* Gavin Shan: >> __builtin_thread_pointer doesn't work on all architectures/GCC >> versions. >> Is this a problem for selftests? >> > > It's a problem as the test case is running on all architectures. I think I > need introduce our own __builtin_thread_pointer() for where it's not > supported: (1) PowerPC (2) x86 without GCC 11 > > Please let me know if I still have missed cases where > __buitin_thread_pointer() isn't supported? As far as I know, these are the two outliers that also have rseq support. The list is a bit longer if we also consider non-rseq architectures (csky, hppa, ia64, m68k, microblaze, sparc, don't know about the Linux architectures without glibc support). Thanks, Florian
