dotnet/roslyn

Hovering over cast evaluates property value in debugger

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#33,252 opened on Feb 8, 2019

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Area-InteractiveBugInteractive-Debugginghelp wanted

Description

Version Used: Visual Studio 2019 Preview 2

馃敆 Originally filed as https://devdiv.visualstudio.com/DevDiv/_workitems/edit/233955

Steps to Reproduce:

  1. Create a new WPF application

  2. In the main window constructor, add the following:

    BooleanToVisibilityConverter converter = new BooleanToVisibilityConverter();
Visibility x = (Visibility)converter.Convert(true, null, null, null);

  3. Set a breakpoint on one of the lines above

  4. When the breakpoint is hit, hover over the (Visibility) type cast

Expected Behavior:

Quick Info is not shown (default behavior for hovering over a type while debugging).

Actual Behavior:

Quick Info shows the value of this.Visibility (default behavior for hovering over a property while debugging).

Contributor guide

Tech stack
csharp
Domain
developer experiencetooling
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
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 compilerDebugger expression evaluator
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate the debugger's expression evaluator in the Roslyn codebase, particularly the logic for displaying Quick Info on hover. Look at files related to the debugger's binding and evaluation of type casts. Verify if the issue persists in the latest version of Visual Studio. Review any linked issues or similar bugs that may have been fixed.
Hovering over cast evaluates property value in debugger 路 dotnet/roslyn#33252 | Good First Issue