On Fri, Jan 14, 2022 at 10:53 PM Paul Eggert <egg...@cs.ucla.edu> wrote: > ... > Thanks for the bug report. Although nvc 22.1 defines __GNUC__ to be 11 > which means it supports GNU C as of GCC 11, that's obviously untrue for > __builtin_add_overflow. That's unfortunate. Perhaps you could report > this as a bug to NVIDIA, as their compiler shouldn't claim to support > GNU C features that it lacks. nvc can set __GNUC__ to be the version of > GNU C that it actually does support.
The GCC folks don't approve of other compilers setting __GNUC__. It's a GCC define, and other compilers should not be defining it. The GCC folks recommend filing a bug with the other compiler for defining __GNUC__. [1] [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61146#c2 Jeff
