Build fix + temporarily disable for String

Author: Catfish-Man

stdlib/public/core/ContiguousArrayBuffer.swift

@@ -273,8 +273,8 @@ internal struct _ContiguousArrayBuffer<Element>: _ArrayBufferProtocol {
          _ContiguousArrayStorage<Element>.self,
          realMinimumCapacity._builtinWordValue, Element.self)
 
-      let storageAddr = UnsafeMutableRawPointer(Builtin.bridgeToRawPointer(_storage))
-      if let allocSize = _mallocSizeIfHeap(ofAllocation: storageAddr) {
+      if let allocSize = _mallocSizeIfHeap(of: _storage) {
+        let storageAddr = UnsafeMutableRawPointer(Builtin.bridgeToRawPointer(_storage))
         let endAddr = storageAddr + allocSize
         let realCapacity = endAddr.assumingMemoryBound(to: Element.self) - firstElementAddress
         _initStorageHeader(

stdlib/public/core/Shims.swift

@@ -45,9 +45,11 @@ internal func _mallocSize(ofAllocation ptr: UnsafeRawPointer) -> Int? {
   return _swift_stdlib_has_malloc_size() ? _swift_stdlib_malloc_size(ptr) : nil
 }
 
-@inline(__always) @inlinable @_effects(readonly)
-internal func _mallocSizeIfHeap(ofAllocation ptr: UnsafeRawPointer) -> Int? {
-  if Builtin.isOnStack(ptr) { return nil }
-  return _mallocSize(ofAllocation: ptr)
+@_transparent @inlinable @_effects(readonly)
+internal func _mallocSizeIfHeap(of object: AnyObject) -> Int? {
+  if Bool(Builtin.isOnStack(_nativeObject(fromNative: object))) { return nil }
+  return _mallocSize(
+    ofAllocation: UnsafeRawPointer(Builtin.bridgeToRawPointer(object))
+  )
 }
 

stdlib/public/core/StringStorage.swift

@@ -206,7 +206,7 @@ fileprivate func _allocate<T: AnyObject>(
   let totalTailBytes = total - numHeaderBytes
 
   let object = tailAllocator(totalTailBytes)
-  if let allocSize = _mallocSizeIfHeap(ofAllocation:
+  if let allocSize = _mallocSize(ofAllocation:
     UnsafeRawPointer(Builtin.bridgeToRawPointer(object))) {
     _internalInvariant(allocSize % MemoryLayout<Int>.stride == 0)