[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[gcc at abeckmann dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

Andreas Beckmann <gcc at abeckmann dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |3.3.6, 4.6.0
      Known to fail|4.4.0, 4.5.0                |4.2.4, 4.3.6, 4.4.6, 4.5.2

--- Comment #7 from Andreas Beckmann <gcc at abeckmann dot de> 2010-12-09 00:14:11 UTC ---
I just checked again and this problem seems to be fixed in trunk now.

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

--- Comment #8 from Zdenek Sojka <zsojka at seznam dot cz> 2011-03-21 14:34:14 UTC ---
(In reply to comment #7)
> I just checked again and this problem seems to be fixed in trunk now.

It still crashes for me (with the testcase from comment #0):
$ gcc-4.7.0-pre9999 xxx.C
xxx.C:5:1: error: types may not be defined in template arguments
xxx.C:6:4: error: ISO C++ forbids declaration of ‘f’ with no type
[-fpermissive]
xxx.C:6:6: error: expected ‘}’ at end of input
xxx.C:6:6: error: expected template-argument at end of input
xxx.C:6:6: error: expected ‘>’ at end of input
xxx.C:6:6: error: expected ‘::’ at end of input
xxx.C:6:6: error: expected unqualified-id at end of input
xxx.C:6:6: error: expected ‘;’ at end of input
xxx.C:6:6: error: expected ‘}’ at end of input
xxx.C:6:6: internal compiler error: in cp_lexer_new_from_tokens, at
cp/parser.c:395
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugs.gentoo.org/> for instructions.

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

--- Comment #9 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-09-25 16:08:15 UTC ---
*** Bug 46858 has been marked as a duplicate of this bug. ***

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |haoxintu at gmail dot com

--- Comment #12 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 95927 has been marked as a duplicate of this bug. ***

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |v.barinov at samsung dot com

--- Comment #13 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 94153 has been marked as a duplicate of this bug. ***

[Bug c++/39751] [9/10/11/12 Regression] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |9.5
           Severity|minor                       |trivial
            Summary|ICE in                      |[9/10/11/12 Regression] ICE
                   |cp_lexer_new_from_tokens,   |in
                   |at cp/parser.c:342          |cp_lexer_new_from_tokens,
                   |                            |at cp/parser.c:342

[Bug c++/39751] [9/10/11/12 Regression] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4

[Bug c++/39751] [9/10/11/12 Regression] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[roger at nextmovesoftware dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

Roger Sayle <roger at nextmovesoftware dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |roger at nextmovesoftware dot com
           Assignee|unassigned at gcc dot gnu.org      |roger at nextmovesoftware dot com
             Status|NEW                         |ASSIGNED

--- Comment #14 from Roger Sayle <roger at nextmovesoftware dot com> ---
Patch proposed.
https://gcc.gnu.org/pipermail/gcc-patches/2022-February/590951.html

[Bug c++/39751] [9/10/11/12 Regression] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

--- Comment #15 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Roger Sayle <sayle@gcc.gnu.org>:

https://gcc.gnu.org/g:2185c9734ad977b88c519a4579187a91b3f71edd

commit r12-7573-g2185c9734ad977b88c519a4579187a91b3f71edd
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Thu Mar 10 07:32:06 2022 +0000

    PR c++/39751: ICE-on-invalid parsing regression.

    This is a fix for PR c++/39751 which is an ICE-on-invalid regression in
    the C++ parser after encountering the end of file.  The one line change
    is to check that the tokens cached in DECL_PENDING_INLINE_INFO haven't
    been purged before processing them in cp_parser_late_parsing_for_member.

    2022-03-10  Roger Sayle  <roger@nextmovesoftware.com>

    gcc/cp/ChangeLog
            PR c++/39751
            * parser.cc (cp_parser_late_parsing_for_member): Confirm the token
            stream hasn't been purged before processing DECL_PENDING_INLINE.

    gcc/testsuite/ChangeLog
            PR c++/39751
            * g++.dg/parse/pr39751.C: New test case.

[Bug c++/39751] [9/10/11/12 Regression] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[roger at nextmovesoftware dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

Roger Sayle <roger at nextmovesoftware dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
   Target Milestone|9.5                         |12.0
         Resolution|---                         |FIXED

--- Comment #16 from Roger Sayle <roger at nextmovesoftware dot com> ---
This should now be fixed on mainline.

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[zsojka at seznam dot cz]

------- Comment #6 from zsojka at seznam dot cz  2010-03-03 23:45 -------
It could be regression from 3.3.6.
3.4.6, 4.1.2, 4.2.4, 4.3.4, 4.4.3 built without checking all bail out, while
3.3.6 ends with:
$ g++-3.3.6 xxx.cc
xxx.cc:6: error: ISO C++ forbids declaration of `f' with no type
xxx.cc:6: error: end of file read inside definition
xxx.cc:6: error: syntax error at end of input


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[paolo dot carlini at oracle dot com]

------- Comment #5 from paolo dot carlini at oracle dot com  2009-04-13 15:12 -------
HJ, you are wrong, make sure to pass --enable-checking explicitly in
4_4-branch.


-- 

paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-04-13 15:12:32
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[paolo dot carlini at oracle dot com]

------- Comment #4 from paolo dot carlini at oracle dot com  2009-04-13 15:10 -------
Indeed, I just checked and 4.4.0 also ICEs when checking is enabled, thus
behaves exactly like 4.5.0.


-- 

paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|4.5.0                       |4.4.0 4.5.0
      Known to work|4.4.0                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[pinskia at gmail dot com]

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------- Comment #3 from pinskia at gmail dot com  2009-04-13 15:06 -------
Subject: Re:   New: ICE in cp_lexer_new_from_tokens, at cp/parser.c:342



Sent from my iPhone

On Apr 13, 2009, at 7:43 AM, "gcc at abeckmann dot de"
<gcc-bugzilla@gcc.gnu.org 
 > wrote:

> This is a 4.5.0 regression on invalid code:
>
> ========== 8< ==========
> template < typename >
> struct A
> {
> A < struct
> {
> f () :
> ========== >8 ==========
>
> ---------- 4.5.0 ----------
> $ x86_64-linux-gnu-g++-trunk -v -c ice-cp_parser_c-342.ii
>
> Using built-in specs.
> Target: x86_64-unknown-linux-gnu
> Configured with: ../gcc-trunk/configure
> --prefix=/opt/software/gcc-x86_64/gcc-trunk --program-suffix=-trunk
> --enable-languages=c,c++
> Thread model: posix
> gcc version 4.5.0 20090410 (experimental) (GCC)
> COLLECT_GCC_OPTIONS='-v' '-c' '-shared-libgcc' '-mtune=generic'
>
> /opt/software/gcc-x86_64/gcc-trunk/libexec/gcc/x86_64-unknown-linux- 
> gnu/4.5.0/cc1plus
> -fpreprocessed ice-cp_parser_c-342.ii -quiet -dumpbase ice- 
> cp_parser_c-342.ii
> -mtune=generic -auxbase ice-cp_parser_c-342 -version -o /tmp/ 
> ccqQZWYs.s
> GNU C++ (GCC) version 4.5.0 20090412 (experimental) (x86_64-unknown- 
> linux-gnu)
>        compiled by GNU C version 4.5.0 20090410 (experimental), GMP  
> version
> 4.2.2, MPFR version 2.3.1.
> GGC heuristics: --param ggc-min-expand=30 --param ggc-min- 
> heapsize=4096
> Compiler executable checksum: b13346d60276f3352c4b7dd22e3889d7
> ice-cp_parser_c-342.ii:6: error: ISO C++ forbids declaration of  
> ‘f’ with no
> type
> ice-cp_parser_c-342.ii:6: error: expected ‘}’ at end of input
> ice-cp_parser_c-342.ii:6: error: expected template-argument at end  
> of input
> ice-cp_parser_c-342.ii:6: error: expected ‘>’ at end of input
> ice-cp_parser_c-342.ii:6: error: expected ‘::’ at end of input
> ice-cp_parser_c-342.ii:6: error: expected unqualified-id at end of  
> input
> ice-cp_parser_c-342.ii:6: error: expected ‘;’ at end of input
> ice-cp_parser_c-342.ii:6: error: expected ‘}’ at end of input
> ice-cp_parser_c-342.ii:6: internal compiler error: in  
> cp_lexer_new_from_tokens,
> at cp/parser.c:342
> --------------------
>
> using 4.4.0 or older the compilation terminates with
>
> ice-cp_parser_c-342.ii:6: confused by earlier errors, bailing out

Then this is not a regression :). That message is the same as an ice  
but just for releases;).

>
>
>
> -- 
>           Summary: ICE in cp_lexer_new_from_tokens, at cp/parser.c:342
>           Product: gcc
>           Version: 4.5.0
>            Status: UNCONFIRMED
>          Severity: normal
>          Priority: P3
>         Component: c++
>        AssignedTo: unassigned at gcc dot gnu dot org
>        ReportedBy: gcc at abeckmann dot de
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751
>


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[hjl dot tools at gmail dot com]

------- Comment #2 from hjl dot tools at gmail dot com  2009-04-13 15:04 -------
(In reply to comment #1)
> Are you *sure* this is a regression? Did you compare to 4.5.0 a 4.4.0 built
> with checking *enabled*?
> 

FWIW, gcc 4.4.0 doesn't ICE when checking isn't disabled. But this testcase
has been failing since gcc 4.3.0.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751

[Bug c++/39751] ICE in cp_lexer_new_from_tokens, at cp/parser.c:342

[paolo dot carlini at oracle dot com]

------- Comment #1 from paolo dot carlini at oracle dot com  2009-04-13 14:47 -------
Are you *sure* this is a regression? Did you compare to 4.5.0 a 4.4.0 built
with checking *enabled*?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39751