[K/N] Deprecate -Xallocator=std ^KT-75918

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt

diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt
index aa91806..53d8a1b 100644
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt
+++ b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/SetupConfiguration.kt
@@ -280,7 +280,10 @@
     })
     putIfNotNull(ALLOCATION_MODE, when (arguments.allocator) {
         null -> null
-        "std" -> AllocationMode.STD
+        "std" -> {
+            report(STRONG_WARNING, "Std allocator is deprecated in Kotlin/Native compiler and will be removed in the future. Please consider using -Xbinary=pagedAllocator=false compiler flag instead.")
+            AllocationMode.STD
+        }
         "mimalloc" -> {
             report(ERROR, "Usage of mimalloc in Kotlin/Native compiler is deprecated. Please remove -Xallocator=mimalloc compiler flag.")
             AllocationMode.CUSTOM