Use buffer.Length as the source of truth for ReadDirectoryChanges (#7…

…4023) Co-authored-by: David Cantú <dacantu@microsoft.com>
dotnet · Aug 17, 2022 · 12d9354 · 12d9354
1 parent 080f708
commit 12d9354
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/libraries/System.IO.FileSystem.Watcher/src/System/IO/FileSystemWatcher.Win32.cs b/src/libraries/System.IO.FileSystem.Watcher/src/System/IO/FileSystemWatcher.Win32.cs
@@ -158,7 +158,7 @@ private unsafe void Monitor(AsyncReadState state)
                 continueExecuting = Interop.Kernel32.ReadDirectoryChangesW(
                     state.DirectoryHandle,
                     state.Buffer, // the buffer is kept pinned for the duration of the sync and async operation by the PreAllocatedOverlapped
-                    _internalBufferSize,
+                    (uint)state.Buffer.Length,
                     _includeSubdirectories,
                     (uint)_notifyFilters,
                     null,