>>> Test phase: dev-libs/libtommath-0.42.0-r1 make -j3 -j1 test cc -O2 -g -pipe -mcpu=G5 -mtune=G5 -maltivec -Wall -I./ -Wall -W -Wshadow -Wsign-compare -O3 -funroll-loops -fomit-frame-pointer -c -o bncore.o bncore.c And so on.
Fixed in =dev-libs/libtommath-1.0-r1 ebuild: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=75a62f8133f164629233684db882f16eec2fe1ef While at it added actual test run.