diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 075b1a011bd..3f3a1bc3d7c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2013-09-17  Jan Hubicka  <jh@suse.cz>
+
+	PR middle-end/58329
+	* ipa-devirt.c (ipa_devirt): Be ready for symtab_nonoverwritable_alias
+	to return NULL.
+	* ipa.c (function_and_variable_visibility): Likewise.
+	* ipa-profile.c (ipa_profile): Likewise.
+
 2013-09-17  Bernd Edlinger  <bernd.edlinger@hotmail.de>
 
 	PR ipa/58398
diff --git a/gcc/ipa-devirt.c b/gcc/ipa-devirt.c
index 1be19f89d05..85bc5b0652b 100644
--- a/gcc/ipa-devirt.c
+++ b/gcc/ipa-devirt.c
@@ -1098,7 +1098,13 @@ ipa_devirt (void)
 			   cgraph_node_name (likely_target),
 			   likely_target->symbol.order);
 		if (!symtab_can_be_discarded ((symtab_node) likely_target))
-		  likely_target = cgraph (symtab_nonoverwritable_alias ((symtab_node)likely_target));
+		  {
+		    cgraph_node *alias;
+		    alias = cgraph (symtab_nonoverwritable_alias
+				     ((symtab_node)likely_target));
+		    if (alias)
+		      likely_target = alias;
+		  }
 		nconverted++;
 		update = true;
 		cgraph_turn_edge_to_speculative
diff --git a/gcc/ipa-profile.c b/gcc/ipa-profile.c
index 2b22333d1b9..424e4a6b6fe 100644
--- a/gcc/ipa-profile.c
+++ b/gcc/ipa-profile.c
@@ -625,7 +625,13 @@ ipa_profile (void)
 			 of N2.  Speculate on the local alias to allow inlining.
 		       */
 		      if (!symtab_can_be_discarded ((symtab_node) n2))
-			n2 = cgraph (symtab_nonoverwritable_alias ((symtab_node)n2));
+			{
+			  cgraph_node *alias;
+			  alias = cgraph (symtab_nonoverwritable_alias
+					   ((symtab_node)n2));
+			  if (alias)
+			    n2 = alias;
+			}
 		      nconverted++;
 		      cgraph_turn_edge_to_speculative
 			(e, n2,
diff --git a/gcc/ipa.c b/gcc/ipa.c
index 91d63eb9f85..67b3bc0f07c 100644
--- a/gcc/ipa.c
+++ b/gcc/ipa.c
@@ -998,7 +998,7 @@ function_and_variable_visibility (bool whole_program)
 	{
 	  struct cgraph_node *alias = cgraph (symtab_nonoverwritable_alias ((symtab_node) node));
 
-	  if (alias != node)
+	  if (alias && alias != node)
 	    {
 	      while (node->callers)
 		{