https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106001
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:566e599c8194f789b077eb94a5e45ced2de5b31e commit r12-8495-g566e599c8194f789b077eb94a5e45ced2de5b31e Author: Jakub Jelinek <ja...@redhat.com> Date: Fri Jun 17 17:40:49 2022 +0200 c++: Use fold_non_dependent_expr rather than maybe_constant_value in __builtin_shufflevector handling [PR106001] In this case the STATIC_CAST_EXPR expressions in the call aren't type nor value dependent, but maybe_constant_value still ICEs on those when processing_template_decl. Calling fold_non_dependent_expr on it instead fixes the ICE and folds them to INTEGER_CSTs. 2022-06-17 Jakub Jelinek <ja...@redhat.com> PR c++/106001 * typeck.cc (build_x_shufflevector): Use fold_non_dependent_expr instead of maybe_constant_value. * g++.dg/ext/builtin-shufflevector-4.C: New test. (cherry picked from commit a284fadcce8ef443cc3cc047a8017745efb51758)