godefs does not regenerate Msghdr in ztypes_darwin_{386,amd64}.go correctly #1466
Description
What steps will reproduce the problem?
On a darwin system regenerating ztypes_darwin_{386,amd64}.go will not correctly
What is the expected output?
[dave@indy ~/go/src/pkg/syscall]$ uname
FreeBSD
[dave@indy ~/go/src/pkg/syscall]$ godefs -gsyscall -f-m32 types_freebsd.c 2>/dev/null
| grep -A 8 Msghdr\ struct
type Msghdr struct {
Name *byte;
Namelen uint32;
Iov *Iovec;
Iovlen int32;
Control *byte;
Controllen uint32;
Flags int32;
}
odessa(~/go/src/pkg/syscall) % uname
Linux
odessa(~/go/src/pkg/syscall) % godefs -gsyscall -f-m32 types_linux.c 2>/dev/null |
grep -A 8 Msghdr\ struct
type Msghdr struct {
Name *byte;
Namelen uint32;
Iov *Iovec;
Iovlen uint32;
Control *byte;
Controllen uint32;
Flags int32;
}
What do you see instead?
lucky(~/go/src/pkg/syscall) % uname
Darwin
lucky(~/go/src/pkg/syscall) % godefs -gsyscall -f-m32 types_darwin.c 2>/dev/null |
grep -A 8 Msghdr\ struct
type Msghdr struct {
Name *byte;
Namelen uint32;
Iov uint32;
Iovlen int32;
Control *byte;
Controllen uint32;
Flags int32;
}
Iov is no longer defined as *Iovec, but uint32 (or uint64 under -m64)
Which compiler are you using (5g, 6g, 8g, gccgo)?
godefs
Which operating system are you using?
Works on linux and freebsd, does not work on darwin
Which revision are you using? (hg identify)
c88661a2d028+ tip
Please provide any additional information below.
Linux is the only GOOS that uses syscall.Msghdr, darwin and freebsd do not have support
for syscall.Recvmsg, so this is not a big problem at the moment, but it's a timebomb for
the day when someone adds those syscalls.