https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105353
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>: https://gcc.gnu.org/g:1ba397e9f93d3abc93a6ecbabc3d873489a6fb7f commit r12-8248-g1ba397e9f93d3abc93a6ecbabc3d873489a6fb7f Author: Marek Polacek <pola...@redhat.com> Date: Fri Apr 22 19:40:27 2022 -0400 c++: __builtin_shufflevector with value-dep expr [PR105353] Here we issue an error from c_build_shufflevector while parsing a template because it got a TEMPLATE_PARM_INDEX, but this function expects INTEGER_CSTs (except the first two arguments). It checks if any of the arguments are type-dependent, if so, we leave the processing for later, but it should also check value-dependency for the 3rd+ arguments, so as to avoid the problem above. This is not a regression -- __builtin_shufflevector was introduced in GCC 12, but it looks safe enough. PR c++/105353 gcc/cp/ChangeLog: * typeck.cc (build_x_shufflevector): Use instantiation_dependent_expression_p except for the first two arguments. gcc/testsuite/ChangeLog: * g++.dg/ext/builtin-shufflevector-3.C: New test.
