https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87204
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> --- There are lots of glibc strtod fixes that postdate the last merges of strtod code to libquadmath. I don't know if any of them are relevant to this issue, but merging in those fixes would seem a good idea before investigating this issue further.
