Re: [libvirt] [RFC] libvirt-admin: Mark symbols as local

On Tue, Aug 11, 2015 at 09:24:59PM +0200, Guido Günther wrote: > Otherwise we're leaking some 30+ symbols like > > virAdmConnectClass > virAdmConnectNew > virConnectClass > virConnectCloseCallbackDataClass > virDomainClass > ... > > I marked the one symbol needed by the deamon as > LIBVIRT_ADMIN_PRIVATE_<VERSION> for now. How are you identifying those as leaked ?

IIRC, exports are those symbols marked with 'T' in the nm output: [man nm] · The symbol type. At least the following types are used; others are, as well, depending on the object file format. If lowercase, the symbol is usually local; if uppercase, the symbol is global (external). There are however a few lowercase symbols that are shown for special global symbols ("u", "v" and "w"). "T" "t" The symbol is in the text (code) section. [/man] # nm -a .libs/libvirt-admin.so | grep ' T ' 0000000000001c80 T virAdmConnectClose 00000000000017d0 T virAdmConnectOpen 0000000000001d30 T virAdmConnectRef # nm -a .libs/libvirt-admin.so | grep virAdmConnectNew 00000000000037c0 t virAdmConnectNew So, IIUC, that lowercase 't' means the symol is local, and exported.