https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71566
denis.campredon at gmail dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |denis.campredon at gmail dot com --- Comment #1 from denis.campredon at gmail dot com --- You have to change `[[aligned(16)]]' to `[[gnu::aligned(16)]]' as attribute aligned is a gnu extension to the standard.