diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -1786,6 +1786,9 @@
     case tok::l_paren:
       parseParens();
       break;
+    case tok::l_square:
+      parseSquare();
+      break;
     case tok::amp:
     case tok::star:
     case tok::kw_const:
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -20232,6 +20232,11 @@
                "};");
   verifyFormat("[]() -> Void<T...> {};");
   verifyFormat("[a, b]() -> Tuple<T...> { return {}; };");
+  verifyFormat("SomeFunction({[]() -> int[] { return {}; }});");
+  verifyFormat("SomeFunction({[]() -> int *[] { return {}; }});");
+  verifyFormat("SomeFunction({[]() -> int (*)[] { return {}; }});");
+  verifyFormat("SomeFunction({[]() -> ns::type<int (*)[]> { return {}; }});");
+  verifyFormat("return int{[x = x]() { return x; }()};");
 
   // Lambdas with explicit template argument lists.
   verifyFormat(