Fixed #3585 (errors not recognized when class has extra specification)

lib/tokenize.cpp

@@ -1734,6 +1734,15 @@ bool Tokenizer::tokenize(std::istream &code,
             tok = tok->next();
     }
 
+    // class x y {
+    if (_settings->isEnabled("information")) {
+        for (const Token *tok = list.front(); tok; tok = tok->next()) {
+            if (Token::Match(tok, "class %type% %type% [:{]")) {
+                unhandled_macro_class_x_y(tok);
+            }
+        }
+    }
+
     // catch bad typedef canonicalization
     //
     // to reproduce bad typedef, download upx-ucl from:
@@ -7846,6 +7855,18 @@ void Tokenizer::syntaxError(const Token *tok, char c) const
                 "when these macros are defined: '" + _configuration + "'.");
 }
 
+void Tokenizer::unhandled_macro_class_x_y(const Token *tok)
+{
+    reportError(tok,
+                Severity::information,
+                "class_X_Y",
+                "The code '" +
+                tok->str() + " " +
+                tok->strAt(1) + " " +
+                tok->strAt(2) + " " +
+                tok->strAt(3) + "' is not handled. You can use -I or --include to add handling of this code.");
+}
+
 void Tokenizer::cppcheckError(const Token *tok) const
 {
     reportError(tok, Severity::error, "cppcheckError",

lib/tokenize.h

@@ -560,6 +560,9 @@ public:
     /** Syntax error. Example: invalid number of ')' */
     void syntaxError(const Token *tok, char c) const;
 
+    /** Report that there is an unhandled "class x y {" code */
+    void unhandled_macro_class_x_y(const Token *tok);
+
     /**
      * assert that tokens are ok - used during debugging for example
      * to catch problems in simplifyTokenList.

test/testtokenize.cpp

@@ -67,6 +67,7 @@ private:
         TEST_CASE(wrong_syntax3); // #3544
         TEST_CASE(wrong_syntax4); // #3618
         TEST_CASE(wrong_syntax_if_macro);  // #2518 - if MACRO()
+        TEST_CASE(wrong_syntax_class_x_y); // #3585 - class x y { };
         TEST_CASE(syntax_case_default);
         TEST_CASE(garbageCode1);
         TEST_CASE(garbageCode2); // #4300
@@ -771,6 +772,22 @@ private:
         ASSERT_EQUALS("[test.cpp:1]: (error) syntax error\n", errout.str());
     }
 
+    void wrong_syntax_class_x_y() {
+        // #3585
+        const char code[] = "class x y { };";
+
+        errout.str("");
+
+        Settings settings;
+        settings.addEnabled("information");
+        Tokenizer tokenizer(&settings, this);
+        std::istringstream istr(code);
+        tokenizer.tokenize(istr, "test.c");
+        tokenizer.simplifyTokenList();
+
+        ASSERT_EQUALS("[test.c:1]: (information) The code 'class x y {' is not handled. You can use -I or --include to add handling of this code.\n", errout.str());
+    }
+
     void syntax_case_default() {
         //correct syntax
         {