[llgo] Roll gofrontend forward

Switch gofrontend to using go.googlesource.com, and
update to 81eb6a3f425b2158c67ee32c0cc973a72ce9d6be.

There are various changes required to update to the
go 1.5 runtime:

typemap.go is changed to accommodate the change in representation for equal/hash algorithms, and the removal of the zero value/type.
CMakeLists.txt is updated to add the build tree to the package search path, so internal packages, which are not installed, are found.
various files changes due to removal of __go_new_nopointers; the same change as in D11863, but with NoUnwindAttribute added to the added runtime functions which are called with "callOnly".
minor cleanups in ssa.go while investigating issues with unwinding/panic handling.

Differential Revisision: http://reviews.llvm.org/D15188

llvm-svn: 263536

1 files changed, 169 insertions, 0 deletions

diff --git a/llgo/third_party/gofrontend/libgo/go/net/nss_test.go b/llgo/third_party/gofrontend/libgo/go/net/nss_test.go
new file mode 100644
index 00000000000..371deb502d1
--- /dev/null
+++ b/llgo/third_party/gofrontend/libgo/go/net/nss_test.go
@@ -0,0 +1,169 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package net
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+)
+
+const ubuntuTrustyAvahi = `# /etc/nsswitch.conf
+#
+# Example configuration of GNU Name Service Switch functionality.
+# If you have the libc-doc-reference' and nfo' packages installed, try:
+# nfo libc "Name Service Switch"' for information about this file.
+
+passwd:         compat
+group:          compat
+shadow:         compat
+
+hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4
+networks:       files
+
+protocols:      db files
+services:       db files
+ethers:         db files
+rpc:            db files
+
+netgroup:       nis
+`
+
+func TestParseNSSConf(t *testing.T) {
+	tests := []struct {
+		name string
+		in   string
+		want *nssConf
+	}{
+		{
+			name: "no_newline",
+			in:   "foo: a b",
+			want: &nssConf{
+				sources: map[string][]nssSource{
+					"foo": {{source: "a"}, {source: "b"}},
+				},
+			},
+		},
+		{
+			name: "newline",
+			in:   "foo: a b\n",
+			want: &nssConf{
+				sources: map[string][]nssSource{
+					"foo": {{source: "a"}, {source: "b"}},
+				},
+			},
+		},
+		{
+			name: "whitespace",
+			in:   "   foo:a    b    \n",
+			want: &nssConf{
+				sources: map[string][]nssSource{
+					"foo": {{source: "a"}, {source: "b"}},
+				},
+			},
+		},
+		{
+			name: "comment1",
+			in:   "   foo:a    b#c\n",
+			want: &nssConf{
+				sources: map[string][]nssSource{
+					"foo": {{source: "a"}, {source: "b"}},
+				},
+			},
+		},
+		{
+			name: "comment2",
+			in:   "   foo:a    b #c \n",
+			want: &nssConf{
+				sources: map[string][]nssSource{
+					"foo": {{source: "a"}, {source: "b"}},
+				},
+			},
+		},
+		{
+			name: "crit",
+			in:   "   foo:a    b [!a=b    X=Y ] c#d \n",
+			want: &nssConf{
+				sources: map[string][]nssSource{
+					"foo": {
+						{source: "a"},
+						{
+							source: "b",
+							criteria: []nssCriterion{
+								{
+									negate: true,
+									status: "a",
+									action: "b",
+								},
+								{
+									status: "x",
+									action: "y",
+								},
+							},
+						},
+						{source: "c"},
+					},
+				},
+			},
+		},
+
+		// Ubuntu Trusty w/ avahi-daemon, libavahi-* etc installed.
+		{
+			name: "ubuntu_trusty_avahi",
+			in:   ubuntuTrustyAvahi,
+			want: &nssConf{
+				sources: map[string][]nssSource{
+					"passwd": {{source: "compat"}},
+					"group":  {{source: "compat"}},
+					"shadow": {{source: "compat"}},
+					"hosts": {
+						{source: "files"},
+						{
+							source: "mdns4_minimal",
+							criteria: []nssCriterion{
+								{
+									negate: false,
+									status: "notfound",
+									action: "return",
+								},
+							},
+						},
+						{source: "dns"},
+						{source: "mdns4"},
+					},
+					"networks": {{source: "files"}},
+					"protocols": {
+						{source: "db"},
+						{source: "files"},
+					},
+					"services": {
+						{source: "db"},
+						{source: "files"},
+					},
+					"ethers": {
+						{source: "db"},
+						{source: "files"},
+					},
+					"rpc": {
+						{source: "db"},
+						{source: "files"},
+					},
+					"netgroup": {
+						{source: "nis"},
+					},
+				},
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		gotConf := parseNSSConf(strings.NewReader(tt.in))
+		if !reflect.DeepEqual(gotConf, tt.want) {
+			t.Errorf("%s: mismatch\n got %#v\nwant %#v", tt.name, gotConf, tt.want)
+		}
+	}
+}