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struct A {
	const int j;
	virtual void foo() {}
};
 
int main() {
	//A a{};
	A * aa = new A();
	return 0;
}

prog.cpp:2:12: warning: non-static const member ‘const int A::j’ in class without a constructor [-Wuninitialized]
  const int j;
            ^
prog.cpp: In function ‘int main()’:
prog.cpp:8:17: error: use of deleted function ‘A::A()’
  A * aa = new A();
                 ^
prog.cpp:1:8: note: ‘A::A()’ is implicitly deleted because the default definition would be ill-formed:
 struct A {
        ^
prog.cpp:1:8: error: uninitialized non-static const member ‘const int A::j’
prog.cpp:8:6: warning: unused variable ‘aa’ [-Wunused-variable]
  A * aa = new A();
      ^

Standard output is empty