cmd/gc: repair make(T) in export data for inlining.

When T was an unexported type it could be forgotten.

Fixes #5470.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/9303050

src/cmd/gc/export.c

@@ -165,12 +165,15 @@ reexportdep(Node *n)
 	case ODOTTYPE2:
 	case OSTRUCTLIT:
 	case OPTRLIT:
+	case OMAKEMAP:
+	case OMAKESLICE:
+	case OMAKECHAN:
 		t = n->type;
 		if(!t->sym && t->type)
 			t = t->type;
 		if(t && t->sym && t->sym->def && !exportedsym(t->sym)) {
 			if(debug['E'])
-				print("reexport type for convnop %S\n", t->sym);
+				print("reexport type for expression %S\n", t->sym);
 			exportlist = list(exportlist, t->sym->def);
 		}
 		break;

test/fixedbugs/issue5470.dir/a.go

+// Copyright 2013 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.
+
+package a
+
+type Foo interface {
+	Hi() string
+}
+
+func Test1() Foo { return make(tst1) }
+
+type tst1 map[string]bool
+
+func (r tst1) Hi() string { return "Hi!" }
+
+func Test2() Foo { return make(tst2, 0) }
+
+type tst2 []string
+
+func (r tst2) Hi() string { return "Hi!" }
+
+func Test3() Foo { return make(tst3) }
+
+type tst3 chan string
+
+func (r tst3) Hi() string { return "Hi!" }

test/fixedbugs/issue5470.dir/b.go

+// Copyright 2013 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.
+
+package b
+
+import "./a"
+
+func main() {
+	a.Test1()
+	a.Test2()
+	a.Test3()
+}

test/fixedbugs/issue5470.go

+// compiledir
+
+// Copyright 2013 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.
+
+// Issue 5470: exported data for inlining may miss
+// the type argument of make.
+
+package ignored