[Bug go/67874] fd_unix.go does not build when there is fcntl64 and no fcntl syscall

[ian at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67874

--- Comment #2 from ian at gcc dot gnu.org <ian at gcc dot gnu.org> ---
Author: ian
Date: Wed Oct  7 17:22:08 2015
New Revision: 228576

URL: https://gcc.gnu.org/viewcvs?rev=228576&root=gcc&view=rev
Log:
        PR go/67874
    net, runtime: Call C library fcntl function rather than syscall.Syscall.

    Not all systems define a fcntl syscall; some only have fcntl64.

    Fixes GCC PR go/67874.

    Reviewed-on: https://go-review.googlesource.com/15497

Modified:
    trunk/gcc/go/gofrontend/MERGE
    trunk/libgo/go/net/fd_unix.go
    trunk/libgo/runtime/go-varargs.c