Fix #filePath mis-threading.

[dabrahams]

No description provided.

[dabrahams]

@saeta Tester seems to be using an outdated compiler?

[saeta]

From console output, the compiler version provided by Ubuntu / GitHub on Linux is:

Run swift --version
Swift version 5.2.5 (swift-5.2.5-RELEASE)
Target: x86_64-unknown-linux-gnu

And for macOS it's:

Run swift --version
Apple Swift version 5.2.4 (swiftlang-1103.0.32.9 clang-1103.0.32.53)
Target: x86_64-apple-darwin19.6.0

So, it seems like we need to wait for Swiftc 5.3 to land in GitHub's standard CI environments before merging this, right?

[dabrahams]

So, it seems like we need to wait for Swiftc 5.3 to land in GitHub's standard CI environments before merging this, right?

Ah guess so?

[MaxDesiatov]

Ubuntu 20.04 does have Swift 5.3, and macOS images have latest Xcode too, it's enough to run something like sudo xcode-select --switch /Applications/Xcode_12.1.app/Contents/Developer within your action to enable it.

[dabrahams]

@saeta Either way, PTAL since I've now made the PR compatible with all versions of Swift.

Note: I did try factoring out common code on one file and it was not an obvious improvement. We could use gyb…