https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99242
--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Nathaniel Shead <nsh...@gcc.gnu.org>: https://gcc.gnu.org/g:1aa0f1627857c3e2d90982bdb07ca78ca10b26f3 commit r15-2079-g1aa0f1627857c3e2d90982bdb07ca78ca10b26f3 Author: Nathaniel Shead <nathanielosh...@gmail.com> Date: Mon Jul 8 22:25:17 2024 +1000 c++/modules: Propagate BINDING_VECTOR_*_DUPS_P on realloc [PR99242] When importing modules, when a binding vector for a name runs out of slots it gets reallocated with a larger size, and existing bindings are copied across. However, the flags to indicate whether deduping needs to occur did not: this causes ICEs, as it allows a duplicate binding to be added which then violates assumptions later on. PR c++/99242 gcc/cp/ChangeLog: * name-lookup.cc (append_imported_binding_slot): Propagate dups flags. gcc/testsuite/ChangeLog: * g++.dg/modules/pr99242_a.H: New test. * g++.dg/modules/pr99242_b.H: New test. * g++.dg/modules/pr99242_c.H: New test. * g++.dg/modules/pr99242_d.C: New test. Signed-off-by: Nathaniel Shead <nathanielosh...@gmail.com>
