https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87675
--- Comment #5 from Nick Clifton <nickc at gcc dot gnu.org> --- Author: nickc Date: Fri Dec 7 10:33:30 2018 New Revision: 266886 URL: https://gcc.gnu.org/viewcvs?rev=266886&root=gcc&view=rev Log: Add a recursion limit to libiberty's demangling code. The limit is enabled by default, but can be disabled via a new demangling option. include * demangle.h (DMGL_NO_RECURSE_LIMIT): Define. (DEMANGLE_RECURSION_LIMIT): Define PR 87681 PR 87675 PR 87636 PR 87350 PR 87335 libiberty * cp-demangle.h (struct d_info): Add recursion_level field. * cp-demangle.c (d_function_type): Add recursion counter. If the recursion limit is reached and the check is not disabled, then return with a failure result. (cplus_demangle_init_info): Initialise the recursion_level field. (d_demangle_callback): If the recursion limit is enabled, check for a mangled string that is so long that there is not enough stack space for the local arrays. * cplus-dem.c (struct work): Add recursion_level field. (squangle_mop_up): Set the numb and numk fields to zero. (work_stuff_copy_to_from): Handle the case where a btypevec or ktypevec field is NULL. (demangle_nested_args): Add recursion counter. If the recursion limit is not disabled and reached, return with a failure result. Modified: trunk/include/ChangeLog trunk/include/demangle.h trunk/libiberty/ChangeLog trunk/libiberty/cp-demangle.c trunk/libiberty/cp-demangle.h trunk/libiberty/cplus-dem.c
