[Bug c++/31260] New: ICE: segmentation fault on invalid code

[Bug c++/31260] New: ICE: segmentation fault on invalid code

[wouter dot vermaelen at pi dot be]

Using SVN revision 123051

> cat bug.ii
template<class T1> struct S1 {
template<bool T2> struct S2;
template<template<bool> class T3> struct S3 {
template<typename T4 = S3<S2> > struct S4 {};
struct S5 : S4<> {

> g++ bug.ii
bug-segv.ii:5: internal compiler error: Segmentation fault


-- 
           Summary: ICE: segmentation fault on invalid code
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: wouter dot vermaelen at pi dot be


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.1/4.2/4.3 Regression] ICE: segmentation fault with template code

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2007-03-19 09:26 -------
It seems like this can be made into valid code and still ICE.
The valid code is:
template<class T1> struct S1 {
template<bool T2> struct S2;
template<template<bool> class T3> struct S3 {
template<typename T4=S3<S2> > struct S4 {};
struct S5 : S4<>  {
};
};
};


-----
Note if I change how S5 is declared using a specific template argument instead
of <>, the crash goes away in that the follow compiles just fine:
template<class T1> struct S1 {
template<bool T2> struct S2;
template<template<bool> class T3> struct S3 {
template<typename T4=S3<S2> > struct S4 {};
struct S5 : S4<S3<S2> >   {
};
};
};


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-invalid-code, ice-on-
                   |                            |valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2007-03-19 09:26:55
               date|                            |
            Summary|ICE: segmentation fault on  |[4.1/4.2/4.3 Regression]
                   |invalid code                |ICE: segmentation fault with
                   |                            |template code
   Target Milestone|---                         |4.1.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.1/4.2/4.3 Regression] ICE: segmentation fault with template code

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.1/4.2/4.3 Regression] ICE: segmentation fault with template code

[reichelt at gcc dot gnu dot org]

------- Comment #2 from reichelt at gcc dot gnu dot org  2007-04-08 23:15 -------
Btw, the bug appeared in GCC 4.0.2.
The code compiles with GCC 4.0.1 or earlier.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reichelt at gcc dot gnu dot
                   |                            |org
           Keywords|                            |monitored
      Known to fail|                            |4.0.2 4.0.4 4.1.0 4.1.2
                   |                            |4.2.0 4.3.0
      Known to work|                            |3.3.6 3.4.0 3.4.6 4.0.0
                   |                            |4.0.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.1/4.2/4.3 Regression] ICE: segmentation fault with template code

[reichelt at gcc dot gnu dot org]

------- Comment #3 from reichelt at gcc dot gnu dot org  2007-04-09 00:38 -------
Mark, this appeared with your patch for PR 23789:

2005-09-12  Mark Mitchell  <mark@codesourcery.com>

        PR c++/23789
        * cvt.c (perform_qualification_conversions): Don't create
        unnecessary NOP_EXPRs.
        * pt.c (tsubst_template_arg): Use fold_non_dependent_expr.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at codesourcery dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.1/4.2/4.3 Regression] ICE: segmentation fault with template code

[pcarlini at suse dot de]

------- Comment #4 from pcarlini at suse dot de  2007-09-20 10:21 -------
On it.


-- 

pcarlini at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pcarlini at suse dot de
                   |dot org                     |
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.1/4.2/4.3 Regression] ICE: segmentation fault with template code

[pcarlini at suse dot de]

------- Comment #5 from pcarlini at suse dot de  2007-12-01 13:54 -------
Unassigning, likely other can fix it much easily than me


-- 

pcarlini at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|pcarlini at suse dot de     |unassigned at gcc dot gnu
                   |                            |dot org
             Status|ASSIGNED                    |NEW


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.2/4.3/4.4 Regression] ICE: segmentation fault with template code

[jsm28 at gcc dot gnu dot org]

------- Comment #6 from jsm28 at gcc dot gnu dot org  2008-07-04 22:00 -------
Closing 4.1 branch.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.1/4.2/4.3/4.4 Regression]|[4.2/4.3/4.4 Regression]
                   |ICE: segmentation fault with|ICE: segmentation fault with
                   |template code               |template code
   Target Milestone|4.1.3                       |4.2.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.2/4.3 Regression] ICE: segmentation fault with template code

[reichelt at gcc dot gnu dot org]

------- Comment #7 from reichelt at gcc dot gnu dot org  2009-01-16 21:43 -------
Fixed on the trunk by Steve Ellcey's patch for PR38357.

Steve, would you mind backporting the patch to the 4.3 branch as it fixes an
ice-on-valid-code regression there?


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sje at cup dot hp dot com
            Summary|[4.2/4.3/4.4 Regression]    |[4.2/4.3 Regression] ICE:
                   |ICE: segmentation fault with|segmentation fault with
                   |template code               |template code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.2/4.3 Regression] ICE: segmentation fault with template code

[sje at gcc dot gnu dot org]

------- Comment #8 from sje at gcc dot gnu dot org  2009-01-16 22:35 -------
Subject: Bug 31260

Author: sje
Date: Fri Jan 16 22:35:24 2009
New Revision: 143444

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143444
Log:
        PR c++/31260
        PR c++/38357
        * pt.c (tsubst): Check for NULL args.
        * g++.dg/template/crash87.C: New test.


Added:
    branches/gcc-4_3-branch/gcc/testsuite/g++.dg/template/crash87.C
Modified:
    branches/gcc-4_3-branch/gcc/cp/ChangeLog
    branches/gcc-4_3-branch/gcc/cp/pt.c
    branches/gcc-4_3-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.2 Regression] ICE: segmentation fault with template code

[reichelt at gcc dot gnu dot org]

------- Comment #9 from reichelt at gcc dot gnu dot org  2009-01-18 11:47 -------
Fixed on the 4.3 branch.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|4.0.2 4.0.4 4.1.0 4.1.2     |4.0.2 4.0.4 4.1.0 4.1.2
                   |4.2.0 4.3.0                 |4.2.0 4.3.0 4.3.2
      Known to work|3.3.6 3.4.0 3.4.6 4.0.0     |3.3.6 3.4.0 3.4.6 4.0.0
                   |4.0.1                       |4.0.1 4.3.3
            Summary|[4.2/4.3 Regression] ICE:   |[4.2 Regression] ICE:
                   |segmentation fault with     |segmentation fault with
                   |template code               |template code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260

[Bug c++/31260] [4.2 Regression] ICE: segmentation fault with template code

[jsm28 at gcc dot gnu dot org]

------- Comment #10 from jsm28 at gcc dot gnu dot org  2009-03-30 21:43 -------
Closing 4.2 branch, fixed in 4.3.3 and 4.4.0.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
      Known to fail|4.0.2 4.0.4 4.1.0 4.1.2     |4.0.2 4.0.4 4.1.0 4.1.2
                   |4.2.0 4.3.0 4.3.2           |4.2.0 4.3.0 4.3.2 4.2.5
      Known to work|3.3.6 3.4.0 3.4.6 4.0.0     |3.3.6 3.4.0 3.4.6 4.0.0
                   |4.0.1 4.3.3                 |4.0.1 4.3.3 4.4.0
         Resolution|                            |FIXED
   Target Milestone|4.2.5                       |4.3.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31260