[K/N] Fix interop_objc_kt56402 with different GCs ^KT-56402

Merge-request: KT-MR-9865
Merged-by: Alexander Shabalin <[email protected]>

Author: projedi

kotlin-native/backend.native/tests/build.gradle

@@ -5291,7 +5291,9 @@ if (PlatformInfo.isAppleTarget(project)) {
 
     interopTest("interop_objc_kt56402") {
         // Test depends on macOS-specific AppKit
-        enabled = (project.testTarget == 'macos_x64' || project.testTarget == 'macos_arm64' || project.testTarget == null) && isExperimentalMM
+        enabled = (project.testTarget == 'macos_x64' || project.testTarget == 'macos_arm64' || project.testTarget == null)
+            && isExperimentalMM
+            && !isNoopGC // requires some GC
         source = 'interop/objc/kt56402/main.kt'
         interop = "objc_kt56402"
         flags = ["-tr", "-e", "runAllTests"] // Generate test suites, but use custom entrypoint.

kotlin-native/backend.native/tests/interop/objc/kt56402/main.kt

@@ -53,7 +53,12 @@ fun alloc(ctor: ((ULong) -> Unit) -> ULong): ULong = autoreleasepool {
 
 fun waitDestruction(id: ULong) {
     assertTrue(isMainThread())
-    kotlin.native.internal.GC.collect()
+    // Make sure the finalizers are not run on the main thread even for STMS.
+    withWorker {
+        execute(TransferMode.SAFE, {}) {
+            kotlin.native.internal.GC.collect()
+        }.result
+    }
     while (true) {
         spin()
         if (!(id in aliveObjectIds)) {