https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91370
--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Thu Nov 7 20:24:38 2019 New Revision: 277929 URL: https://gcc.gnu.org/viewcvs?rev=277929&root=gcc&view=rev Log: PR c++/91370 - Implement P1041R4 and P1139R2 - Stronger Unicode reqs * charset.c (narrow_str_to_charconst): Add TYPE argument. For CPP_UTF8CHAR diagnose whenever number of chars is > 1, using CPP_DL_ERROR instead of CPP_DL_WARNING. (wide_str_to_charconst): For CPP_CHAR16 or CPP_CHAR32, use CPP_DL_ERROR instead of CPP_DL_WARNING when multiple char16_t or char32_t chars are needed. (cpp_interpret_charconst): Adjust narrow_str_to_charconst caller. * g++.dg/cpp1z/utf8-neg.C: Expect errors rather than -Wmultichar warnings. * g++.dg/ext/utf16-4.C: Expect errors rather than warnings. * g++.dg/ext/utf32-4.C: Likewise. * g++.dg/cpp2a/ucn2.C: New test. Added: trunk/gcc/testsuite/g++.dg/cpp2a/ucn2.C Modified: trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/g++.dg/cpp1z/utf8-neg.C trunk/gcc/testsuite/g++.dg/ext/utf16-4.C trunk/gcc/testsuite/g++.dg/ext/utf32-4.C trunk/libcpp/ChangeLog trunk/libcpp/charset.c
