On Thu, Nov 18, 2021 at 7:17 AM Florian Weimer via Libc-alpha <libc-alpha@xxxxxxxxxxxxxx> wrote: > 4. Add public symbols __rseq_abi_offset, __rseq_abi_size (currently 32 > or 0), __rseq_abi_flags (currently 0). __rseq_abi_offset is the > offset to add to the thread pointer (see __builtin_thread_pointer) to > get to the rseq area. They will be public ABI symbols. These > variables are initialized before user code runs, and changing the > results in undefined behavior. Why not then __get_rseq_whatwever functions and not variables ? or maybe writing to these variables results in a compiler or linker error instead of UB ?
