https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52869
denin at mail dot ru changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |denin at mail dot ru --- Comment #6 from denin at mail dot ru --- Reproduced in 8.1.1: $ cat nyan.cpp struct Nyan { constexpr Nyan &operator++() noexcept { return *this; } constexpr void omg() noexcept(noexcept(++*this)) {} }; int main() {} $ g++ -Wall -Wextra nyan.cpp nyan.cpp:3:44: error: invalid use of ‘this’ at top level constexpr void omg() noexcept(noexcept(++*this)) {} ^~~~ $ clang++ nyan.cpp $ g++ -v Using built-in specs. COLLECT_GCC=g++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/8.1.1/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/ --enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable-threads=posix --enable-libmpx --with-system-zlib --with-isl --enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install-libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release --enable-default-pie --enable-default-ssp Thread model: posix gcc version 8.1.1 20180531 (GCC) $ uname -a Linux home 4.17.10-1-ARCH #1 SMP PREEMPT Wed Jul 25 11:23:00 UTC 2018 x86_64 GNU/Linux