Refs #12655: add unknownMacro warning (#6361)

Author: chrchr-github

lib/tokenize.cpp

@@ -8674,8 +8674,6 @@ void Tokenizer::findGarbageCode() const
             if (Token::Match(tok->next(), ")|]|>|%assign%|%or%|%oror%|==|!=|/|>=|<=|&&"))
                 syntaxError(tok);
         }
-        if ((!isCPP() || !Token::simpleMatch(tok->previous(), "operator")) && Token::Match(tok, "[,;] ,"))
-            syntaxError(tok);
         if (Token::simpleMatch(tok, ".") &&
             !Token::simpleMatch(tok->previous(), ".") &&
             !Token::simpleMatch(tok->next(), ".") &&
@@ -8703,22 +8701,28 @@ void Tokenizer::findGarbageCode() const
             syntaxError(tok);
         if (Token::Match(tok, "! %comp%"))
             syntaxError(tok);
-        if (Token::Match(tok, "] %name%") && (!isCPP() || !(tok->tokAt(-1) && Token::simpleMatch(tok->tokAt(-2), "delete ["))))
-            syntaxError(tok);
+        if (Token::Match(tok, "] %name%") && (!isCPP() || !(tok->tokAt(-1) && Token::simpleMatch(tok->tokAt(-2), "delete [")))) {
+            if (tok->next()->isUpperCaseName())
+                unknownMacroError(tok->next());
+            else
+                syntaxError(tok);
+        }
 
         if (tok->link() && Token::Match(tok, "[([]") && (!tok->tokAt(-1) || !tok->tokAt(-1)->isControlFlowKeyword())) {
             const Token* const end = tok->link();
             for (const Token* inner = tok->next(); inner != end; inner = inner->next()) {
                 if (inner->str() == "{")
                     inner = inner->link();
-                else if (inner->str() == ";") {
+                else if (inner->str() == ";" || (Token::simpleMatch(inner, ", ,") && (!isCPP() || !Token::simpleMatch(inner->previous(), "operator")))) {
                     if (tok->tokAt(-1) && tok->tokAt(-1)->isUpperCaseName())
                         unknownMacroError(tok->tokAt(-1));
                     else
                         syntaxError(inner);
                 }
             }
         }
+        if ((!isCPP() || !Token::simpleMatch(tok->previous(), "operator")) && Token::Match(tok, "[,;] ,"))
+            syntaxError(tok);
     }
 
     // ternary operator without :

test/testgarbage.cpp

@@ -1214,7 +1214,7 @@ class TestGarbage : public TestFixture {
                                         "    typedef S0 b[][1][1] != 0\n"
                                         "};\n"
                                         "b[K][0] S0 b[][1][1] != 4{ 0 };\n"
-                                        "b[0][0]"), SYNTAX);
+                                        "b[0][0]"), UNKNOWN_MACRO);
     }
 
     void garbageCode149() { // #7085

test/testtokenize.cpp

@@ -7133,6 +7133,14 @@ class TestTokenizer : public TestFixture {
                             InternalError,
                             "There is an unknown macro here somewhere. Configuration is required. If MACRO is a macro then please configure it.");
 
+        ASSERT_THROW_EQUALS(tokenizeAndStringify("struct S { int a[2] PACKED; };\n"),
+                            InternalError,
+                            "There is an unknown macro here somewhere. Configuration is required. If PACKED is a macro then please configure it.");
+
+        ASSERT_THROW_EQUALS(tokenizeAndStringify("MACRO(a, b,,)\n"),
+                            InternalError,
+                            "There is an unknown macro here somewhere. Configuration is required. If MACRO is a macro then please configure it.");
+
         ASSERT_THROW_INTERNAL(tokenizeAndStringify("{ for (()()) }"), SYNTAX); // #11643
 
         ASSERT_NO_THROW(tokenizeAndStringify("S* g = ::new(ptr) S();")); // #12552