
Hello -> /Users/mj/Documents/develop/diagnostics.issues/NoBreak/Hello/bin/Debug/net5.0/Hello.dll

Build succeeded.
0 Warning(s)
0 Error(s)

Time Elapsed 00:00:05.93
$ lldb dotnet
Added Microsoft public symbol server
(lldb) target create "dotnet"
Current executable set to 'dotnet' (x86_64).
(lldb) process launch -s -- run -p Hello
Process 47821 stopped

• thread WIP: repo consolidation scouting kick-off - make clr build locally on Windows runtime#1, stop reason = signal SIGSTOP
  frame #0: 0x0000000100017000 dyld_dyld_start dyld_dyld_start:
  -> 0x100017000 <+0>: popq %rdi
  0x100017001 <+1>: pushq $0x0
  0x100017003 <+3>: movq %rsp, %rbp
  0x100017006 <+6>: andq $-0x10, %rsp
  Target 0: (dotnet) stopped.
  Process 47821 launched: '/Users/mj/Documents/develop/runtime/.dotnet/dotnet' (x86_64)
  (lldb) bpmd Hello.dll Hello.Program.Main
  (lldb) continue
  Process 47821 resuming
  1 location added to breakpoint 1
  Hello World!
  Process 47821 exited with status = 0 (0x00000000)
  (lldb) quit

Here is my dotnet --info output:

.NET SDK (reflecting any global.json):
Version: 5.0.100-preview.8.20362.3
Commit: a5c8f426c2

Runtime Environment:
OS Name: Mac OS X
OS Version: 10.15
OS Platform: Darwin
RID: osx.10.15-x64
Base Path: /Users/mj/Documents/develop/runtime/.dotnet/sdk/5.0.100-preview.8.20362.3/

Host (useful for support):
Version: 5.0.0-preview.8.20361.2
Commit: f37dd6fc85

.NET SDKs installed:
5.0.100-preview.8.20362.3 [/Users/mj/Documents/develop/runtime/.dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 5.0.0-preview.8.20360.11 [/Users/mj/Documents/develop/runtime/.dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 5.0.0-preview.8.20361.2 [/Users/mj/Documents/develop/runtime/.dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

[Dotnet-GitSync-Bot]

I couldn't figure out the best area label to add to this issue. If you have write-permissions please help me learn by adding exactly one area label.

[hoyosjs]

Since this is a SOS command, I'm transferring this.

cc: @mikem8361

[mikem8361]

The problem is how you are launching dotnet/Hello. Using process launch -s -- run -p Hello launches another instance of dotnet which is what lldb is debugging. What you want is to launch Hello directly: process launch -s -- /Users/mikem/builds/NoBreak/Hello/bin/Debug/net5.0/Hello.dll without using the run subcommand. Your breakpoint on Main should work.

[mikem8361]

Are you still having problems? Can I close this issue?

[mrj001]

Yes. This worked. This is not obvious. I expected to run it the same way I would from the command line in the project folder. i.e. by running the project rather than the dll directly.

Is there some documentation I missed? Otherwise, it's ok to close the issue.

[mikem8361]

It doesn't mention this explicitly but this doc has some info on dotnet run limitations: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-run