[Bug c++/65198] New: [4.9 regression] User-defined literal template inside generic lambda segfaults GCC 5.0

[Bug c++/65198] New: [4.9 regression] User-defined literal template inside generic lambda segfaults GCC 5.0

[jvp4846 at g dot rit.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65198

            Bug ID: 65198
           Summary: [4.9 regression] User-defined literal template inside
                    generic lambda segfaults GCC 5.0
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jvp4846 at g dot rit.edu

Created attachment 34862
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34862&action=edit
Sample code

The attached code causes a segfault under GCC 5.0*, but compiles successfully
under GCC 4.9.2.

* From the Debian repo. Apologies in advance if this is already fixed or is
just a bug in Debian's binary; I won't have time to self-build GCC anytime
soon. The version is as follows:

g++ (Debian 20150211-1) 5.0.0 20150211 (experimental) [trunk revision 220605]

[Bug c++/65198] [4.9 regression] User-defined literal template inside generic lambda segfaults GCC 5.0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65198

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Works for me with 20150220 (r220835).

[Bug c++/65198] [5 Regression] User-defined literal template inside generic lambda segfaults GCC 5.0

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65198

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |5.0
            Summary|[4.9 regression]            |[5 Regression] User-defined
                   |User-defined literal        |literal template inside
                   |template inside generic     |generic lambda segfaults
                   |lambda segfaults GCC 5.0    |GCC 5.0

[Bug c++/65198] [5 Regression] User-defined literal template inside generic lambda segfaults GCC 5.0

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65198

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

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

--- Comment #2 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Fixed by r220656.

This crashes for me with 4.9 though:
0xb7e61f crash_signal
    /home/marek/src/gcc/gcc/toplev.c:337
0xdbb3e4 contains_struct_check
    /home/marek/src/gcc/gcc/tree.h:3047
0xdbb3e4 int_cst_value(tree_node const*)
    /home/marek/src/gcc/gcc/tree.c:10526
0x652434 get_non_default_template_args_count
    /home/marek/src/gcc/gcc/cp/error.c:186
0x65b4d1 dump_template_argument_list
    /home/marek/src/gcc/gcc/cp/error.c:195
0x654905 dump_decl
    /home/marek/src/gcc/gcc/cp/error.c:1181
0x65b497 expr_to_string
    /home/marek/src/gcc/gcc/cp/error.c:2847
0x6600f4 cp_printer
    /home/marek/src/gcc/gcc/cp/error.c:3443
0x10d95e3 pp_format(pretty_printer*, text_info*)
    /home/marek/src/gcc/gcc/pretty-print.c:616
0x10d701c diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
    /home/marek/src/gcc/gcc/diagnostic.c:797
0x10d7d8f internal_error(char const*, ...)
    /home/marek/src/gcc/gcc/diagnostic.c:1136
0x70aa6b cxx_eval_constant_expression
    /home/marek/src/gcc/gcc/cp/semantics.c:9833
0x70dc25 cxx_eval_outermost_constant_expr
    /home/marek/src/gcc/gcc/cp/semantics.c:9853
0x71091b maybe_constant_value(tree_node*)
    /home/marek/src/gcc/gcc/cp/semantics.c:9963
0x5d11c1 build_non_dependent_expr(tree_node*)
    /home/marek/src/gcc/gcc/cp/pt.c:21564
0x6f9d22 finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
    /home/marek/src/gcc/gcc/cp/semantics.c:2250
0x67a61d cp_parser_userdef_numeric_literal
    /home/marek/src/gcc/gcc/cp/parser.c:3926
0x67a61d cp_parser_primary_expression
    /home/marek/src/gcc/gcc/cp/parser.c:4163
0x67b766 cp_parser_postfix_expression
    /home/marek/src/gcc/gcc/cp/parser.c:5971
0x67e057 cp_parser_unary_expression
    /home/marek/src/gcc/gcc/cp/parser.c:7172
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

[Bug c++/65198] [4.9 Regression] User-defined literal template inside generic lambda segfaults

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65198

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at gcc dot gnu.org
      Known to work|                            |5.0
   Target Milestone|5.0                         |4.9.3
            Summary|[5 Regression] User-defined |[4.9 Regression]
                   |literal template inside     |User-defined literal
                   |generic lambda segfaults    |template inside generic
                   |GCC 5.0                     |lambda segfaults
      Known to fail|                            |4.9.2

[Bug c++/65198] [4.9 Regression] User-defined literal template inside generic lambda segfaults

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65198

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 4.9.3 has been released.

[Bug c++/65198] [4.9 Regression] User-defined literal template inside generic lambda segfaults

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65198

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.9.3                       |4.9.4