Fix #12208 FN constParameterReference with nested struct/class (#5685)

Author: chrchr-github

lib/symboldatabase.cpp

@@ -5867,8 +5867,11 @@ const Function* SymbolDatabase::findFunction(const Token* const tok) const
             if (tok1)
                 tok1 = tok1->tokAt(2);
 
-            if (currScope && tok1)
-                return currScope->findFunction(tok1);
+            if (currScope && tok1) {
+                const Function* func = currScope->findFunction(tok1);
+                if (func)
+                    return func;
+            }
         }
     }
 

lib/valueflow.cpp

@@ -127,7 +127,7 @@
 #include <unordered_set>
 #include <vector>
 
-static void bailoutInternal(const std::string& type, TokenList &tokenlist, ErrorLogger *errorLogger, const Token *tok, const std::string &what, const std::string &file, int line, std::string function)
+static void bailoutInternal(const std::string& type, const TokenList &tokenlist, ErrorLogger *errorLogger, const Token *tok, const std::string &what, const std::string &file, int line, std::string function)
 {
     if (function.find("operator") != std::string::npos)
         function = "(valueFlow)";
@@ -4011,7 +4011,7 @@ struct LifetimeStore {
         }
     }
 
-    static LifetimeStore fromFunctionArg(const Function * f, const Token *tok, const Variable *var, TokenList &tokenlist, const Settings* settings, ErrorLogger *errorLogger) {
+    static LifetimeStore fromFunctionArg(const Function * f, const Token *tok, const Variable *var, const TokenList &tokenlist, const Settings* settings, ErrorLogger *errorLogger) {
         if (!var)
             return LifetimeStore{};
         if (!var->isArgument())
@@ -7038,7 +7038,7 @@ static void valueFlowForLoopSimplify(Token* const bodyStart,
                                      const Token* expr,
                                      bool globalvar,
                                      const MathLib::bigint value,
-                                     TokenList& tokenlist,
+                                     const TokenList& tokenlist,
                                      ErrorLogger* errorLogger,
                                      const Settings* settings)
 {

test/testsymboldatabase.cpp

@@ -452,6 +452,7 @@ class TestSymbolDatabase : public TestFixture {
         TEST_CASE(findFunction50); // #11904 - method with same name and arguments in derived class
         TEST_CASE(findFunction51); // #11975 - method with same name in derived class
         TEST_CASE(findFunction52);
+        TEST_CASE(findFunction53);
         TEST_CASE(findFunctionContainer);
         TEST_CASE(findFunctionExternC);
         TEST_CASE(findFunctionGlobalScope); // ::foo
@@ -7671,6 +7672,21 @@ class TestSymbolDatabase : public TestFixture {
         ASSERT(g->function()->tokenDef->linenr() == 1);
     }
 
+    void findFunction53() {
+        GET_SYMBOL_DB("namespace N {\n" // #12208
+                      "    struct S {\n"
+                      "        S(const int*);\n"
+                      "    };\n"
+                      "}\n"
+                      "void f(int& r) {\n"
+                      "    N::S(&r);\n"
+                      "}\n");
+        const Token* S = Token::findsimplematch(tokenizer.tokens(), "S ( &");
+        ASSERT(S->function() && S->function()->tokenDef);
+        ASSERT(S->function()->tokenDef->linenr() == 3);
+        ASSERT(S->function()->isConstructor());
+    }
+
     void findFunctionContainer() {
         {
             GET_SYMBOL_DB("void dostuff(std::vector<int> v);\n"