https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68237 --- Comment #2 from Martin Reinecke <martin@mpa-garching.mpg.de> --- I'm using gcc version 6.0.0 20151106 (experimental) [trunk revision 2aebc1a:abfaa95:74905ec39301718edde3609ddd97ef8e0f9eb934] (GCC)