[clang-format] Correctly annotate return type of function pointer (llvm#66893)

Fixes llvm#66857.

Author: owenca

clang/lib/Format/TokenAnnotator.cpp

@@ -3144,8 +3144,12 @@ static FormatToken *getFunctionName(const AnnotatedLine &Line) {
     }
 
     // Make sure the name is followed by a pair of parentheses.
-    if (Name)
-      return Tok->is(tok::l_paren) && Tok->MatchingParen ? Name : nullptr;
+    if (Name) {
+      return Tok->is(tok::l_paren) && Tok->isNot(TT_FunctionTypeLParen) &&
+                     Tok->MatchingParen
+                 ? Name
+                 : nullptr;
+    }
 
     // Skip keywords that may precede the constructor/destructor name.
     if (Tok->isOneOf(tok::kw_friend, tok::kw_inline, tok::kw_virtual,

clang/unittests/Format/TokenAnnotatorTest.cpp

@@ -1655,6 +1655,13 @@ TEST_F(TokenAnnotatorTest, UnderstandsFunctionDeclarationNames) {
                     "FOO Foo();");
   ASSERT_EQ(Tokens.size(), 11u) << Tokens;
   EXPECT_TOKEN(Tokens[6], tok::identifier, TT_FunctionDeclarationName);
+
+  Tokens = annotate("struct Foo {\n"
+                    "  Bar (*func)();\n"
+                    "};");
+  ASSERT_EQ(Tokens.size(), 14u) << Tokens;
+  EXPECT_TOKEN(Tokens[3], tok::identifier, TT_Unknown);
+  EXPECT_TOKEN(Tokens[4], tok::l_paren, TT_FunctionTypeLParen);
 }
 
 TEST_F(TokenAnnotatorTest, UnderstandsC11GenericSelection) {