* Andreas Schwab: > On Dez 29 2019, Samuel Thibault wrote: > >> diff --git a/sysdeps/mach/hurd/sendmsg.c b/sysdeps/mach/hurd/sendmsg.c >> index 0c19b3223c..3d7317cec4 100644 >> --- a/sysdeps/mach/hurd/sendmsg.c >> +++ b/sysdeps/mach/hurd/sendmsg.c >> @@ -108,7 +108,7 @@ __libc_sendmsg (int fd, const struct msghdr >> *message, int flags) >> >> /* Allocate enough room for ports. */ >> cmsg = CMSG_FIRSTHDR (message); >> - for (; cmsg; cmsg = CMSG_NXTHDR (message, cmsg)) >> + for (; cmsg; cmsg = CMSG_NXTHDR ((struct msghdr *) message, cmsg)) > > Why is the first argument of __cmsg_nxthdr not const?
Some programmers expect that CMSG_NXTHDR can be used to construct ancillary data. See bug 13500.
