Thank you for such a quick response. I will file a ticket on Bugzilla. I have another question regarding your suggestion: > As a workaround you can compile the > C++17 code with -fno-gnu-unique so that GCC uses a weak symbol, but > that isn't a good solution in general (the unique binding exists for > good reasons). Is there a workaround you can think of that can be done on the library side? I am the maintainer of the library and can't control users' compile options. Thank you very much.