https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82644
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Thu May 3 22:58:43 2018 New Revision: 259912 URL: https://gcc.gnu.org/viewcvs?rev=259912&root=gcc&view=rev Log: PR libstdc++/82644 define TR1 hypergeometric functions in strict modes Following a recent change for PR 82644 the non-standard hypergeomtric functions are not defined by <cmath> when __STRICT_ANSI__ is defined (e.g. for -std=c++17, or -std=c++14 -D__STDCPP_WANT_MATH_SPEC_FUNCS__). That caused errors in <tr1/cmath> because the using-declarations for tr1::hyperg et al are invalid in strict modes. The solution is to define the TR1 hypergeometric functions inline in <tr1/cmath> if __STRICT_ANSI__ is defined. PR libstdc++/82644 * include/tr1/cmath [__STRICT_ANSI__] (hypergf, hypergl, hyperg): Use inline definitions instead of using-declarations. [__STRICT_ANSI__] (conf_hypergf, conf_hypergl, conf_hyperg): Likewise. * testsuite/tr1/5_numerical_facilities/special_functions/ 07_conf_hyperg/compile_cxx17.cc: New. * testsuite/tr1/5_numerical_facilities/special_functions/ 17_hyperg/compile_cxx17.cc: New. Added: trunk/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/07_conf_hyperg/compile_cxx17.cc trunk/libstdc++-v3/testsuite/tr1/5_numerical_facilities/special_functions/17_hyperg/compile_cxx17.cc Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/tr1/cmath
