Ok this is embarrassing... I discovered now that the compiling flags for all warnings were not active. Thank you for the help anyway. Carlos On 15 May 2015 at 11:55, Marc Glisse <marc.glisse@xxxxxxxx> wrote: > On Fri, 15 May 2015, Carlos Ferreira wrote: > >> Hello to all! >> >> I would like to make a quick question. >> >> G++ seems to allow this: >> >> int& x = x; >> >> which creates a null int reference. Why does G++ allows this? Is it a >> standard thing? This doesn't even generates a warning, and such code can >> easily cause a segfault. > > > I am actually getting 2 warnings with g++-5 -Wall: > > x.c:2:7: warning: reference 'i' is initialized with itself [-Winit-self] > int&i=i; > ^ > x.c:2:9: warning: 'i' is used uninitialized in this function > [-Wuninitialized] > int&i=i; > ^ > > -- > Marc Glisse -- Carlos Miguel Ferreira Researcher at Telecommunications Institute Aveiro - Portugal Work E-mail - cmf@xxxxxxxx Skype & GTalk -> carlosmf.pt@xxxxxxxxx LinkedIn -> http://www.linkedin.com/in/carlosmferreira
