https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103114
--- Comment #7 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:0318df0ae63e47f6b2f30e96205d00dcb3696538 commit r12-5054-g0318df0ae63e47f6b2f30e96205d00dcb3696538 Author: Jakub Jelinek <ja...@redhat.com> Date: Tue Nov 9 15:29:36 2021 +0100 c++: Fix ICE on complex constant with -frounding-math [PR103114] The FE uses build_complex which assumes that fold_convert will fold value to a constant. With -frounding-math that isn't guaranteed though. So, the patch instead fold_build2s COMPLEX_EXPR, which will result in build_complex if both arguments are constants, and otherwise will build COMPLEX_EXPR. build_zero_cst is an optimization for fold_convert (type, integer_zero_node). 2021-11-09 Jakub Jelinek <ja...@redhat.com> PR c++/103114 * parser.c (cp_parser_userdef_numeric_literal): Use fold_build2 with COMPLEX_EXPR arg instead of build_complex, use build_zero_cst instead of fold_convert from integer_zero_node. * g++.dg/ext/complex10.C: New test.
