public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug c++/94632] New: [10 Regression] canonical types differ for identical types since r10-7622-g12f55e030ed068d5
@ 2020-04-17  7:41 marxin at gcc dot gnu.org
  2020-04-17  7:41 ` [Bug c++/94632] " marxin at gcc dot gnu.org
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-04-17  7:41 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94632

            Bug ID: 94632
           Summary: [10 Regression] canonical types differ for identical
                    types since r10-7622-g12f55e030ed068d5
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: ppalka at gcc dot gnu.org
  Target Milestone: ---

It affects the build of libqt5-qtwebengine package:

$ cat wtf.ii
template <typename> struct a;
template <bool> struct b;
template <typename> class c {
  template <typename f> void d(f e, typename b<a<decltype(e)>::h>::g);
public:
  static bool h;
};
bool h = c<int>::h;

$ g++ wtf.ii -c
wtf.ii: In instantiation of ‘class c<int>’:
wtf.ii:8:16:   required from here
wtf.ii:4:30: internal compiler error: canonical types differ for identical
types ‘b<a<decltype (e)>::h>’ and ‘b<a<decltype (e)>::h>’
    4 |   template <typename f> void d(f e, typename b<a<decltype(e)>::h>::g);
      |                              ^
0xb29f7d comptypes(tree_node*, tree_node*, int)
        /home/marxin/Programming/gcc/gcc/cp/typeck.c:1519
0xb299d4 structural_comptypes
        /home/marxin/Programming/gcc/gcc/cp/typeck.c:1410
0xace7ba maybe_rebuild_function_decl_type
        /home/marxin/Programming/gcc/gcc/cp/pt.c:13541
0xace7ba tsubst_function_decl
        /home/marxin/Programming/gcc/gcc/cp/pt.c:13778
0xad0c90 tsubst_template_decl
        /home/marxin/Programming/gcc/gcc/cp/pt.c:14018
0xab94ee tsubst_decl
        /home/marxin/Programming/gcc/gcc/cp/pt.c:14140
0xac2ef7 tsubst(tree_node*, tree_node*, int, tree_node*)
        /home/marxin/Programming/gcc/gcc/cp/pt.c:15026
0xade994 instantiate_class_template_1
        /home/marxin/Programming/gcc/gcc/cp/pt.c:11728
0xade994 instantiate_class_template(tree_node*)
        /home/marxin/Programming/gcc/gcc/cp/pt.c:12036
0xb2579d complete_type(tree_node*)
        /home/marxin/Programming/gcc/gcc/cp/typeck.c:137
0xa76193 cp_parser_nested_name_specifier_opt
        /home/marxin/Programming/gcc/gcc/cp/parser.c:6639
0xa7302e cp_parser_simple_type_specifier
        /home/marxin/Programming/gcc/gcc/cp/parser.c:18126
0xa744e7 cp_parser_postfix_expression
        /home/marxin/Programming/gcc/gcc/cp/parser.c:7173
0xa7d28f cp_parser_unary_expression
        /home/marxin/Programming/gcc/gcc/cp/parser.c:8560
0xa5421f cp_parser_cast_expression
        /home/marxin/Programming/gcc/gcc/cp/parser.c:9451
0xa54a59 cp_parser_binary_expression
        /home/marxin/Programming/gcc/gcc/cp/parser.c:9554
0xa564de cp_parser_assignment_expression
        /home/marxin/Programming/gcc/gcc/cp/parser.c:9859
0xa5548d cp_parser_constant_expression
        /home/marxin/Programming/gcc/gcc/cp/parser.c:10153
0xa55a51 cp_parser_initializer_clause
        /home/marxin/Programming/gcc/gcc/cp/parser.c:23216
0xa59cc7 cp_parser_initializer
        /home/marxin/Programming/gcc/gcc/cp/parser.c:23154
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-04-18 10:57 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-04-17  7:41 [Bug c++/94632] New: [10 Regression] canonical types differ for identical types since r10-7622-g12f55e030ed068d5 marxin at gcc dot gnu.org
2020-04-17  7:41 ` [Bug c++/94632] " marxin at gcc dot gnu.org
2020-04-17 12:27 ` ppalka at gcc dot gnu.org
2020-04-17 13:22 ` ppalka at gcc dot gnu.org
2020-04-18 10:55 ` cvs-commit at gcc dot gnu.org
2020-04-18 10:57 ` ppalka at gcc dot gnu.org

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).