4 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Support/Error.cpp b/llvm/lib/Support/Error.cpp
index 0b0be8d48fa..bb5c31a2a35 100644
--- a/llvm/lib/Support/Error.cpp
+++ b/llvm/lib/Support/Error.cpp
@@ -54,6 +54,7 @@ namespace llvm {
 void ErrorInfoBase::anchor() {}
 char ErrorInfoBase::ID = 0;
 char ErrorList::ID = 0;
+void ECError::anchor() {};
 char ECError::ID = 0;
 char StringError::ID = 0;
 char FileError::ID = 0;
diff --git a/llvm/lib/Support/FormatVariadic.cpp b/llvm/lib/Support/FormatVariadic.cpp
index 6dd133e6c50..1f3505d5f74 100644
--- a/llvm/lib/Support/FormatVariadic.cpp
+++ b/llvm/lib/Support/FormatVariadic.cpp
@@ -152,3 +152,5 @@ formatv_object_base::parseFormatString(StringRef Fmt) {
   }
   return Replacements;
 }
+
+void detail::format_adapter::anchor() { }
diff --git a/llvm/lib/Support/VirtualFileSystem.cpp b/llvm/lib/Support/VirtualFileSystem.cpp
index 24581944fa8..360f8d0061f 100644
--- a/llvm/lib/Support/VirtualFileSystem.cpp
+++ b/llvm/lib/Support/VirtualFileSystem.cpp
@@ -472,6 +472,8 @@ directory_iterator OverlayFileSystem::dir_begin(const Twine &Dir,
       std::make_shared<OverlayFSDirIterImpl>(Dir, *this, EC));
 }
 
+void ProxyFileSystem::anchor() {}
+
 namespace llvm {
 namespace vfs {
 
diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
index 81df38f341c..21dde7ff914 100644
--- a/llvm/lib/Support/raw_ostream.cpp
+++ b/llvm/lib/Support/raw_ostream.cpp
@@ -914,3 +914,5 @@ void raw_null_ostream::pwrite_impl(const char *Ptr, size_t Size,
                                    uint64_t Offset) {}
 
 void raw_pwrite_stream::anchor() {}
+
+void buffer_ostream::anchor() {}