https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106304
--- Comment #3 from CVS 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:d6a488f243acfac4bdbbb0eefbee3ae916159cf5 commit r13-3299-gd6a488f243acfac4bdbbb0eefbee3ae916159cf5 Author: Patrick Palka <ppa...@redhat.com> Date: Fri Oct 14 09:07:01 2022 -0400 c++ modules: ICE with dynamic_cast [PR106304] The FUNCTION_DECL we build for __dynamic_cast has an empty DECL_CONTEXT but trees_out::tree_node expects FUNCTION_DECLs to have non-empty DECL_CONTEXT, thus we crash when streaming out the dynamic_cast in the below testcase. This patch naively fixes this by setting DECL_CONTEXT for __dynamic_cast appropriately. I suppose we should push it into the namespace too, like we do for __cxa_atexit which is similarly lazily declared. PR c++/106304 gcc/cp/ChangeLog: * constexpr.cc (cxx_dynamic_cast_fn_p): Check for abi_node instead of global_namespace. * rtti.cc (build_dynamic_cast_1): Set DECL_CONTEXT and DECL_SOURCE_LOCATION when building dynamic_cast_node. Push it into the namespace. gcc/testsuite/ChangeLog: * g++.dg/modules/pr106304_a.C: New test. * g++.dg/modules/pr106304_b.C: New test.
