diff --git a/include/tclap/Arg.h b/include/tclap/Arg.h
index f8c4a5f..0ca6a3e 100644
--- a/include/tclap/Arg.h
+++ b/include/tclap/Arg.h
@@ -205,7 +205,7 @@ class Arg
 		 * The char used as a place holder when SwitchArgs are combined.
 		 * Currently set to the bell char (ASCII 7).
 		 */
-		static char blankChar() { return (char)7; }
+		static char blankChar() { return static_cast<char>(7); }
 
 		/**
 		 * The char that indicates the beginning of a flag.  Defaults to '-', but
diff --git a/include/tclap/ArgException.h b/include/tclap/ArgException.h
index 2102095..58cb06b 100644
--- a/include/tclap/ArgException.h
+++ b/include/tclap/ArgException.h
@@ -54,10 +54,6 @@ class ArgException : public std::exception
 			  _typeDescription(td)
 		{ } 
 		
-		/**
-		 * Destructor.
-		 */
-		virtual ~ArgException() throw() { }
 
 		/**
 		 * Returns the error text.
@@ -78,7 +74,7 @@ class ArgException : public std::exception
 		/**
 		 * Returns the arg id and error text. 
 		 */
-		const char* what() const throw() 
+		const char* what() const noexcept 
 		{
 			static std::string ex; 
 			ex = _argId + " -- " + _errorText;
diff --git a/include/tclap/ArgTraits.h b/include/tclap/ArgTraits.h
index 0ccf5e3..cd5d69f 100644
--- a/include/tclap/ArgTraits.h
+++ b/include/tclap/ArgTraits.h
@@ -38,7 +38,6 @@ namespace TCLAP {
  */
 struct ValueLike {
     typedef ValueLike ValueCategory;
-	virtual ~ValueLike() {}
 };
 
 /**
diff --git a/include/tclap/CmdLine.h b/include/tclap/CmdLine.h
index be78985..316f561 100644
--- a/include/tclap/CmdLine.h
+++ b/include/tclap/CmdLine.h
@@ -137,7 +137,7 @@ class CmdLine : public CmdLineInterface
 		/**
 		 * Throws an exception listing the missing args.
 		 */
-		void missingArgsException();
+		[[ noreturn ]] void missingArgsException();
 
 		/**
 		 * Checks whether a name/flag string matches entirely matches
@@ -533,7 +533,7 @@ inline bool CmdLine::_emptyCombined(const std::string& s)
 	return true;
 }
 
-inline void CmdLine::missingArgsException()
+[[ noreturn ]] inline void CmdLine::missingArgsException()
 {
 		int count = 0;