Calling noasync function inside a defer

[0xTim]

Description

When annotating a function as noasync, the compiler should produce a warning when calling that function from an async context - such as an async function. When calling a noasync function from a defer block inside an async function, the warning is not produced which can lead to unexpected behaviour.

Reproduction

@available(*, noasync, message: "Don't call async contexts")
func somethingSync() {
  print("Sync")
}

func asyncFunc() async {
  somethingSync() // This produces a warning

  defer {
    somethingSync() // This does not produce a warning but should
  }

  print("Async")
}

Expected behavior

The compiler should produce 2 warnings, for each call of somethingSync() inside asyncFunc. It currently only produces a warning for the call outside the defer block

Environment

swift-driver version: 1.90.11.1 Apple Swift version 5.10 (swiftlang-5.10.0.13 clang-1500.3.9.4)
Target: arm64-apple-macosx14.0

Additional information

No response