dotnet/roslyn

Do not get access to "this" in breakpoint conditions for expression properties/methods

Open

#23,892 opened on Dec 21, 2017

View on GitHub
 (0 comments) (0 reactions) (0 assignees)C# (20,414 stars) (4,257 forks)batch import
Area-InteractiveBugInteractive-Debugginghelp wanted

Description

Version Used: Version 15.6.0 Preview 1.1 [27217.0.d15.6]

Steps to Reproduce:

    class Program
    {
        private readonly string _foo;

        public string Foo => _foo; // Location 1

        public string FooBar() => _foo; // Location 2
    }
  1. Set a breakpoint on Location 1 and Location 2
  2. Right-click breakpoint and choose Conditions
  3. Check conditions and in expression text box, type this.

Expected Behavior: For completion window to open and get intellisense for members of the class (ie _foo)

Actual Behavior: Actual, completion window doesn't open. If you force it open CTRL+Space there's no access to "this" members

Contributor guide

Tech stack
csharp
Domain
toolingdeveloper experience
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
C#Roslyn debuggerExpression bodied members
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
35
Research direction
Investigate the breakpoint condition evaluation code in the Roslyn debugger, likely in the expression evaluator component. Focus on how 'this' is bound for expression bodied members versus regular methods. Check if the issue is related to the synthetic property getter method not providing the same binding context. Look for existing tests or similar bug fixes in the debugger area.