Index: clang/lib/Format/TokenAnnotator.cpp
===================================================================
--- clang/lib/Format/TokenAnnotator.cpp
+++ clang/lib/Format/TokenAnnotator.cpp
@@ -1679,7 +1679,7 @@
       Current.setType(TT_LambdaArrow);
     } else if (Current.is(tok::arrow) && AutoFound && Line.MustBeDeclaration &&
                Current.NestingLevel == 0 &&
-               !Current.Previous->is(tok::kw_operator)) {
+               !Current.Previous->isOneOf(tok::kw_operator, tok::identifier)) {
       // not auto operator->() -> xxx;
       Current.setType(TT_TrailingReturnArrow);
     } else if (Current.is(tok::arrow) && Current.Previous &&
Index: clang/unittests/Format/FormatTest.cpp
===================================================================
--- clang/unittests/Format/FormatTest.cpp
+++ clang/unittests/Format/FormatTest.cpp
@@ -6719,6 +6719,8 @@
 
   // Not trailing return types.
   verifyFormat("void f() { auto a = b->c(); }");
+  verifyFormat("auto a = p->foo();");
+  verifyFormat("int a = p->foo();");
 }
 
 TEST_F(FormatTest, DeductionGuides) {