diff --git a/clang-tools-extra/clangd/InlayHints.cpp b/clang-tools-extra/clangd/InlayHints.cpp
--- a/clang-tools-extra/clangd/InlayHints.cpp
+++ b/clang-tools-extra/clangd/InlayHints.cpp
@@ -137,6 +137,8 @@
   if (!Fields)
     return;
   for (const Expr *Init : Sem->inits()) {
+    if (!Init)
+      continue;
     auto Next = llvm::make_scope_exit([&, Size(Prefix.size())] {
       Fields.next();       // Always advance to the next subobject name.
       Prefix.resize(Size); // Erase any designator we appended.
diff --git a/clang-tools-extra/clangd/unittests/InlayHintTests.cpp b/clang-tools-extra/clangd/unittests/InlayHintTests.cpp
--- a/clang-tools-extra/clangd/unittests/InlayHintTests.cpp
+++ b/clang-tools-extra/clangd/unittests/InlayHintTests.cpp
@@ -1417,6 +1417,19 @@
   )cpp" /*no designator hints expected (but param hints!)*/);
 }
 
+TEST(DesignatorHints, NoCrash) {
+  assertDesignatorHints(R"cpp(
+    /*error-ok*/
+    class A {};
+    struct Foo { int b; };
+    Foo foo() {
+      return {
+        .b = A(),
+      };
+    }
+  )cpp" /*no crash*/);
+}
+
 TEST(InlayHints, RestrictRange) {
   Annotations Code(R"cpp(
     auto a = false;