[PATCH v4 1/1] kernelbase: Workaound for SetCurrentDirectoryW misuse

[Lois Gomez]

From: Lois Gomez <csberto(a)gmail.com>

---
 dlls/ntdll/path.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/ntdll/path.c b/dlls/ntdll/path.c
index 8956ff07f6c..86b35495885 100644
--- a/dlls/ntdll/path.c
+++ b/dlls/ntdll/path.c
@@ -966,6 +966,13 @@ NTSTATUS WINAPI RtlSetCurrentDirectory_U(const UNICODE_STRING* dir)
     ptr = newdir.Buffer;
     ptr += 4;  /* skip \??\ prefix */
     size -= 4;
+
+    /* remove trailing '.' if present */
+    if (size && ptr[size - 1] == '.' && (size == 1 || ptr[size - 2] == '\\'))
+    {
+        size--;
+    }
+
     if (size && ptr[size - 1] != '\\') ptr[size++] = '\\';
 
     /* convert \??\UNC\ path to \\ prefix */
-- 
GitLab

https://gitlab.winehq.org/wine/wine/-/merge_requests/7023