https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72868
--- Comment #4 from Alex Marquez <amarquez at sigovs dot com> --- (In reply to Daniel Krügler from comment #3) > The quoted essentials also require you to provide the full command line (A > range in a switch case is not Standard C++), please read about what's needed > in the quoted document. Cmdline: g++ -std=gnu++1y test.cpp Output: test.cpp:12:1: error: static assertion failed: Oops! static_assert(is_single_decimal_digit(3), "Oops!"); System GCC: COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/5/lto-wrapper Target: x86_64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 5.2.1-22ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-5 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu Thread model: posix gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) Alternate GCC (also fails): COLLECT_GCC=avr-g++ COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/avr/6.1.1/lto-wrapper Target: avr Configured with: ../gcc-6-20160714/configure --prefix=/usr/local/ --target=avr --enable-languages=c,c++ --disable-nls --disable-libssp --with-avrlibc --enable-target-optspace --disable-threads --program-prefix=avr- --enable-lto --with-multilib-list=avr5 --disable-tls --disable-libstdcxx Thread model: single gcc version 6.1.1 20160714 (GCC)