Re: Help with strict-aliasing warning
On 04/12/2018 07:40 AM, John Reiser wrote: Kevin Kofler wrote: Orion Poplawski wrote: I'm getting: /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp: In function 'void lib::linkimage(EnvT*)': /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp:159:36: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] (BaseGDL* &) dynFun[count_fun] = ^ (BaseGDL*) dlsym(module[count], entryName.c_str()); dynFun is defined as: BaseGDL*(*dynFun[MAXNDLL/2])( EnvT* e); This is all beyond me. Missing the function pointer argument specification? Try: dynFun[count_fun] = (BaseGDL*(*)(EnvT*)) dlsym(module[count], entryName.c_str()); Yes. Introducing a typedef might aid understanding: typedef BaseGDL* (*dynFun_t)(EnvT* e); dynFun_t dynFun[MAXDLL/2]; // ... dynFun[count_fun] = (dynFun_t) dlsym(...); Thanks! -- Orion Poplawski Manager of NWRA Technical Systems 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane or...@nwra.com Boulder, CO 80301 https://www.nwra.com/ ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org
Re: Help with strict-aliasing warning
Kevin Kofler wrote: Orion Poplawski wrote: I'm getting: /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp: In function 'void lib::linkimage(EnvT*)': /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp:159:36: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] (BaseGDL* &) dynFun[count_fun] = ^ (BaseGDL*) dlsym(module[count], entryName.c_str()); dynFun is defined as: BaseGDL*(*dynFun[MAXNDLL/2])( EnvT* e); This is all beyond me. Missing the function pointer argument specification? Try: dynFun[count_fun] = (BaseGDL*(*)(EnvT*)) dlsym(module[count], entryName.c_str()); Yes. Introducing a typedef might aid understanding: typedef BaseGDL* (*dynFun_t)(EnvT* e); dynFun_t dynFun[MAXDLL/2]; // ... dynFun[count_fun] = (dynFun_t) dlsym(...); ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org
Re: Help with strict-aliasing warning
Orion Poplawski wrote: > I'm getting: > > /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp: In function 'void > lib::linkimage(EnvT*)': > /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp:159:36: warning: > dereferencing type-punned pointer will break strict-aliasing rules > [-Wstrict-aliasing] > (BaseGDL* &) dynFun[count_fun] = > ^ >(BaseGDL*) dlsym(module[count], entryName.c_str()); > > > dynFun is defined as: > >BaseGDL*(*dynFun[MAXNDLL/2])( EnvT* e); > > This is all beyond me. Missing the function pointer argument > specification? Try: dynFun[count_fun] = (BaseGDL*(*)(EnvT*)) dlsym(module[count], entryName.c_str()); Kevin Kofler ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org
Help with strict-aliasing warning
I'm getting: /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp: In function 'void lib::linkimage(EnvT*)': /builddir/build/BUILD/gdl-0.9.8/src/basic_pro_jmg.cpp:159:36: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] (BaseGDL* &) dynFun[count_fun] = ^ (BaseGDL*) dlsym(module[count], entryName.c_str()); dynFun is defined as: BaseGDL*(*dynFun[MAXNDLL/2])( EnvT* e); This is all beyond me. Missing the function pointer argument specification? Thanks. -- Orion Poplawski Manager of NWRA Technical Systems 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane or...@nwra.com Boulder, CO 80301 https://www.nwra.com/ ___ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org
