Default swift-format breaks my program (stops compiling) because it reorders imports that are order sensitive #933
Description
Consider this program
@preconcurrency import Glibc
import Foundation
await Task {
_ = fputs("hello\n", stderr)
}.value
compiles and runs just fine:
root@95a2c6e555af:/tmp/x# swiftc -swift-version 6 test.swift && echo OK
OK
But running swift-format (default config) on it, breaks it:
$ swift format --in-place test.swift && swiftc -swift-version 6 test.swift && echo OK
test.swift:5:24: error: reference to var 'stderr' is not concurrency-safe because it involves shared mutable state
3 |
4 | await Task {
5 | _ = fputs("hello\n", stderr)
| `- error: reference to var 'stderr' is not concurrency-safe because it involves shared mutable state
6 | }.value
7 |
SwiftGlibc.stderr:1:12: note: var declared here
1 | public var stderr: UnsafeMutablePointer<FILE>!
| `- note: var declared here
This is because it changed the order of the imports from the correct
@preconcurrency import Glibc
import Foundation
to the incorrect
import Foundation
@preconcurrency import Glibc
This is swift-format from
Swift version 6.0.2 (swift-6.0.2-RELEASE)
Target: aarch64-unknown-linux-gnu
Related issues: