Fix #11332 Function::addArguments found argument 'b' with varid 0 wit… (#4506)

* Fix #11332 Function::addArguments found argument 'b' with varid 0 with lambda parameter

* Fix varid0 warning

lib/symboldatabase.cpp

@@ -4563,7 +4563,7 @@ const Token *Scope::checkVariable(const Token *tok, AccessControl varaccess, con
     }
 
     // skip const|volatile|static|mutable|extern
-    while (tok->isKeyword() && Token::Match(tok, "const|constexpr|volatile|static|mutable|extern")) {
+    while (tok && tok->isKeyword() && Token::Match(tok, "const|constexpr|volatile|static|mutable|extern")) {
         tok = tok->next();
     }
 
@@ -4580,7 +4580,7 @@ const Token *Scope::checkVariable(const Token *tok, AccessControl varaccess, con
         return typeend->linkAt(1);
     }
 
-    if (tok->isKeyword() && Token::Match(tok, "class|struct|union|enum")) {
+    while (tok && tok->isKeyword() && Token::Match(tok, "class|struct|union|enum")) {
         tok = tok->next();
     }
 

lib/tokenize.cpp

@@ -3973,7 +3973,7 @@ void Tokenizer::setVarIdPass1()
              Token::Match(tok, "[;{}]") ||
              (tok->str() == "(" && isFunctionHead(tok,"{")) ||
              (tok->str() == "(" && !scopeStack.top().isExecutable && isFunctionHead(tok,";:")) ||
-             (tok->str() == "," && (!scopeStack.top().isExecutable || inlineFunction)) ||
+             (tok->str() == "," && (!scopeStack.top().isExecutable || inlineFunction || !tok->previous()->varId())) ||
              (tok->isName() && endsWith(tok->str(), ':')))) {
 
             // No variable declarations in sizeof

test/testsymboldatabase.cpp

@@ -379,6 +379,7 @@ private:
         TEST_CASE(enum8);
         TEST_CASE(enum9);
         TEST_CASE(enum10); // #11001
+        TEST_CASE(enum11);
 
         TEST_CASE(sizeOfType);
 
@@ -5367,6 +5368,11 @@ private:
         ASSERT_EQUALS(Y->value, 1);
     }
 
+    void enum11() {
+        check("enum class E;\n");
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void sizeOfType() {
         // #7615 - crash in Symboldatabase::sizeOfType()
         GET_SYMBOL_DB("enum e;\n"

test/testvarid.cpp

@@ -2761,6 +2761,16 @@ private:
                                "5: } ;\n";
             ASSERT_EQUALS(exp, tokenize(code));
         }
+        // # 11332
+        {
+            const char code[] = "auto a() {\n"
+                                "    return [](int, int b) {};\n"
+                                "}\n";
+            const char exp[] = "1: auto a ( ) {\n"
+                               "2: return [ ] ( int , int b@1 ) { } ;\n"
+                               "3: }\n";
+            ASSERT_EQUALS(exp, tokenize(code));
+        }
     }
 
     void varid_lambda_mutable() {