https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66681
--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > Looks to me, from your result, that it is present in 5.2 :-) ( 0.00000000 , 0.00000000 ) instead of ( 1.00000000 , 0.00000000 )?-(