Code coverage reports a line as being covered when it isn't.

[jasonbobier]

Description
With code coverage, lines that aren’t executed after a throw still have their hit count incremented.

Steps to reproduce

1. Open the sample project
2. Run testExample() unit test
3. Notice in Throws.swift that the commented line shows 3 hits instead of 1

Expected behavior
The commented line should show 1 hit

Environment

• Swift compiler version info: swift-driver version: 1.62.15 Apple Swift version 5.7.2 (swiftlang-5.7.2.135.5 clang-1400.0.29.51)
  Target: arm64-apple-macosx13.0

• Xcode version info: Version 14.2 (14C18)

• Deployment target: macOS 13.1

Also reported as: FB7656633

CoverageBug.zip

[hamishknight]

This is a known issue, unfortunately. Code coverage currently does not take error handling control flow into account.

[jasonbobier]

Yow... that's pretty tough for those of us that use try/catch a lot.