https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68356
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- It looks like a math library issue. The test has workarounds for glibc: /* Disabled due to glibc PR 6792, fixed in Apr 2015. */ if (0) TEST (log1p (d), LARGE_NEG_EDOM);