Go patch committed: Ignore aliases in fieldtracking info

Go patch committed: Ignore aliases in fieldtracking info

[Ian Lance Taylor]

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This patch to the Go frontend ignores aliases when emitting
fieldtracking info.  We want to track references to fields in the real
struct, not in some alias to the struct.  Bootstrapped and ran Go
testsuite on x86_64-pc-linux-gnu.  Committed to mainline.

Ian

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Index: gcc/go/gofrontend/MERGE
===================================================================
--- gcc/go/gofrontend/MERGE	(revision 257914)
+++ gcc/go/gofrontend/MERGE	(working copy)
@@ -1,4 +1,4 @@
-ed8647cc99652db2d689215c05f31ad038438a7e
+8b3d6091801d485c74a9c92740c69673e39160b0
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
Index: gcc/go/gofrontend/expressions.cc
===================================================================
--- gcc/go/gofrontend/expressions.cc	(revision 257914)
+++ gcc/go/gofrontend/expressions.cc	(working copy)
@@ -11696,7 +11696,7 @@ Field_reference_expression::do_lower(Gog
   Location loc = this->location();
 
   std::string s = "fieldtrack \"";
-  Named_type* nt = this->expr_->type()->named_type();
+  Named_type* nt = this->expr_->type()->unalias()->named_type();
   if (nt == NULL || nt->named_object()->package() == NULL)
     s.append(gogo->pkgpath());
   else