Upstream in https://github.com/libunwind/libunwind/issues/672 for 1.8.
Also gentoo for libunwind 1.8: sys-libs/libunwind: Gos-linux.c:302:22: error: passing argument 1 of ‘_Ux86_sigreturn’ from incompatible pointer type [-Wincompatible- pointer-types] https://bugs.gentoo.org/918969 Cheers, Alban
