https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94264
--- Comment #9 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:5764825aed613f201a8bc47e5b239027a39691f0 commit r14-6342-g5764825aed613f201a8bc47e5b239027a39691f0 Author: Patrick Palka <ppa...@redhat.com> Date: Fri Dec 8 13:33:55 2023 -0500 c++: undiagnosed error_mark_node from cp_build_c_cast [PR112658] When cp_build_c_cast commits to an erroneous const_cast, we neglect to replay errors from build_const_cast_1 which can lead to us incorrectly accepting (and "miscompiling") the cast, or triggering the assert in finish_expr_stmt. This patch fixes this oversight. This was the original fix for the ICE in PR112658 before r14-5941-g305a2686c99bf9 made us accept the testcase there after all. I wasn't able to come up with an alternate testcase for which this fix has an effect anymore, but below is a reduced version of the PR112658 testcase (accepted ever since r14-5941) for good measure. PR c++/112658 PR c++/94264 gcc/cp/ChangeLog: * typeck.cc (cp_build_c_cast): If we're committed to a const_cast and the result is erroneous, call build_const_cast_1 a second time to issue errors. Use complain=tf_none instead of =false. gcc/testsuite/ChangeLog: * g++.dg/cpp0x/initlist-array20.C: New test.
