dotnet/roslyn

Improve pointer dereference message clarity

Open

#60,362 opened on Mar 24, 2022

View on GitHub
 (1 comment) (0 reactions) (0 assignees)C# (4,257 forks)batch import
Concept-Diagnostic ClarityFeature - Function Pointershelp wanted

Repository metrics

Stars
 (20,414 stars)
PR merge metrics
 (Avg merge 6d 17h) (256 merged PRs in 30d)

Description

    public unsafe void M(delegate*<void> d) {
        d->Invoke();
    }

This currently gives error CS0193: The * or -> operator must be applied to a pointer. Function pointers are pointers, but they can't be dereferenced and the error could be improved.

Contributor guide

Research direction
Find where error CS0193 is emitted in the Roslyn source and modify the message to indicate function pointers cannot be dereferenced.
Tech stack
csharp
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C#
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
55