[Bug c++/94153] New: internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[Bug c++/94153] New: internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[v.barinov at samsung dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

            Bug ID: 94153
           Summary: internal compiler error: in cp_lexer_new_from_tokens,
                    at cp/parser.c:700
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: v.barinov at samsung dot com
  Target Milestone: ---

Created attachment 48023
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48023&action=edit
reduced reprocase

parser-ice.ii:2:3: internal compiler error: in cp_lexer_new_from_tokens, at
cp/parser.c:700
    2 |   a < class {           b(  {
      |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~
0x66471b cp_parser_push_lexer_for_tokens
        /mnt/gcc/gcc/cp/parser.c:700
0x9d8ec5 cp_parser_late_parsing_for_member
        /mnt/gcc/gcc/cp/parser.c:29776
0x9b73db cp_parser_class_specifier_1
        /mnt/gcc/gcc/cp/parser.c:24085
0x9b8383 cp_parser_class_specifier
        /mnt/gcc/gcc/cp/parser.c:24109
0x9b8383 cp_parser_type_specifier
        /mnt/gcc/gcc/cp/parser.c:17666
0x9b940b cp_parser_decl_specifier_seq
        /mnt/gcc/gcc/cp/parser.c:14314
0x9df435 cp_parser_single_declaration
        /mnt/gcc/gcc/cp/parser.c:29291
0x9df7bc cp_parser_template_declaration_after_parameters
        /mnt/gcc/gcc/cp/parser.c:28954
0x9dff10 cp_parser_explicit_template_declaration
        /mnt/gcc/gcc/cp/parser.c:29220
0x9e2fb9 cp_parser_declaration
        /mnt/gcc/gcc/cp/parser.c:13337
0x9e35ea cp_parser_translation_unit
        /mnt/gcc/gcc/cp/parser.c:4731
0x9e35ea c_parse_file()
        /mnt/gcc/gcc/cp/parser.c:43760
0xaf80ab c_common_parse_file()
        /mnt/gcc/gcc/c-family/c-opts.c:1186

[Bug c++/94153] internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2020-03-12
     Ever confirmed|0                           |1
                 CC|                            |marxin at gcc dot gnu.org
           Keywords|                            |ice-on-invalid-code
             Status|UNCONFIRMED                 |NEW

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Well, it's ICE on invalid code which is very common case.
Was the original file a valid code?

[Bug c++/94153] [8/9/10 Regression] internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|ice-on-invalid-code         |error-recovery
            Summary|internal compiler error: in |[8/9/10 Regression]
                   |cp_lexer_new_from_tokens,   |internal compiler error: in
                   |at cp/parser.c:700          |cp_lexer_new_from_tokens,
                   |                            |at cp/parser.c:700
                 CC|                            |jakub at gcc dot gnu.org
   Target Milestone|---                         |8.5
           Priority|P3                          |P4
   Last reconfirmed|2020-03-12 00:00:00         |

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
ICEs already in r10-7144-gfcc443b97e19d9c8a2d8ccdfa4cc20682165827e or in GCC
3.4, but GCC 3.3 rejected it only instead:
pr94153.C:2: error: syntax error before `{' token

[Bug c++/94153] [8/9/10 Regression] internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[v.barinov at samsung dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

--- Comment #3 from Slava Barinov <v.barinov at samsung dot com> ---
(In reply to Martin Liška from comment #1)
> Well, it's ICE on invalid code which is very common case.
Hm. So no need to report them? 

> Was the original file a valid code?
I've been reducing builtins-string.cc from chromium-81, but due to my mistake
in test for creduce, this bug was found.

Actual bug I wanted to report is being reduced now.

[Bug c++/94153] [8/9/10 Regression] internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Slava Barinov from comment #3)
> (In reply to Martin Liška from comment #1)
> > Well, it's ICE on invalid code which is very common case.
> Hm. So no need to report them? 

Well, we have a bazillion of such error recovery issues for C++.

[Bug c++/94153] [9/10/11/12 Regression] internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|8.5                         |9.4

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 8 branch is being closed.

[Bug c++/94153] [9/10/11/12 Regression] internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

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

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

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9.4 is being released, retargeting bugs to GCC 9.5.

[Bug c++/94153] [9/10/11/12 Regression] internal compiler error: in cp_lexer_new_from_tokens, at cp/parser.c:700

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94153

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Dup of bug 39751.

*** This bug has been marked as a duplicate of bug 39751 ***