re PR middle-end/61558 (ICE: Segmentation fault)

	PR ipa/61558
	* symtab.c (symbol_table::insert_to_assembler_name_hash
	symbol_table::unlink_from_assembler_name_hash): Do not ICE when	
	DECL_ASSEMBLER_NAME is NULL.

From-SVN: r218729

gcc/ChangeLog

 2014-12-14  Jan Hubicka  <hubicka@ucw.cz>
 
+	PR ipa/61558
+	* symtab.c (symbol_table::insert_to_assembler_name_hash
+	symbol_table::unlink_from_assembler_name_hash): Do not ICE when	
+	DECL_ASSEMBLER_NAME is NULL.
+
+2014-12-14  Jan Hubicka  <hubicka@ucw.cz>
+
 	* cgraphunit.c (analyze_functions): Always analyze targets of aliases.
 
 2014-12-14  Jan Hubicka  <hubicka@ucw.cz>

gcc/symtab.c

@@ -168,6 +168,11 @@ symbol_table::insert_to_assembler_name_hash (symtab_node *node,
 
       tree name = DECL_ASSEMBLER_NAME (node->decl);
 
+      /* C++ FE can produce decls without associated assembler name and insert
+	 them to symtab to hold section or TLS information.  */
+      if (!name)
+	return;
+
       hashval_t hash = decl_assembler_name_hash (name);
       aslot = assembler_name_hash->find_slot_with_hash (name, hash, INSERT);
       gcc_assert (*aslot != node);
@@ -209,6 +214,10 @@ symbol_table::unlink_from_assembler_name_hash (symtab_node *node,
 	{
 	  tree name = DECL_ASSEMBLER_NAME (node->decl);
           symtab_node **slot;
+
+	  if (!name)
+	    return;
+
 	  hashval_t hash = decl_assembler_name_hash (name);
 	  slot = assembler_name_hash->find_slot_with_hash (name, hash,
 							   NO_INSERT);

gcc/testsuite/ChangeLog

-2014-12-14  Jan HUbicka  <hubicka@ucw.cz>
+2014-12-14  Jan Hubicka  <hubicka@ucw.cz>	
+	
+	PR ipa/61558
+	* g++.dg/torture/pr61558.C: New testcase.
+
+2014-12-14  Jan Hubicka  <hubicka@ucw.cz>
 
 	PR lto/64043
 	* g++.dg/lto/pr64043_0.C: New testcase.

gcc/testsuite/g++.dg/torture/pr61558.C

+// { dg-do compile }
+static __typeof 0 a __attribute__ ((__weakref__ ("")));
+template <typename> class A
+{
+  static __thread int b;
+};