Go patch committed: Pass correct 'function' flag to circular_pointer_type

[Ian Lance Taylor]

The code in Named_type::do_get_backend in the Go frontend was not
passing the correct flag value for circular function types to
Backend::circular_pointer_type (it was always setting this flag to
false). This patch by Than McIntosh passes a true value if the type
being converted is a function type.  Bootstrapped and ran Go testsuite
on x86_64-pc-linux-gnu.  Committed to mainline.

Ian

Index: gcc/go/gofrontend/MERGE
===================================================================
--- gcc/go/gofrontend/MERGE     (revision 250324)
+++ gcc/go/gofrontend/MERGE     (working copy)
@@ -1,4 +1,4 @@
-21775ae119830810d9e415a02e85349f4190c68c
+0036bd04d077f8bbe5aa9a62fb8830c53068209e
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
Index: gcc/go/gofrontend/types.cc
===================================================================
--- gcc/go/gofrontend/types.cc  (revision 249799)
+++ gcc/go/gofrontend/types.cc  (working copy)
@@ -10994,13 +10994,13 @@ Named_type::do_get_backend(Gogo* gogo)
       if (this->seen_in_get_backend_)
        {
          this->is_circular_ = true;
-         return gogo->backend()->circular_pointer_type(bt, false);
+         return gogo->backend()->circular_pointer_type(bt, true);
        }
       this->seen_in_get_backend_ = true;
       bt1 = Type::get_named_base_btype(gogo, base);
       this->seen_in_get_backend_ = false;
       if (this->is_circular_)
-       bt1 = gogo->backend()->circular_pointer_type(bt, false);
+       bt1 = gogo->backend()->circular_pointer_type(bt, true);
       if (!gogo->backend()->set_placeholder_pointer_type(bt, bt1))
        bt = gogo->backend()->error_type();
       return bt;