On Mon, Jan 24, 2022 at 06:11:22PM +0100, Florian Weimer via Gcc-patches wrote:
> _dl_find_object returns success even if no unwind information has been
> found, and dlfo_eh_frame is NULL.
>
> libgcc/ChangeLog:
>
> PR libgcc/104207
> * unwind-dw2-fde-dip.c (_Unwind_Find_FDE): Add NULL check.
>
> ---
> libgcc/unwind-dw2-fde-dip.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Ok, thanks.
> diff --git a/libgcc/unwind-dw2-fde-dip.c b/libgcc/unwind-dw2-fde-dip.c
> index 7de847cb120..3d6f39f5460 100644
> --- a/libgcc/unwind-dw2-fde-dip.c
> +++ b/libgcc/unwind-dw2-fde-dip.c
> @@ -509,7 +509,7 @@ _Unwind_Find_FDE (void *pc, struct dwarf_eh_bases *bases)
> #ifdef DLFO_STRUCT_HAS_EH_DBASE
> {
> struct dl_find_object dlfo;
> - if (_dl_find_object (pc, &dlfo) == 0)
> + if (_dl_find_object (pc, &dlfo) == 0 && dlfo.dlfo_eh_frame != NULL)
> return find_fde_tail ((_Unwind_Ptr) pc, dlfo.dlfo_eh_frame,
> # if DLFO_STRUCT_HAS_EH_DBASE
> (_Unwind_Ptr) dlfo.dlfo_eh_dbase,
Jakub
