https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114303
--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>: https://gcc.gnu.org/g:b262b17636e47ae969a74f16e86ccb00678d5e88 commit r14-9916-gb262b17636e47ae969a74f16e86ccb00678d5e88 Author: Patrick Palka <ppa...@redhat.com> Date: Thu Apr 11 10:16:41 2024 -0400 c++: build_extra_args recapturing local specs [PR114303] r13-6452-g341e6cd8d603a3 made build_extra_args walk evaluated contexts first so that we prefer processing a local specialization in an evaluated context even if its first use is in an unevaluated context. But this means we need to avoid walking a tree that already has extra args/specs saved because the list of saved specs appears to be an evaluated context which we'll now walk first. It seems then that we should be calculating the saved specs from scratch each time, rather than potentially walking the saved specs list from an earlier partial instantiation when calling build_extra_args a second time around. PR c++/114303 gcc/cp/ChangeLog: * constraint.cc (tsubst_requires_expr): Clear REQUIRES_EXPR_EXTRA_ARGS before calling build_extra_args. * pt.cc (tree_extra_args): Define. (extract_locals_r): Assert *_EXTRA_ARGS is empty. (tsubst_stmt) <case IF_STMT>: Clear IF_SCOPE on the new IF_STMT. Call build_extra_args on the new IF_STMT instead of t which might already have IF_STMT_EXTRA_ARGS. gcc/testsuite/ChangeLog: * g++.dg/cpp1z/constexpr-if-lambda6.C: New test. Reviewed-by: Jason Merrill <ja...@redhat.com>
