TASKING VX-toolset for ARM User Guide

C++ Language• When option --nonconst-ref-anachronism is set, a reference to a non-const class can be bound to aclass rvalue of the same type or a derived type thereof.struct A {A(int);A operator=(A&);A operator+(const A&);};main () {A b(1);b = A(1) + A(2); // Allowed as anachronism}2.2.4. Extensions Accepted in Normal C++ ModeThe following extensions are accepted in all modes (except when strict ANSI/ISO violations are diagnosedas errors or were explicitly noted):• A friend declaration for a class may omit the class keyword:class A {friend B; // Should be "friend class B"};• Constants of scalar type may be defined within classes:class A {const int size = 10;int a[size];};• In the declaration of a class member, a qualified name may be used:struct A {int A::f(); // Should be int f();};• The restrict keyword is allowed.• A const qualified object with file scope or namespace scope and the __at() attribute will have externallinkage, unless explicitly declared static. Examples:const int i = 5;// internal linkageconst int j __at( 0x1234 ) = 10;// external linkagestatic const int k __at( 0x1236 ) = 15; // internal linkageNote that no warning is generated when 'j' is not used.45