https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97694
martin <mscfd at gmx dot net> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=91926 --- Comment #1 from martin <mscfd at gmx dot net> --- There are two resolved bug reports which are very similar, bug 61881 and bug 91926. At least bug 91926 is working fine. The other is pretty old and lacks the optional attribute.