stage1: deal with BPF not supporting @returnAddress()

Make `@returnAddress()` return for the BPF target, as the BPF target for
the time being does not support probing for the return address. Stack
traces for the general purpose allocator for the BPF target is also set
to not be captured.
5c7f2ab011Kenta Iwasaki committed on 12/20/2021, 7:22:05 AM· committed by Andrew Kelleyparent16b7535
4 files changedLine totals unavailable