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* [Bug c++/58518] New: [4.8/4.9 regression] ICE template specialization
@ 2013-09-23 22:03 reichelt at gcc dot gnu.org
  2013-09-23 22:20 ` [Bug c++/58518] [4.8/4.9 regression] ICE with " paolo.carlini at oracle dot com
                   ` (5 more replies)
  0 siblings, 6 replies; 7+ messages in thread
From: reichelt at gcc dot gnu.org @ 2013-09-23 22:03 UTC (permalink / raw)
  To: gcc-bugs

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58518

            Bug ID: 58518
           Summary: [4.8/4.9 regression] ICE template specialization
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org

The following valid code snippet triggers an ICE since GCC 4.8.0:

========================================
template<typename T> struct A
{
  template<T, T> struct B {};
  template<T t> struct B<t, t> {};
};

A<int>::B<0, 0> b;
========================================

bug.cc:7:17: internal compiler error: in tsubst, at cp/pt.c:11473
 A<int>::B<0, 0> b;
                 ^
0x5a63d5 tsubst(tree_node*, tree_node*, int, tree_node*)
        ../../gcc/gcc/cp/pt.c:11473
0x5a92a2 convert_template_argument
        ../../gcc/gcc/cp/pt.c:6424
0x5a3135 coerce_template_parms
        ../../gcc/gcc/cp/pt.c:6827
0x5bf864 get_class_bindings
        ../../gcc/gcc/cp/pt.c:18177
0x5c0420 most_specialized_class
        ../../gcc/gcc/cp/pt.c:18398
0x5d0eb0 instantiate_class_template_1
        ../../gcc/gcc/cp/pt.c:8687
0x5d0eb0 instantiate_class_template(tree_node*)
        ../../gcc/gcc/cp/pt.c:9216
0x65cdcb complete_type(tree_node*)
        ../../gcc/gcc/cp/typeck.c:132
0x54da66 start_decl_1(tree_node*, bool)
        ../../gcc/gcc/cp/decl.c:4670
0x577851 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
        ../../gcc/gcc/cp/decl.c:4633
0x649a5a cp_parser_init_declarator
        ../../gcc/gcc/cp/parser.c:16447
0x64a32f cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:10986
0x64c190 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:10867
0x6551ae cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10764
0x653f0d cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10650
0x6557e6 cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:3939
0x6557e6 c_parse_file()
        ../../gcc/gcc/cp/parser.c:28893
0x768164 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]

A little longer testcase triggers an ICE in a different function:

========================================
template<typename T> struct A
{
  typedef typename T::X U;

  template<U, U> struct B {};
  template<U u> struct B<u, u> {};
};

struct C
{
  typedef int X;
};

A<C>::B<0, 0> b;
========================================

bug.cc:14:15: internal compiler error: in dependent_type_p, at cp/pt.c:19969
 A<C>::B<0, 0> b;
               ^
0x588d28 dependent_type_p(tree_node*)
        ../../gcc/gcc/cp/pt.c:19969
0x589504 dependent_scope_p(tree_node*)
        ../../gcc/gcc/cp/pt.c:20000
0x54aed7 make_typename_type(tree_node*, tree_node*, tag_types, int)
        ../../gcc/gcc/cp/decl.c:3331
0x5a5781 tsubst(tree_node*, tree_node*, int, tree_node*)
        ../../gcc/gcc/cp/pt.c:11914
0x5a92a2 convert_template_argument
        ../../gcc/gcc/cp/pt.c:6424
0x5a3135 coerce_template_parms
        ../../gcc/gcc/cp/pt.c:6827
0x5bf864 get_class_bindings
        ../../gcc/gcc/cp/pt.c:18177
0x5c0420 most_specialized_class
        ../../gcc/gcc/cp/pt.c:18398
0x5d0eb0 instantiate_class_template_1
        ../../gcc/gcc/cp/pt.c:8687
0x5d0eb0 instantiate_class_template(tree_node*)
        ../../gcc/gcc/cp/pt.c:9216
0x65cdcb complete_type(tree_node*)
        ../../gcc/gcc/cp/typeck.c:132
0x54da66 start_decl_1(tree_node*, bool)
        ../../gcc/gcc/cp/decl.c:4670
0x577851 start_decl(cp_declarator const*, cp_decl_specifier_seq*, int,
tree_node*, tree_node*, tree_node**)
        ../../gcc/gcc/cp/decl.c:4633
0x649a5a cp_parser_init_declarator
        ../../gcc/gcc/cp/parser.c:16447
0x64a32f cp_parser_simple_declaration
        ../../gcc/gcc/cp/parser.c:10986
0x64c190 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:10867
0x6551ae cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10764
0x653f0d cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10650
0x6557e6 cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:3939
0x6557e6 c_parse_file()
        ../../gcc/gcc/cp/parser.c:28893
Please submit a full bug report, [etc.]


^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2013-12-06 23:52 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2013-09-23 22:03 [Bug c++/58518] New: [4.8/4.9 regression] ICE template specialization reichelt at gcc dot gnu.org
2013-09-23 22:20 ` [Bug c++/58518] [4.8/4.9 regression] ICE with " paolo.carlini at oracle dot com
2013-09-24 12:43 ` mpolacek at gcc dot gnu.org
2013-10-02 21:54 ` paolo.carlini at oracle dot com
2013-10-16  9:49 ` jakub at gcc dot gnu.org
2013-10-20 14:48 ` paolo.carlini at oracle dot com
2013-12-06 23:52 ` reichelt at gcc dot gnu.org

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