Re: Can I use extern "C" in an extension so I can use C++?

Isaac Morland <isaac(dot)morland(at)gmail(dot)com> writes:
> I'm writing a small extension, and I'm trying to use C++ constructs. I'm
> not actually doing anything that needs C++, but I *really* like declaring
> variables when I first initialize them (for example), and I also *really*
> like warning-free compiles.

Well, you could get that with -Wno-declaration-after-statement ...
but yeah, this is supposed to work, modulo all the caveats on the
page you already found.

> The C++ compiler is mangling the names so they aren't visible to the
> extension mechanism.

Something like the attached works for me; what problem are you having
*exactly*?

$ g++ -Wall -fno-strict-aliasing -fwrapv -g -O2 -D_GNU_SOURCE -c -I/home/postgres/pgsql/src/include -o test.o test.cpp
$ nm --ext --def test.o
0000000000000000 T Pg_magic_func
0000000000000010 T pg_finfo_silly_func
0000000000000020 T silly_func

regards, tom lane