diff --git a/clang-tools-extra/clangd/refactor/tweaks/AddUsing.cpp b/clang-tools-extra/clangd/refactor/tweaks/AddUsing.cpp
--- a/clang-tools-extra/clangd/refactor/tweaks/AddUsing.cpp
+++ b/clang-tools-extra/clangd/refactor/tweaks/AddUsing.cpp
@@ -210,8 +210,10 @@
     return false;
 
   if (auto *D = Node->ASTNode.get<DeclRefExpr>()) {
-    QualifierToRemove = D->getQualifierLoc();
-    Name = D->getDecl()->getName();
+    if (auto *II = D->getDecl()->getIdentifier()) {
+      QualifierToRemove = D->getQualifierLoc();
+      Name = II->getName();
+    }
   } else if (auto *T = Node->ASTNode.get<TypeLoc>()) {
     if (auto E = T->getAs<ElaboratedTypeLoc>()) {
       if (auto *BaseTypeIdentifier =
diff --git a/clang-tools-extra/clangd/unittests/TweakTests.cpp b/clang-tools-extra/clangd/unittests/TweakTests.cpp
--- a/clang-tools-extra/clangd/unittests/TweakTests.cpp
+++ b/clang-tools-extra/clangd/unittests/TweakTests.cpp
@@ -2444,6 +2444,7 @@
 public:
   struct st {};
   static void mm() {}
+  cc operator|(const cc& x) const { return x; }
 };
 }
 })cpp";
@@ -2463,6 +2464,9 @@
   // test that we don't crash.
   EXPECT_UNAVAILABLE(Header +
                      "template<typename TT> using foo = one::tt<T^T>;");
+  // Test that we don't crash or misbehave on unnamed DeclRefExpr.
+  EXPECT_UNAVAILABLE(Header +
+                     "void fun() { one::two::cc() ^| one::two::cc(); }");
 
   // Check that we do not trigger in header files.
   FileName = "test.h";