1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Support/Path.cpp b/llvm/lib/Support/Path.cpp
index 973b903..9575e34 100644
--- a/llvm/lib/Support/Path.cpp
+++ b/llvm/lib/Support/Path.cpp
@@ -760,11 +760,15 @@ bool remove_dots(SmallVectorImpl<char> &the_path, bool remove_dot_dot,
     }
   }
 
+  SmallString<256> buffer = root;
+  // "root" could be "/", which may need to be translated into "\".
+  make_preferred(buffer, style);
+  needs_change |= root != buffer;
+
   // Avoid rewriting the path unless we have to.
   if (!needs_change)
     return false;
 
-  SmallString<256> buffer = root;
   if (!components.empty()) {
     buffer += components[0];
     for (StringRef C : makeArrayRef(components).drop_front()) {