https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66645
--- Comment #5 from Benoit Gschwind <gschw...@gnu-log.net> --- (In reply to Markus Trippelsdorf from comment #4) > gcc-4.8.4 is no longer supported. Please use a more recent compiler. > 4.9, 5.1 and 6.0 compile the testcase without any issues. thank you, I tryed gcc 4.9 and it's work, my apology for the noise.