Update vf_analyzers.cpp

Author: chrchr-github

lib/vf_analyzers.cpp

@@ -1489,7 +1489,12 @@ struct ContainerExpressionAnalyzer : ExpressionAnalyzer {
             const Library::Container::Action action = container->getAction(tok->astParent()->strAt(1));
             if (action == Library::Container::Action::PUSH || action == Library::Container::Action::POP || action == Library::Container::Action::APPEND) { // TODO: handle more actions?
                 std::vector<const Token*> args = getArguments(tok->tokAt(3));
-                if (args.size() < 2 || action == Library::Container::Action::APPEND)
+                bool isVariadic = false;
+                if (const Library::Function* libFunc = settings.library.getFunction(tok->tokAt(2)); {
+                    const auto& argChecks = libFunc->argumentChecks;
+                    isVariadic = argChecks.find(-1) != argChecks.end() && argChecks.at(-1).variadic;
+                }
+                if (args.size() < 2 || action == Library::Container::Action::APPEND || isVariadic)
                     return Action::Read | Action::Write | Action::Incremental;
             }
         }