re PR c++/30297 (ICE with extern "C" and inheritance)

gcc/cp
2007-11-08  Andrew Pinski  <pinskia@gmail.com>
	PR c++/30297:
	* tree.c (decl_linkage): Fields have no linkage.
gcc/testsuite
	PR c++/30297:
	* g++.dg/inherit/pr30297.C: New file.

From-SVN: r130018

gcc/cp/ChangeLog

+2007-11-08  Andrew Pinski  <pinskia@gmail.com>
+
+	PR c++/30297:
+	* tree.c (decl_linkage): Fields have no linkage.
+
 2007-11-08  Daniel Jacobowitz  <dan@codesourcery.com>
 
 	* class.c (build_ctor_vtbl_group): Lay out the new type and decl.

gcc/cp/tree.c

@@ -2493,6 +2493,10 @@ decl_linkage (tree decl)
   if (!DECL_NAME (decl))
     return lk_none;
 
+  /* Fields have no linkage.  */
+  if (TREE_CODE (decl) == FIELD_DECL)
+    return lk_none;
+
   /* Things that are TREE_PUBLIC have external linkage.  */
   if (TREE_PUBLIC (decl))
     return lk_external;

gcc/testsuite/ChangeLog

+2007-11-08  Tom Tromey  <tromey@redhat.com>
+
+	PR c++/30297:
+	* g++.dg/inherit/pr30297.C: New file.
+
 2007-11-08  Danny Smith  <dannysmith@users.sourceforge.net>
 
 	* gcc.dg/compat/struct-layout-1_generate.c (dg-options) Add

gcc/testsuite/g++.dg/inherit/pr30297.C

+// Regression test for ICE from PR c++/30297.
+
+struct A
+{
+  int i;
+};
+
+extern "C" struct B : A
+{
+  A::i;
+};