Fix #14324 syntaxError for enum member declared as bitfield

lib/tokenize.cpp

@@ -10078,17 +10078,7 @@ void Tokenizer::simplifyBitfields()
         if (!Token::Match(tok, ";|{|}|public:|protected:|private:"))
             continue;
 
-        bool isEnum = false;
-        if (tok->str() == "}") {
-            const Token *type = tok->link()->previous();
-            while (type && type->isName()) {
-                if (type->str() == "enum") {
-                    isEnum = true;
-                    break;
-                }
-                type = type->previous();
-            }
-        }
+        const bool isEnum = tok->str() == "}" && isEnumStart(tok->link());
 
         const auto tooLargeError = [this](const Token *tok) {
             const auto max = std::numeric_limits<short>::max();

test/testtokenize.cpp

@@ -4939,6 +4939,20 @@ class TestTokenizer : public TestFixture {
                       tokenizeAndStringify("struct AB {\n"
                                            "  enum Foo {A,B} foo : 4;\n"
                                            "};"));
+
+        ASSERT_EQUALS("struct S {\n" // #14324
+                      "enum E : int { E0 , E1 } ; enum E e ;\n"
+                      "} ;",
+                      tokenizeAndStringify("struct S {\n"
+                                           "    enum E : int { E0, E1 } e : 2;\n"
+                                           "};\n"));
+
+        ASSERT_EQUALS("struct S {\n"
+                      "enum class E : std :: uint8_t { E0 , E1 } ; enum E e ;\n"
+                      "} ;",
+                      tokenizeAndStringify("struct S {\n"
+                                           "    enum class E : std::uint8_t { E0, E1 } e : 2;\n"
+                                           "};\n"));
     }
 
     void bitfields16() {