[Bug c++/98356] New: [9/10/11 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899

[Bug c++/98356] New: [9/10/11 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

            Bug ID: 98356
           Summary: [9/10/11 Regression] ICE in
                    cp_parser_dot_deref_incomplete, at cp/parser.c:7899
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Changed between 20190210 (error) and 20190217 (ICE) :
(typo ; -> .)


$ cat z1.cc
template <template <typename> class T> struct S
{
  using A = T<int>;
  using A::foo;
  void foo ();
  void bar () {foo.}
};


$ g++-11-20201213 -c z1.cc
z1.cc: In member function 'void S<T>::bar()':
z1.cc:6:19: internal compiler error: Segmentation fault
    6 |   void bar () {foo.}
      |                   ^
0xc8f5ff crash_signal
        ../../gcc/toplev.c:327
0x7d8279 cxx_incomplete_type_diagnostic(unsigned int, tree_node const*,
tree_node const*, diagnostic_t)
        ../../gcc/cp/typeck2.c:373
0x72725e cp_parser_dot_deref_incomplete(tree_node**, cp_expr*, bool*)
        ../../gcc/cp/parser.c:7899
0x743cb5 cp_parser_postfix_dot_deref_expression
        ../../gcc/cp/parser.c:7973
0x7414d3 cp_parser_postfix_expression
        ../../gcc/cp/parser.c:7736
0x751a35 cp_parser_unary_expression
        ../../gcc/cp/parser.c:8808
0x72b84f cp_parser_cast_expression
        ../../gcc/cp/parser.c:9712
0x72c082 cp_parser_binary_expression
        ../../gcc/cp/parser.c:9814
0x72c7e0 cp_parser_assignment_expression
        ../../gcc/cp/parser.c:10118
0x72d65c cp_parser_expression
        ../../gcc/cp/parser.c:10288
0x7301e7 cp_parser_expression_statement
        ../../gcc/cp/parser.c:11955
0x73d44f cp_parser_statement
        ../../gcc/cp/parser.c:11751
0x73e344 cp_parser_statement_seq_opt
        ../../gcc/cp/parser.c:12102
0x73e3ff cp_parser_compound_statement
        ../../gcc/cp/parser.c:12052
0x758ff8 cp_parser_function_body
        ../../gcc/cp/parser.c:23975
0x758ff8 cp_parser_ctor_initializer_opt_and_function_body
        ../../gcc/cp/parser.c:24026
0x7594a6 cp_parser_function_definition_after_declarator
        ../../gcc/cp/parser.c:29916
0x759804 cp_parser_late_parsing_for_member
        ../../gcc/cp/parser.c:30827
0x73866a cp_parser_class_specifier_1
        ../../gcc/cp/parser.c:25088
0x739639 cp_parser_class_specifier
        ../../gcc/cp/parser.c:25112

[Bug c++/98356] [9/10/11 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[9/10/11 Regression] ICE in |[9/10/11 Regression] ICE in
                   |cp_parser_dot_deref_incompl |cp_parser_dot_deref_incompl
                   |ete, at cp/parser.c:7899    |ete, at cp/parser.c:7899
                   |                            |since
                   |                            |r9-4841-g2139fd74f31449c0
     Ever confirmed|0                           |1
                 CC|                            |marxin at gcc dot gnu.org,
                   |                            |nathan at gcc dot gnu.org
   Last reconfirmed|                            |2020-12-18
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r9-4841-g2139fd74f31449c0.

[Bug c++/98356] [9/10/11 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Nathan Sidwell <nathan at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|unassigned at gcc dot gnu.org      |nathan at gcc dot gnu.org
             Status|NEW                         |ASSIGNED

--- Comment #2 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
another oldie ...

[Bug c++/98356] [9/10/11 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |9.4
           Priority|P3                          |P2

[Bug c++/98356] [9/10/11/12 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.4                         |9.5

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.

[Bug c++/98356] [10/11/12/13 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.5                         |10.4

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed

[Bug c++/98356] [10/11/12/13 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.4                        |10.5

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.

[Bug c++/98356] [11/12/13/14 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.5                        |11.5

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.

[Bug c++/98356] [11/12/13/14 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mpolacek at gcc dot gnu.org
           Keywords|                            |patch

--- Comment #7 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
This has a patch now:
https://gcc.gnu.org/pipermail/gcc-patches/2024-March/647157.html

[Bug c++/98356] [11/12/13/14 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Nathaniel Shead <nshead@gcc.gnu.org>:

https://gcc.gnu.org/g:940586a63586941a9f2b973491afc8a15a96c98b

commit r14-9357-g940586a63586941a9f2b973491afc8a15a96c98b
Author: Nathaniel Shead <nathanieloshead@gmail.com>
Date:   Tue Mar 5 01:59:41 2024 +1100

    c++: Fix ICE diagnosing incomplete type of overloaded function set
[PR98356]

    In the linked PR the result of 'get_first_fn' is a USING_DECL against
    the template parameter, to be filled in on instantiation. But we don't
    actually need to get the first set of the member functions: it's enough
    to know that we have a (possibly overloaded) member function at all.

            PR c++/98356

    gcc/cp/ChangeLog:

            * typeck2.cc (cxx_incomplete_type_diagnostic): Don't assume
            'member' will be a FUNCTION_DECL (or something like it).

    gcc/testsuite/ChangeLog:

            * g++.dg/pr98356.C: New test.

    Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>

[Bug c++/98356] [11/12/13 Regression] ICE in cp_parser_dot_deref_incomplete, at cp/parser.c:7899 since r9-4841-g2139fd74f31449c0

[law at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98356

Jeffrey A. Law <law at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[11/12/13/14 Regression]    |[11/12/13 Regression] ICE
                   |ICE in                      |in
                   |cp_parser_dot_deref_incompl |cp_parser_dot_deref_incompl
                   |ete, at cp/parser.c:7899    |ete, at cp/parser.c:7899
                   |since                       |since
                   |r9-4841-g2139fd74f31449c0   |r9-4841-g2139fd74f31449c0
                 CC|                            |law at gcc dot gnu.org

--- Comment #9 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Fixed for gcc-14.  Adjusting regression markers.