[Bug c++/26558] New: segfault on syntax error

[Bug c++/26558] New: segfault on syntax error

[debian-gcc at lists dot debian dot org]

[forwarded from http://bugs.debian.org/349087]

g++ (GCC) 4.0.3 20060212 (prerelease) (Debian 4.0.2-9)

falk@gluck:~% cat main.cpp 
template <typename T> class C {
        template <int NO> int fun() { return NO;}
        template <int NO> int fun2() {
                return 0 << fun<NO>::; //bad code of course here :)
        }
};
falk@gluck:~% g++ -c main.cpp 
main.cpp: In member function 'int C<T>::fun2()':
main.cpp:4: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Does not occur on alpha-linux-gnu, or with 3.3.6.


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           Summary: segfault on syntax error
           Product: gcc
           Version: 4.0.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: debian-gcc at lists dot debian dot org
 GCC build triplet: i486-linux-gnu
  GCC host triplet: i486-linux-gnu
GCC target triplet: i486-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] segfault on syntax error

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-03-04 15:55 -------
Hmm, works with 4.1.0 20060208 on x86_64.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] segfault on syntax error

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-03-04 15:55 -------
And "4.0.3 20051105" on x86_64.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] segfault on syntax error

[pinskia at gcc dot gnu dot org]

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------- Comment #3 from pinskia at gcc dot gnu dot org  2006-03-04 15:56 -------
But not with "4.2.0 20060304" on x86_64:
t.cc: In member function ‘int C<T>::fun2()’:
t.cc:4: internal compiler error: tree check: expected class ‘type’, have
‘exceptional’ (error_mark) in cp_parser_class_name, at cp/parser.c:12746
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


Must had been a change between there and today that caused it.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [3.4/4.0/4.1/4.2 Regression] segfault on syntax error

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2006-03-04 16:01 -------
Actually it fails with checking since 3.4.0 so confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-checking
      Known to fail|4.2.0                       |4.2.0 4.0.0 4.1.0 3.4.0
      Known to work|4.0.2                       |
   Last reconfirmed|0000-00-00 00:00:00         |2006-03-04 16:01:24
               date|                            |
            Summary|[4.2 Regression] segfault on|[3.4/4.0/4.1/4.2 Regression]
                   |syntax error                |segfault on syntax error
   Target Milestone|---                         |4.0.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [3.4/4.0/4.1/4.2 Regression] segfault on syntax error

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.3                       |4.0.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [4.0/4.1/4.2 Regression] segfault on syntax error

[reichelt at gcc dot gnu dot org]

------- Comment #5 from reichelt at gcc dot gnu dot org  2006-04-19 13:25 -------
Testing a patch.


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reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |reichelt at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [4.0/4.1/4.2 Regression] segfault on syntax error

[patchapp at dberlin dot org]

------- Comment #6 from patchapp at dberlin dot org  2006-04-19 21:35 -------
Subject: Bug number PR c++/26558

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-04/msg00725.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [4.0/4.1/4.2 Regression] segfault on syntax error

[reichelt at gcc dot gnu dot org]

------- Comment #7 from reichelt at gcc dot gnu dot org  2006-04-19 22:03 -------
Subject: Bug 26558

Author: reichelt
Date: Wed Apr 19 22:03:24 2006
New Revision: 113096

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113096
Log:
        PR c++/26558
        * parser.c (cp_parser_class_name): Check for invalid typenames.
        Rearrange code.

        * g++.dg/parse/template19.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/parse/template19.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/parser.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [4.0/4.1/4.2 Regression] segfault on syntax error

[reichelt at gcc dot gnu dot org]

------- Comment #8 from reichelt at gcc dot gnu dot org  2006-04-19 22:07 -------
Subject: Bug 26558

Author: reichelt
Date: Wed Apr 19 22:07:25 2006
New Revision: 113097

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113097
Log:
        PR c++/26558
        * parser.c (cp_parser_class_name): Check for invalid typenames.
        Rearrange code.

        * g++.dg/parse/template19.C: New test.

Added:
    branches/gcc-4_1-branch/gcc/testsuite/g++.dg/parse/template19.C
Modified:
    branches/gcc-4_1-branch/gcc/cp/ChangeLog
    branches/gcc-4_1-branch/gcc/cp/parser.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [4.0/4.1/4.2 Regression] segfault on syntax error

[reichelt at gcc dot gnu dot org]

------- Comment #9 from reichelt at gcc dot gnu dot org  2006-04-19 22:10 -------
Subject: Bug 26558

Author: reichelt
Date: Wed Apr 19 22:10:10 2006
New Revision: 113098

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113098
Log:
        PR c++/26558
        * parser.c (cp_parser_class_name): Check for invalid typenames.
        Rearrange code.

        * g++.dg/parse/template19.C: New test.

Added:
    branches/gcc-4_0-branch/gcc/testsuite/g++.dg/parse/template19.C
Modified:
    branches/gcc-4_0-branch/gcc/cp/ChangeLog
    branches/gcc-4_0-branch/gcc/cp/parser.c
    branches/gcc-4_0-branch/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558

[Bug c++/26558] [4.0/4.1/4.2 Regression] segfault on syntax error

[reichelt at gcc dot gnu dot org]

------- Comment #10 from reichelt at gcc dot gnu dot org  2006-04-19 22:12 -------
Fixed on mainline, 4.1 branch, and 4.0 branch.


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reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26558