Hi Robert,
>Actually it was me, who posted the code. I've just seen your e-mail >after the issue was re-assigned back to ucl. oops, sorry! >I can still reproduce the issue on i386, but I guess you use amd64. In true, indeed >such a case you need to replace `4' with `8' (the value `4' was expanded>from >sizeof(long) by the macro included at the bottom of my previous >e-mail): oops, sure >(experimental_amd64-dchroot)robert@barriere:~$ gcc-5 ./test.c >/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crt1.o: In >function `_start': >(.text+0x20): undefined reference to `main' you need a -c there :) > >I've found quite similar gcc bug >https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55009 > >The reasoning given there suggests that you are right, and this is not >gcc bug, as the expression 1l << 63 on amd64 or 1l << 31 on i386 >involves undefined behaviour. > >I'll try to fix the issue at ucl side by switching to _Static_assert. not sure, feel free to investigate more :) thanks for the heads up! cheers, Gianfranco
