On Sat, 24 Apr 2021, Alejandro Colomar via Libc-alpha wrote: > Some pages also document attributes, using GNU syntax > '__attribute__((xxx))'. Update those to use the shorter and more > portable C2x syntax, which hasn't been standardized yet, but is > already implemented in GCC, and available through either --std=c2x > or any of the --std=gnu... options. If you mention alignment in the manpage at all, the same reasoning would say you should use _Alignas(8) not [[gnu::aligned(8)]], in any context where _Alignas is valid. -- Joseph S. Myers joseph@xxxxxxxxxxxxxxxx