diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -2400,6 +2400,8 @@
     return true;
   for (const FormatToken *Tok = Next->Next; Tok && Tok != Next->MatchingParen;
        Tok = Tok->Next) {
+    if (Tok->is(TT_TypeDeclarationParen))
+      return true;
     if (Tok->isOneOf(tok::l_paren, TT_TemplateOpener) && Tok->MatchingParen) {
       Tok = Tok->MatchingParen;
       continue;
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
@@ -6681,9 +6681,12 @@
                Style);
 
   // All declarations and definitions should have the return type moved to its
-  // own
-  // line.
+  // own line.
   Style.AlwaysBreakAfterReturnType = FormatStyle::RTBS_All;
+  Style.TypenameMacros = {"LIST"};
+  verifyFormat("SomeType\n"
+               "funcdecl(LIST(uint64_t));",
+               Style);
   verifyFormat("class E {\n"
                "  int\n"
                "  f() {\n"