swiftlang/swift-package-manager

`containsAtMain` does not handle `@main` on the same line as a multi-line end comment

Open

#9,685 opened on Feb 5, 2026

View on GitHub
 (1 comment) (0 reactions) (0 assignees)Swift (1,462 forks)batch import
good first issue

Repository metrics

Stars
 (10,145 stars)
PR merge metrics
 (Avg merge 8d 1h) (76 merged PRs in 30d)

Description

The containsAtMain function call does not correctly return true with the following input

                /*
                This is a multi-line comment
                /* @main
                struct MyApp {
                    static func main() {
                        print("Hello, World!")
                    }
                }

Search for the GitHub issue in the swift-package-manager repository to located an impacted automated test

Contributor guide

Research direction
Locate the existing test for `containsAtMain` in the repository and verify its failure with the provided input. Then trace the function logic to identify why multi line end comments are mishandled.
Tech stack
swift
Domain
tooling
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
Swift
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75