Don't crash import unsafe if "unsafe" was already defined.

From-SVN: r170389

Don't crash import unsafe if "unsafe" was already defined.
From-SVN: r170389
5b32f0e6 · Ian Lance Taylor · 6042d1dd · 5b32f0e6
Commit 5b32f0e6 authored Feb 22, 2011 by Ian Lance Taylor
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gcc/go/gofrontend/unsafe.cc
+7 -0

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--- a/gcc/go/gofrontend/unsafe.cc
+++ b/gcc/go/gofrontend/unsafe.cc
@@ -24,6 +24,13 @@ Gogo::import_unsafe(const std::string& local_name, bool is_local_name_exported,
 						is_local_name_exported,
 						"libgo_unsafe",
 						location, &add_to_globals);
+
+  if (package == NULL)
+    {
+      gcc_assert(saw_errors());
+      return;
+    }
+
  package->set_is_imported();

  Bindings* bindings = package->bindings();