C++ Wunused-variable with std::uniqe_ptr

Asked Apr 23 '18 at 11:25

Active Apr 23 '18 at 11:25

Viewed 68 times

#include <memory>
int main() {
  std::unique_ptr<int> i = nullptr;
return 1;
}

Why won't this give me a -Wunused-variable warning (yes, they are enabled)?

(gcc version 7.3.1 20180303 (Red Hat 7.3.1-5) (GCC))

Cheers & thanks,

meru

asked Apr 23 '18 at 11:25

user3895986

2

Because this warning is not issues for objects with non-trivial constructors / destructors maybe? – user7860670 Apr 23 '18 at 11:31
4

... because defining a variable of a non-trivial type might have side effects. – YSC Apr 23 '18 at 11:34
Ah, of course - silly me! Thanks :) – user3895986 Apr 23 '18 at 11:35

0 Answers0