varasm.c (assemble_alias): Add error message for unsupported ifunc.

	* varasm.c (assemble_alias): Add error message for
	unsupported ifunc.

From-SVN: r164728

gcc/ChangeLog

+2010-09-29  Jack Howarth <howarth@bromo.med.uc.edu>
+
+	* varasm.c (assemble_alias): Add error message for
+	unsupported ifunc.
+
 2010-09-29  Mike Stump  <mikestump@comcast.net>
 
 	* config/darwin.h (flag_mkernel): Remove.

gcc/varasm.c

@@ -5542,6 +5542,10 @@ assemble_alias (tree decl, tree target)
 # else
       if (!DECL_WEAK (decl))
 	{
+	  if (lookup_attribute ("ifunc", DECL_ATTRIBUTES (decl)))
+	    error_at (DECL_SOURCE_LOCATION (decl),
+		      "ifunc is not supported in this configuration");
+	  else	
 	    error_at (DECL_SOURCE_LOCATION (decl),
 		      "only weak aliases are supported in this configuration");
 	  return;