libgo: update to Go 1.8 release candidate 1

    
    Compiler changes:
      * Change map assignment to use mapassign and assign value directly.
      * Change string iteration to use decoderune, faster for ASCII strings.
      * Change makeslice to take int, and use makeslice64 for larger values.
      * Add new noverflow field to hmap struct used for maps.
    
    Unresolved problems, to be fixed later:
      * Commented out test in go/types/sizes_test.go that doesn't compile.
      * Commented out reflect.TestStructOf test for padding after zero-sized field.
    
    Reviewed-on: https://go-review.googlesource.com/35231

gotools/:
	Updates for Go 1.8rc1.
	* Makefile.am (go_cmd_go_files): Add bug.go.
	(s-zdefaultcc): Write defaultPkgConfig.
	* Makefile.in: Rebuild.

From-SVN: r244456

1 files changed, 3 insertions, 7 deletions

diff --git a/libgo/go/net/ipsock_posix.go b/libgo/go/net/ipsock_posix.go
index abe90ac0e61..ff280c3e4e8 100644
--- a/libgo/go/net/ipsock_posix.go
+++ b/libgo/go/net/ipsock_posix.go
@@ -12,13 +12,6 @@ import (
 	"syscall"
 )
 
-// BUG(rsc,mikio): On DragonFly BSD and OpenBSD, listening on the
-// "tcp" and "udp" networks does not listen for both IPv4 and IPv6
-// connections. This is due to the fact that IPv4 traffic will not be
-// routed to an IPv6 socket - two separate sockets are required if
-// both address families are to be supported.
-// See inet6(4) for details.
-
 func probeIPv4Stack() bool {
 	s, err := socketFunc(syscall.AF_INET, syscall.SOCK_STREAM, syscall.IPPROTO_TCP)
 	switch err {
@@ -154,6 +147,9 @@ func favoriteAddrFamily(net string, laddr, raddr sockaddr, mode string) (family
 
 // Internet sockets (TCP, UDP, IP)
 func internetSocket(ctx context.Context, net string, laddr, raddr sockaddr, sotype, proto int, mode string) (fd *netFD, err error) {
+	if (runtime.GOOS == "windows" || runtime.GOOS == "openbsd" || runtime.GOOS == "nacl") && mode == "dial" && raddr.isWildcard() {
+		raddr = raddr.toLocal(net)
+	}
 	family, ipv6only := favoriteAddrFamily(net, laddr, raddr, mode)
 	return socket(ctx, net, family, sotype, proto, ipv6only, laddr, raddr)
 }