https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107649
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:0e2c5510e001e5ccbde9e4b7df757e2bba2fdb00 commit r13-4096-g0e2c5510e001e5ccbde9e4b7df757e2bba2fdb00 Author: Jakub Jelinek <ja...@redhat.com> Date: Wed Nov 16 14:45:40 2022 +0100 libstdc++: Fix up <complex> for extended floating point types [PR107649] As filed by Jonathan in the PR, I've screwed up the requires syntax in the extended floating point specialization: - requires(__complex_type<_Tp>::type) + requires requires { typename __complex_type<_Tp>::type; } and doing this change resulted in lots of errors because __complex_whatever overfloads from extended floating point types were declared after the templates which used them. The following patch fixes that. Bootstrapped/regtested on x86_64-linux and i686-linux, additionally I've tested that with _GLIBCXX_HAVE_FLOAT128_MATH not being defined while __STDCPP_FLOAT128_T__ defined one can still use std::complex<std::float128_t> for basic arithmetic etc., just one can't expect std::sin etc. to work in that case (because we don't have any implementation). 2022-11-16 Jakub Jelinek <ja...@redhat.com> Jonathan Wakely <jwak...@redhat.com> PR libstdc++/107649 * include/std/complex (__complex_abs, __complex_arg, __complex_cos, __complex_cosh, __complex_exp, __complex_log, __complex_sin, __complex_sinh, __complex_sqrt, __complex_tan, __complex_tanh, __complex_pow): Move __complex__ _Float{16,32,64,128} and __complex__ decltype(0.0bf16) overloads earlier in the file. (complex): Fix up requires on the partial specialization for extended float types. (__complex_acos, __complex_asin, __complex_atan, __complex_acosh, __complex_asinh, __complex_atanh): Move __complex__ _Float{16,32,64,128} and __complex__ decltype(0.0bf16) overloads earlier in the file.