A lot of "implicitly-declared '[...]::operator=([...])' is deprecated" error in the Opensplice when compiling with gcc11

Question

I am using Opensplice library in my project and everything is working with gcc4. I am would like to compile my project with gcc11 but I get a lot of the same errors in the Opensplice section. For example:

implicitly-declared ‘dds::core::status::SampleRejectedState& dds::core::status::SampleRejectedState::operator=(const dds::core::status::SampleRejectedState&)’ is deprecated

I know that we should define both the assignment operator and copy constructor or neither of them in gcc11. But, how can I fix this issue for Opensplice? Can I build Opensplice again with gcc11 or I should do something else?

"... is deprecated" should be a warning not an error. Is it an error? — 463035818_is_not_an_ai, Oct 19 '22 at 08:32
gcc11 is using a different C++ standard by default. You can still use an older one `-std=c++03`. Or do you need to compile as C++11? — 463035818_is_not_an_ai, Oct 19 '22 at 08:42
fwiw, also gccs complete error message should tell you that its a warning treated as error due to `Werror` — 463035818_is_not_an_ai, Oct 19 '22 at 08:43
The question is that if I add "QMAKE_CXXFLAGS += Werror=depricated-copy" to my project, then the compiled code is still correct or not yet? — Ehsan Sharifi Esfahani, Oct 19 '22 at 08:44
It *is* correct. Deprecated is not removed. Future standard versions may disable the auto-generation in the circumstances where the warning is fired, but that hasn't happened yet to my knowledge. — StoryTeller - Unslander Monica, Oct 19 '22 at 08:46
@EhsanSharifiEsfahani You mean `Wno-error=depricated-copy`? The deprecation warning is just that. It has no effect on the program behavior in current C++ standards (and I have some doubts that the deprecated implicit function will ever be removed in future standard revisions). — user17732522, Oct 19 '22 at 08:50
Of course you can ask the library vendor to fix their code to not use deprecated features. It is as simply as adding `SampleRejectedState& operator=(const SampleRejectedState&) = default;`. (Assuming that the implicit assignment operator is not itself a mistake, which it often would be under the deprecation circumstances.) — user17732522, Oct 19 '22 at 08:52

score 0 · Answer 1 · answered Oct 19 '22 at 09:36

0

To fix this issue, we can do
1- Ask the vendor to fix this issue internally
2- Disable all of these errors by removing the -Werror flag
3- or by adding -Wno-deprecated-copy or Wno-error=depricated-copy if want to keep -Werror flag.

answered Oct 19 '22 at 09:36

Ehsan Sharifi Esfahani

45
8

A lot of "implicitly-declared '[...]::operator=([...])' is deprecated" error in the Opensplice when compiling with gcc11

1 Answers1