re PR c++/6057 (expression mangling doesn't work for operator new)

	PR c++/6057
	PR c++/48051
	PR c++/50855
	PR c++/51322
gcc/cp/
	* mangle.c (write_expression): Support NEW_EXPR, DELETE_EXPR,
	THROW_EXPR, CONSTRUCTOR, OVERLOAD.  Fix PREINCREMENT_EXPR and
	PREDECREMENT_EXPR.
	(write_template_arg): Fix mangling of class-scope functions and
	argument packs.
	(mangle_decl): Update suggested -fabi-version argument.
	* operators.def: Add DOTSTAR_EXPR, REINTERPRET_CAST_EXPR,
	DYNAMIC_CAST_EXPR; correct CONST_CAST_EXPR, STATIC_CAST_EXPR.
	* tree.c (dependent_name): No longer static.
	* cp-tree.h: Declare it.
	* pt.c (unify): Defer handling of unconverted functions.
include/
	* demangle.h (enum demangle_component_type): Add
	DEMANGLE_COMPONENT_INITIALIZER_LIST, DEMANGLE_COMPONENT_NULLARY.
libiberty/
	* cp-demangle.c (d_dump): Handle DEMANGLE_COMPONENT_NULLARY and
	DEMANGLE_COMPONENT_INITIALIZER_LIST.
	(d_make_comp): Likewise.  Allow null right arg for
	DEMANGLE_COMPONENT_TRINARY_ARG2.
	(cplus_demangle_operators): Adjust new/delete; add .*, :: and throw.
	(d_template_args, d_template_arg): Handle 'J' for argument packs.
	(d_exprlist): Add terminator parm.
	(d_expression, d_print_comp): Handle initializer lists, nullary
	expressions, prefix/suffix operators, and new.
	(d_print_subexpr): Avoid parens around DEMANGLE_COMPONENT_QUAL_NAME
	and DEMANGLE_COMPONENT_INITIALIZER_LIST.
	* testsuite/demangle-expected: Add tests.

From-SVN: r182970

gcc/common.opt

@@ -782,7 +782,10 @@ Driver Undocumented
 ;    function parameters used in other parameters and the return type.
 ;    First selectable in G++ 4.6.
 ;
-; 6: The version of the ABI that doesn't promote scoped enums to int.
+; 6: The version of the ABI that doesn't promote scoped enums to int and
+;    changes the mangling of template argument packs, const/static_cast,
+;    prefix ++ and --, and a class scope function used as a template
+;    argument.
 ;    First selectable in G++ 4.7.
 ;
 ; Additional positive integers will be assigned as new versions of

gcc/cp/ChangeLog

 2012-01-06  Jason Merrill  <jason@redhat.com>
 
+	PR c++/6057
+	PR c++/48051
+	PR c++/50855
+	PR c++/51322
+	* mangle.c (write_expression): Support NEW_EXPR, DELETE_EXPR,
+	THROW_EXPR, CONSTRUCTOR, OVERLOAD.  Fix PREINCREMENT_EXPR and
+	PREDECREMENT_EXPR.
+	(write_template_arg): Fix mangling of class-scope functions and
+	argument packs.
+	(mangle_decl): Update suggested -fabi-version argument.
+	* operators.def: Add DOTSTAR_EXPR, REINTERPRET_CAST_EXPR,
+	DYNAMIC_CAST_EXPR; correct CONST_CAST_EXPR, STATIC_CAST_EXPR.
+	* tree.c (dependent_name): No longer static.
+	* cp-tree.h: Declare it.
+	* pt.c (unify): Defer handling of unconverted functions.
+
 	* mangle.c (mangle_decl): Don't generate mangling aliases
 	for maybe-in-charge [cd]tors.
 

gcc/cp/cp-tree.h

@@ -5674,6 +5674,7 @@ extern tree hash_tree_cons			(tree, tree, tree);
 extern tree hash_tree_chain			(tree, tree);
 extern tree build_qualified_name		(tree, tree, tree, bool);
 extern int is_overloaded_fn			(tree);
+extern tree dependent_name			(tree);
 extern tree get_fns				(tree);
 extern tree get_first_fn			(tree);
 extern tree ovl_cons				(tree, tree);

gcc/cp/mangle.c

@@ -2646,6 +2646,102 @@ write_expression (tree expr)
       write_expression (TREE_OPERAND (expr, 0));
       write_expression (TREE_OPERAND (expr, 2));
     }
+  else if (code == NEW_EXPR || code == VEC_NEW_EXPR)
+    {
+      /* ::= [gs] nw <expression>* _ <type> E
+	 ::= [gs] nw <expression>* _ <type> <initializer>
+	 ::= [gs] na <expression>* _ <type> E
+	 ::= [gs] na <expression>* _ <type> <initializer>
+	 <initializer> ::= pi <expression>* E  */
+      tree placement = TREE_OPERAND (expr, 0);
+      tree type = TREE_OPERAND (expr, 1);
+      tree nelts = TREE_OPERAND (expr, 2);
+      tree init = TREE_OPERAND (expr, 3);
+      tree t;
+
+      gcc_assert (code == NEW_EXPR);
+      if (TREE_OPERAND (expr, 2))
+	code = VEC_NEW_EXPR;
+
+      if (NEW_EXPR_USE_GLOBAL (expr))
+	write_string ("gs");
+
+      write_string (operator_name_info[(int) code].mangled_name);
+
+      for (t = placement; t; t = TREE_CHAIN (t))
+	write_expression (TREE_VALUE (t));
+
+      write_char ('_');
+
+      if (nelts)
+	{
+	  tree domain;
+	  ++processing_template_decl;
+	  domain = compute_array_index_type (NULL_TREE, nelts,
+					     tf_warning_or_error);
+	  type = build_cplus_array_type (type, domain);
+	  --processing_template_decl;
+	}
+      write_type (type);
+
+      if (init && TREE_CODE (init) == TREE_LIST
+	  && TREE_CODE (TREE_VALUE (init)) == CONSTRUCTOR
+	  && CONSTRUCTOR_IS_DIRECT_INIT (TREE_VALUE (init)))
+	write_expression (TREE_VALUE (init));
+      else
+	{
+	  if (init)
+	    write_string ("pi");
+	  if (init && init != void_zero_node)
+	    for (t = init; t; t = TREE_CHAIN (t))
+	      write_expression (TREE_VALUE (t));
+	  write_char ('E');
+	}
+    }
+  else if (code == DELETE_EXPR || code == VEC_DELETE_EXPR)
+    {
+      gcc_assert (code == DELETE_EXPR);
+      if (DELETE_EXPR_USE_VEC (expr))
+	code = VEC_DELETE_EXPR;
+
+      if (DELETE_EXPR_USE_GLOBAL (expr))
+	write_string ("gs");
+
+      write_string (operator_name_info[(int) code].mangled_name);
+
+      write_expression (TREE_OPERAND (expr, 0));
+    }
+  else if (code == THROW_EXPR)
+    {
+      tree op = TREE_OPERAND (expr, 0);
+      if (op)
+	{
+	  write_string ("tw");
+	  write_expression (op);
+	}
+      else
+	write_string ("tr");
+    }
+  else if (code == CONSTRUCTOR)
+    {
+      VEC(constructor_elt,gc)* elts = CONSTRUCTOR_ELTS (expr);
+      unsigned i; tree val;
+
+      if (BRACE_ENCLOSED_INITIALIZER_P (expr))
+	write_string ("il");
+      else
+	{
+	  write_string ("tl");
+	  write_type (TREE_TYPE (expr));
+	}
+      FOR_EACH_CONSTRUCTOR_VALUE (elts, i, val)
+	write_expression (val);
+      write_char ('E');
+    }
+  else if (dependent_name (expr))
+    {
+      write_unqualified_id (dependent_name (expr));
+    }
   else
     {
       int i, len;
@@ -2688,6 +2784,16 @@ write_expression (tree expr)
 
       /* If it wasn't any of those, recursively expand the expression.  */
       name = operator_name_info[(int) code].mangled_name;
+
+      /* We used to mangle const_cast and static_cast like a C cast.  */
+      if (!abi_version_at_least (6)
+	  && (code == CONST_CAST_EXPR
+	      || code == STATIC_CAST_EXPR))
+	{
+	  name = operator_name_info[CAST_EXPR].mangled_name;
+	  G.need_abi_warning = 1;
+	}
+
       if (name == NULL)
 	{
 	  sorry ("mangling %C", code);
@@ -2734,16 +2840,21 @@ write_expression (tree expr)
 	    }
 	  break;
 
-	  /* FIXME these should have a distinct mangling.  */
+	case DYNAMIC_CAST_EXPR:
+	case REINTERPRET_CAST_EXPR:
 	case STATIC_CAST_EXPR:
 	case CONST_CAST_EXPR:
 	  write_type (TREE_TYPE (expr));
 	  write_expression (TREE_OPERAND (expr, 0));
 	  break;
 
-	case NEW_EXPR:
-	  sorry ("mangling new-expression");
-	  break;
+	case PREINCREMENT_EXPR:
+	case PREDECREMENT_EXPR:
+	  if (abi_version_at_least (6))
+	    write_char ('_');
+	  else
+	    G.need_abi_warning = 1;
+	  /* Fall through.  */
 
 	default:
 	  /* In the middle-end, some expressions have more operands than
@@ -2855,12 +2966,28 @@ write_template_arg (tree node)
 	G.need_abi_warning = 1;
     }
 
+  if (TREE_CODE (node) == BASELINK
+      && !type_unknown_p (node))
+    {
+      if (abi_version_at_least (6))
+	node = BASELINK_FUNCTIONS (node);
+      else
+	/* We wrongly wrapped a class-scope function in X/E.  */
+	G.need_abi_warning = 1;
+    }
+
   if (ARGUMENT_PACK_P (node))
     {
       /* Expand the template argument pack. */
       tree args = ARGUMENT_PACK_ARGS (node);
       int i, length = TREE_VEC_LENGTH (args);
-      write_char ('I');
+      if (abi_version_at_least (6))
+	write_char ('J');
+      else
+	{
+	  write_char ('I');
+	  G.need_abi_warning = 1;
+	}
       for (i = 0; i < length; ++i)
         write_template_arg (TREE_VEC_ELT (args, i));
       write_char ('E');
@@ -3208,8 +3335,8 @@ mangle_decl (const tree decl)
 
       SET_IDENTIFIER_GLOBAL_VALUE (id, decl);
       if (IDENTIFIER_GLOBAL_VALUE (id) != decl)
-	inform (DECL_SOURCE_LOCATION (decl), "-fabi-version=4 (or =0) "
-		"avoids this error with a change in vector mangling");
+	inform (DECL_SOURCE_LOCATION (decl), "-fabi-version=6 (or =0) "
+		"avoids this error with a change in mangling");
 
 #ifdef ASM_OUTPUT_DEF
       save_ver = flag_abi_version;

gcc/cp/operators.def

@@ -101,8 +101,10 @@ DEF_SIMPLE_OPERATOR ("__real__", REALPART_EXPR, "v18__real__", 1)
 /* The cast operator.  */
 DEF_SIMPLE_OPERATOR ("", TYPE_EXPR, "cv", 1)
 DEF_SIMPLE_OPERATOR ("", CAST_EXPR, "cv", 1)
-DEF_SIMPLE_OPERATOR ("", CONST_CAST_EXPR, "cv", 1)
-DEF_SIMPLE_OPERATOR ("", STATIC_CAST_EXPR, "cv", 1)
+DEF_SIMPLE_OPERATOR ("dynamic_cast", DYNAMIC_CAST_EXPR, "dc", 1)
+DEF_SIMPLE_OPERATOR ("reinterpret_cast", REINTERPRET_CAST_EXPR, "rc", 1)
+DEF_SIMPLE_OPERATOR ("const_cast", CONST_CAST_EXPR, "cc", 1)
+DEF_SIMPLE_OPERATOR ("static_cast", STATIC_CAST_EXPR, "sc", 1)
 
 /* Binary operators.  */
 DEF_SIMPLE_OPERATOR ("+", PLUS_EXPR, "pl", 2)
@@ -125,6 +127,7 @@ DEF_SIMPLE_OPERATOR ("&&", TRUTH_ANDIF_EXPR, "aa", 2)
 DEF_SIMPLE_OPERATOR ("||", TRUTH_ORIF_EXPR, "oo", 2)
 DEF_SIMPLE_OPERATOR (",", COMPOUND_EXPR, "cm", 2)
 DEF_SIMPLE_OPERATOR ("->*", MEMBER_REF, "pm", 2)
+DEF_SIMPLE_OPERATOR (".*", DOTSTAR_EXPR, "ds", 2)
 DEF_SIMPLE_OPERATOR ("->", COMPONENT_REF, "pt", 2)
 DEF_SIMPLE_OPERATOR ("[]", ARRAY_REF, "ix", 2)
 DEF_SIMPLE_OPERATOR ("++", POSTINCREMENT_EXPR, "pp", 2)

gcc/cp/pt.c

@@ -16885,7 +16885,7 @@ unify (tree tparms, tree targs, tree parm, tree arg, int strict,
 
     default:
       /* An unresolved overload is a nondeduced context.  */
-      if (type_unknown_p (parm))
+      if (is_overloaded_fn (parm) || type_unknown_p (parm))
 	return unify_success (explain_p);
       gcc_assert (EXPR_P (parm));
 

gcc/cp/tree.c

@@ -1457,7 +1457,7 @@ is_overloaded_fn (tree x)
    (14.6.2), return the IDENTIFIER_NODE for that name.  Otherwise, return
    NULL_TREE.  */
 
-static tree
+tree
 dependent_name (tree x)
 {
   if (TREE_CODE (x) == IDENTIFIER_NODE)

gcc/testsuite/ChangeLog

 2012-01-06  Jason Merrill  <jason@redhat.com>
 
+	* g++.dg/abi/mangle51.C: New.
+	* g++.dg/abi/mangle52.C: New.
+	* g++.dg/abi/mangle53.C: New.
+	* g++.dg/abi/mangle54.C: New.
+	* g++.dg/abi/mangle55.C: New.
+	* g++.dg/abi/mangle56.C: New.
+	* g++.dg/abi/mangle57.C: New.
+	* g++.dg/abi/mangle58.C: New.
+	* g++.dg/abi/mangle59.C: New.
+	* g++.dg/cpp0x/trailing3.C: Update mangling.
+	* g++.dg/cpp0x/variadic111.C: Update mangling.
+	* g++.dg/cpp0x/variadic4.C: Update mangling.
+	* g++.dg/cpp0x/variadic42.C: Pass -fabi-version=5.
+	* g++.dg/template/nontype22.C: Works now.
+	* g++.dg/template/pr35240.C: Works now.
+
 	* g++.dg/cpp0x/error7.C: New.
 
 2012-01-06  Tobias Burnus <burnus@net-b.de>

gcc/testsuite/g++.dg/abi/mangle51.C

+// { dg-options "-std=c++0x -fabi-version=0" }
+
+void* operator new (__SIZE_TYPE__, void *p) { return p; }
+int i;
+
+template <unsigned int> struct helper {};
+// { dg-final { scan-assembler "_Z6check1IiEvP6helperIXsznw_T_EEE" } }
+template <class T> void check1( helper<sizeof(new T)> * ) { }
+// { dg-final { scan-assembler "_Z6check2IiEvP6helperIXszgsnw_T_piEEE" } }
+template <class T> void check2( helper<sizeof(::new T())> * ) { }
+// { dg-final { scan-assembler "_Z6check3IiEvP6helperIXsznwadL_Z1iE_T_piLi1EEEE" } }
+template <class T> void check3( helper<sizeof(new (&i) T(1))> * ) { }
+// { dg-final { scan-assembler "_Z7check3aIiEvP6helperIXsznw_T_ilLi1EEEE" } }
+template <class T> void check3a( helper<sizeof(new T{1})> * ) { }
+// { dg-final { scan-assembler "_Z6check4IiEvP6helperIXszna_A1_T_EEE" } }
+template <class T> void check4( helper<sizeof(new T[1])> * ) { }
+// { dg-final { scan-assembler "_Z6check5IiEvP6helperIXszna_A1_T_piEEE" } }
+template <class T> void check5( helper<sizeof(new T[1]())> * ) { }
+int main()
+{
+  check1<int>(0);
+  check2<int>(0);
+  check3<int>(0);
+  check3a<int>(0);
+  check4<int>(0);
+  check5<int>(0);
+}

gcc/testsuite/g++.dg/abi/mangle52.C

+// { dg-options "-fabi-version=0" }
+
+template <unsigned int> struct helper {};
+// { dg-final { scan-assembler "_Z6check1IiEvP6helperIXszscT_Li1EEE" } }
+template <class T> void check1( helper<sizeof(static_cast<T>(1))> * ) { }
+// { dg-final { scan-assembler "_Z6check2IiXadL_Z1iEEEvP6helperIXszccPT_T0_EE" } }
+template <class T, T* p> void check2( helper<sizeof(const_cast<T*>(p))> * ) { }
+// { dg-final { scan-assembler "_Z6check3IiEvP6helperIXszrcPT_Li0EEE" } }
+template <class T> void check3( helper<sizeof(reinterpret_cast<T*>(0))> * ) { }
+// { dg-final { scan-assembler "_Z6check4I1AXadL_Z1aEEEvP6helperIXszdcPT_T0_EE" } }
+template <class T, T* p> void check4( helper<sizeof(dynamic_cast<T*>(p))> * ) { }
+
+struct A{} a;
+int i;
+int main()
+{
+  check1<int>(0);
+  check2<int,&i>(0);
+  check3<int>(0);
+  check4<A,&a>(0);
+}

gcc/testsuite/g++.dg/abi/mangle53.C

+// { dg-options "-std=c++0x" }
+
+bool b;
+// { dg-final { scan-assembler "_Z1fIiEDTquL_Z1bEfp_twLi42EET_" } }
+template <class T> auto f (T t) -> decltype(b?t:throw 42) { return 0; }
+// { dg-final { scan-assembler "_Z2f2IiEDTquL_Z1bEfp_trET_" } }
+template <class T> auto f2 (T t) -> decltype(b?t:throw) { return 0; }
+
+int main()
+{
+  f(0);
+  f2(0);
+}

gcc/testsuite/g++.dg/abi/mangle54.C

+// { dg-options "-std=c++0x -fabi-version=0" }
+
+int i;
+// { dg-final { scan-assembler "_Z2f1IiEDTppfp_ET_" } }
+template <class T> auto f1 (T t) -> decltype(t++) { return i; }
+// { dg-final { scan-assembler "_Z2f2IiEDTpp_fp_ET_" } }
+template <class T> auto f2 (T t) -> decltype(++t) { return i; }
+// { dg-final { scan-assembler "_Z2f3IiEDTmmfp_ET_" } }
+template <class T> auto f3 (T t) -> decltype(t--) { return i; }
+// { dg-final { scan-assembler "_Z2f4IiEDTmm_fp_ET_" } }
+template <class T> auto f4 (T t) -> decltype(--t) { return i; }
+
+int main()
+{
+  f1(0);
+  f2(0);
+  f3(0);
+  f4(0);
+}

gcc/testsuite/g++.dg/abi/mangle55.C

+// { dg-options "-std=c++0x" }
+
+struct A { int i; };
+// { dg-final { scan-assembler "_Z2f1Ii1AEDTdsfp_fp0_ET0_MS2_T_" } }
+template <class T, class U> auto f1 (U u, T U::* p) -> decltype(u.*p) { return u.*p; }
+// { dg-final { scan-assembler "_Z2f2Ii1AEDTpmfp_fp0_EPT0_MS2_T_" } }
+template <class T, class U> auto f2 (U* u, T U::* p) -> decltype(u->*p) { return u->*p; }
+
+int main()
+{
+  A a = {};
+  f1(a, &A::i);
+  f2(&a, &A::i);
+}

gcc/testsuite/g++.dg/abi/mangle56.C

+// { dg-options "-std=c++0x" }
+
+template <class T> T g(T t1, T t2) { return t2; }
+// { dg-final { scan-assembler "_Z2f1IiEDTcl1gfp_ilEEET_" } }
+template <class T> auto f1 (T t) -> decltype(g(t,{})) { return g(t,{}); }
+// { dg-final { scan-assembler "_Z2f2IiEDTcl1gfp_tlT_EEES0_" } }
+template <class T> auto f2 (T t) -> decltype(g(t,T{})) { return g(t,T{}); }
+
+int main()
+{
+  f1(0);
+  f2(0);
+}

gcc/testsuite/g++.dg/abi/mangle57.C

+// { dg-options "-std=c++0x -fabi-version=0" }
+
+template<typename T> int cmp1(T a, T b);
+int cmp2(char a, char b);
+template<typename T, int (*cmp)(T, T)> struct A { };
+// { dg-final { scan-assembler "_Z1fIcEvR1AIT_X4cmp1EE" } }
+template <typename T> void f (A<T,cmp1> &);
+// { dg-final { scan-assembler "_Z1fIcEvR1AIT_L_Z4cmp2ccEE" } }
+template <typename T> void f (A<T,cmp2> &);
+void g()
+{
+  A<char,cmp1> a;
+  f(a);
+  A<char,cmp2> a2;
+  f(a2);
+}

gcc/testsuite/g++.dg/abi/mangle58.C

+// { dg-options "-std=c++0x -fabi-version=0" }
+
+template<typename T, int (*cmp)(T, T)> struct A { };
+struct B {
+  template<typename T> static int cmp1(T a, T b);
+  static int cmp2(char a, char b);
+  // { dg-final { scan-assembler "_ZN1B1fIcEEvR1AIT_X4cmp1EE" } }
+  template <typename T> static void f (A<T,cmp1> &);
+  // { dg-final { scan-assembler "_ZN1B1fIcEEvR1AIT_L_ZNS_4cmp2EccEE" } }
+  template <typename T> static void f (A<T,cmp2> &);
+};
+
+void g()
+{
+  A<char,B::cmp1> a;
+  B::f(a);
+  A<char,B::cmp2> a2;
+  B::f(a2);
+}

gcc/testsuite/g++.dg/abi/mangle59.C

+// { dg-options "-std=c++0x -fabi-version=0" }
+
+// { dg-final { scan-assembler "_Z1fIiEDTcmdlfp_psfp_EPT_" } }
+template <class T> auto f (T* p) -> decltype(delete p, +p) { return p; }
+// { dg-final { scan-assembler "_Z1gIiEDTcmgsdlfp_psfp_EPT_" } }
+template <class T> auto g (T* p) -> decltype(::delete p, +p) { return p; }
+// { dg-final { scan-assembler "_Z1hIiEDTcmdafp_psfp_EPT_" } }
+template <class T> auto h (T* p) -> decltype(delete[] p, +p) { return p; }
+// { dg-final { scan-assembler "_Z1iIiEDTcmgsdafp_psfp_EPT_" } }
+template <class T> auto i (T* p) -> decltype(::delete[] p, +p) { return p; }
+
+int main()
+{
+  int x;
+  f(&x);
+  g(&x);
+  h(&x);
+  i(&x);
+}

gcc/testsuite/g++.dg/cpp0x/trailing3.C

 // More auto/decltype mangling tests.
-// { dg-options "-std=c++0x" }
+// { dg-options "-std=c++0x -fabi-version=0" }
 
 template <class T>
 struct B
@@ -58,6 +58,6 @@ int main()
   A<int>().h(1);
   // { dg-final { scan-assembler  "_ZN1AIiE1jIiEEDTplfp_clL_Z1xvEEET_" } }
   A<int>().j(1);
-  // { dg-final { scan-assembler  "_Z1gIIidEEDTcl1fspplfp_Li1EEEDpT_" } }  
+  // { dg-final { scan-assembler  "_Z1gIJidEEDTcl1fspplfp_Li1EEEDpT_" } }
   g(42, 1.0);
 }

gcc/testsuite/g++.dg/cpp0x/variadic111.C

 // PR c++/48424
-// { dg-options -std=c++0x }
+// { dg-options "-std=c++0x -fabi-version=0" }
 
 template<typename... Args1>
 struct S
@@ -16,4 +16,4 @@ int main()
   s.f(1,2.0,false,'a');
 }
 
-// { dg-final { scan-assembler "_ZN1SIIidEE1fIIbcEEEvidDpOT_" } }
+// { dg-final { scan-assembler "_ZN1SIJidEE1fIJbcEEEvidDpOT_" } }

gcc/testsuite/g++.dg/cpp0x/variadic4.C

-// { dg-options "-std=gnu++0x" }
+// { dg-options "-std=gnu++0x -fabi-version=0" }
 // { dg-do compile }
 template<typename... Args>
 class tuple {};
@@ -9,7 +9,7 @@ void f_two(tuple<int, float>) {}
 void f_nested(tuple<int, tuple<double, char>, float>) { }
 
 
-// { dg-final { scan-assembler "_Z6f_none5tupleIIEE" } }
-// { dg-final { scan-assembler "_Z5f_one5tupleIIiEE" } }
-// { dg-final { scan-assembler "_Z5f_two5tupleIIifEE" } }
-// { dg-final { scan-assembler "_Z8f_nested5tupleIIiS_IIdcEEfEE" } }
+// { dg-final { scan-assembler "_Z6f_none5tupleIJEE" } }
+// { dg-final { scan-assembler "_Z5f_one5tupleIJiEE" } }
+// { dg-final { scan-assembler "_Z5f_two5tupleIJifEE" } }
+// { dg-final { scan-assembler "_Z8f_nested5tupleIJiS_IJdcEEfEE" } }

gcc/testsuite/g++.dg/cpp0x/variadic42.C

-// { dg-options "-std=gnu++0x" }
+// { dg-options "-std=gnu++0x -fabi-version=5" }
 // { dg-do compile }
 template<typename... Args>
 void f(Args...) { }

gcc/testsuite/g++.dg/template/nontype22.C

@@ -3,7 +3,7 @@
 
 template<typename T> int cmp1(T a, T b);
 template<typename T, int (*cmp)(T, T) = cmp1> struct A { };
-template <typename T> void f (A<T> &); // { dg-bogus "" "" { xfail *-*-* } }
+template <typename T> void f (A<T> &);
 void g()
 {
   A<char> a;

gcc/testsuite/g++.dg/template/pr35240.C

 // PR c++/35240
 // { dg-do compile }
 
-
 template<int> struct A {};
 
-template<int N> A<sizeof(new int[N][N])> foo(); // { dg-message "unimplemented" }
+template<int N> A<sizeof(new int[N][N])> foo();
 
 void bar()
 {
-  foo<1>(); // { dg-message "required" }
+  foo<1>();
 }

include/ChangeLog

+2012-01-06  Jason Merrill  <jason@redhat.com>
+
+	PR c++/6057
+	PR c++/48051
+	PR c++/50855
+	PR c++/51322
+	* demangle.h (enum demangle_component_type): Add
+	DEMANGLE_COMPONENT_INITIALIZER_LIST, DEMANGLE_COMPONENT_NULLARY.
+
 2011-11-07  Richard Henderson  <rth@redhat.com>
 
 	Merged from transactional-memory.

include/demangle.h

@@ -344,6 +344,9 @@ enum demangle_component_type
      template argument, and the right subtree is either NULL or
      another TEMPLATE_ARGLIST node.  */
   DEMANGLE_COMPONENT_TEMPLATE_ARGLIST,
+  /* An initializer list.  The left subtree is either an explicit type or
+     NULL, and the right subtree is a DEMANGLE_COMPONENT_ARGLIST.  */
+  DEMANGLE_COMPONENT_INITIALIZER_LIST,
   /* An operator.  This holds information about a standard
      operator.  */
   DEMANGLE_COMPONENT_OPERATOR,
@@ -353,6 +356,8 @@ enum demangle_component_type
   /* A typecast, represented as a unary operator.  The one subtree is
      the type to which the argument should be cast.  */
   DEMANGLE_COMPONENT_CAST,
+  /* A nullary expression.  The left subtree is the operator.  */
+  DEMANGLE_COMPONENT_NULLARY,
   /* A unary expression.  The left subtree is the operator, and the
      right subtree is the single argument.  */
   DEMANGLE_COMPONENT_UNARY,

libiberty/ChangeLog

 2012-01-06  Jason Merrill  <jason@redhat.com>
 
+	PR c++/6057
+	PR c++/48051
+	PR c++/50855
+	PR c++/51322
+	* cp-demangle.c (d_dump): Handle DEMANGLE_COMPONENT_NULLARY and
+	DEMANGLE_COMPONENT_INITIALIZER_LIST.
+	(d_make_comp): Likewise.  Allow null right arg for
+	DEMANGLE_COMPONENT_TRINARY_ARG2.
+	(cplus_demangle_operators): Adjust new/delete; add .*, :: and throw.
+	(d_template_args, d_template_arg): Handle 'J' for argument packs.
+	(d_exprlist): Add terminator parm.
+	(d_expression, d_print_comp): Handle initializer lists, nullary
+	expressions, prefix/suffix operators, and new.
+	(d_print_subexpr): Avoid parens around DEMANGLE_COMPONENT_QUAL_NAME
+	and DEMANGLE_COMPONENT_INITIALIZER_LIST.
+	* testsuite/demangle-expected: Add tests.
+
 	* cp-demangle.c (cplus_demangle_type): decltype, pack expansion
 	and vector are substitutable.
 	(cplus_demangle_operators): Sort.

libiberty/testsuite/demangle-expected

@@ -3935,7 +3935,7 @@ _Z1tIlEDTplcvT_Li5EclL_Z1qsELi6EEEv
 decltype (((long)(5))+(q(6))) t<long>()
 # test for expansion of function parameter pack
 --format=gnu-v3
-_Z1gIIidEEDTclL_Z1fEspplfp_Li1EEEDpT_
+_Z1gIJidEEDTclL_Z1fEspplfp_Li1EEEDpT_
 decltype (f(({parm#1}+(1))...)) g<int, double>(int, double)
 # lambda tests
 --format=gnu-v3
@@ -4030,6 +4030,45 @@ decltype ((int)()) f<int, int>(int, int)
 --format=gnu-v3
 _Z1fDv4_iS_
 f(int __vector(4), int __vector(4))
+--format=gnu-v3
+_Z2f1Ii1AEDTdsfp_fp0_ET0_MS2_T_
+decltype ({parm#1}.*{parm#2}) f1<int, A>(A, int A::*)
+--format=gnu-v3
+_Z2f2IiEDTquL_Z1bEfp_trET_
+decltype (b?{parm#1} : (throw)) f2<int>(int)
+--format=gnu-v3
+_Z6check1IiEvP6helperIXsznw_T_EEE
+void check1<int>(helper<sizeof (new int)>*)
+--format=gnu-v3
+_Z6check2IiEvP6helperIXszgsnw_T_piEEE
+void check2<int>(helper<sizeof (::new int())>*)
+--format=gnu-v3
+_Z6check3IiEvP6helperIXsznwadL_Z1iE_T_piLi1EEEE
+void check3<int>(helper<sizeof (new (&i) int(1))>*)
+--format=gnu-v3
+_Z6check4IiEvP6helperIXszna_A1_T_EEE
+void check4<int>(helper<sizeof (new int [1])>*)
+--format=gnu-v3
+_Z6check5IiEvP6helperIXszna_A1_T_piEEE
+void check5<int>(helper<sizeof (new int [1]())>*)
+--format=gnu-v3
+_Z1fIiEDTcmgsdlfp_psfp_EPT_
+decltype ((::delete {parm#1}),(+{parm#1})) f<int>(int*)
+--format=gnu-v3
+_Z1fIiEDTcmdafp_psfp_EPT_
+decltype ((delete[] {parm#1}),(+{parm#1})) f<int>(int*)
+--format=gnu-v3
+_Z2f1IiEDTppfp_ET_
+decltype ({parm#1}++) f1<int>(int)
+--format=gnu-v3
+_Z2f1IiEDTpp_fp_ET_
+decltype (++{parm#1}) f1<int>(int)
+--format=gnu-v3
+_Z2f1IiEDTcl1gfp_ilEEET_
+decltype (g({parm#1}, {})) f1<int>(int)
+--format=gnu-v3
+_Z2f1IiEDTnw_T_ilEES0_
+decltype (new int{}) f1<int>(int)
 #
 # Ada (GNAT) tests.
 #

libstdc++-v3/ChangeLog

+2012-01-06  Jason Merrill  <jason@redhat.com>
+
+	* testsuite/abi/demangle/regression/cw-16.cc (main): Adjust
+	expected demangling.
+
 2012-01-06  Jonathan Wakely  <jwakely.gcc@gmail.com>
 
 	PR libstdc++/51504

libstdc++-v3/testsuite/abi/demangle/regression/cw-16.cc

@@ -39,7 +39,7 @@ verify_demangle("_Z1fPFYPFiiEiE",
 verify_demangle("_Z1fI1XENT_1tES2_",
                 "X::t f<X>(X::t)");
 verify_demangle("_Z1fILi5E1AEvN1CIXstN1T1tEEXszsrS2_1tEE1qE",
-                "void f<5, A>(C<sizeof (T::t), sizeof (T::t)>::q)");
+                "void f<5, A>(C<sizeof (T::t), sizeof T::t>::q)");
 // 2003/12/03, libstdc++/13045
 verify_demangle("_Z1fILi1ELc120EEv1AIXplT_cviLd4028ae147ae147aeEEE",
                 "void f<1, (char)120>(A<(1)+((int)((double)[4028ae147ae147ae]))>)");