https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50871
--- Comment #15 from Jason Merrill <jason at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #14) > It's better than what we have today, but I'm not sure it's where we want to > get to in the long term. > > I've been trying a patch that allows the system_header pragma to be > disabled when building and testing. How about using #pragma GCC diagnostic warning "-Wsystem-headers" instead? > This causes testsuite failures due to > warnings that can't be controlled by options or diagnostic pragmas: > > /home/jwakely/build/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/cmath: > 47: error: #include_next is a GCC extension Maybe leave off -Wpedantic for now. > /home/jwakely/build/powerpc64le-unknown-linux-gnu/libstdc++-v3/include/ > complex:1951: warning: floating point suffix 'if' shadowed by implementation This seems like a real issue. Perhaps for C++14 and up we should disable the built-in complex suffixes.
