[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44827

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|gcc-bugs at gcc dot gnu.org |
         Resolution|                            |FIXED

--- Comment #7 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-10-02 10:15:28 UTC ---
Fixed in 4.6.x.

[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[davek at gcc dot gnu dot org]

------- Comment #6 from davek at gcc dot gnu dot org  2010-07-11 12:56 -------
(In reply to comment #5)
> Program received signal SIGSEGV, Segmentation fault.
> 0x00000000006f25bd in lvalue_p_1 (ref=0x7ffff0c4fb98) at
> ../../gcc-4.x/gcc/cp/tree.c:71
> 71        if (TREE_CODE (TREE_TYPE (ref)) == REFERENCE_TYPE)
> 

  I don't even know what a one of these is:

(gdb) call debug_tree (ref)
 <baselink 0x7fbc4880
    type <lang_type 0x7ff7e580 unknown type type <lang_type 0x7ff7e580 unknown
type>
        VOID
        align 1 symtab 0 alias set -1 canonical type 0x7ff7e580
        pointer_to_this <lang_type 0x7ff7e580 unknown type> reference_to_this
<lang_type 0x7ff7e580 unknown type>>

    functions <template_id_expr 0x7fbc48a0
        arg 0 <overload 0x7fb540c8 type <lang_type 0x7ff7e580 unknown type>
            function <template_decl 0x7fb43e20 delete_disposer>>
        arg 1 <tree_vec 0x7fb54968 elt 0 <record_type 0x7fd148c0 A>>>
    binfo <tree_binfo 0x7fc973f0
        type <record_type 0x7fd1b1c0 data_holder addressable needs-constructing
type_4 type_5 type_6 BLK
            size <integer_cst 0x7fef09c0 constant 96>
            unit size <integer_cst 0x7fef09d8 constant 12>
            align 32 symtab 0 alias set -1 canonical type 0x7fd1b1c0 fields
<field_decl 0x7fb36ea0 a>
            full-name "struct data_holder"
            needs-constructor needs-destructor X() X(constX&) this=(X&)
n_parents=0 use_template=0 interface-unknown
            pointer_to_this <pointer_type 0x7fb37380> chain <type_decl
0x7fcecef0 data_holder>>
        private> access_binfo <tree_binfo 0x7fc973f0>>
(gdb)

  This needs a C++ FE maintainer to take a look.


-- 

davek at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2010-07-05 23:26:24         |2010-07-11 12:56:24
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44827

[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[redi at gcc dot gnu dot org]

------- Comment #5 from redi at gcc dot gnu dot org  2010-07-06 23:08 -------
Program received signal SIGSEGV, Segmentation fault.
0x00000000006f25bd in lvalue_p_1 (ref=0x7ffff0c4fb98) at
../../gcc-4.x/gcc/cp/tree.c:71
71        if (TREE_CODE (TREE_TYPE (ref)) == REFERENCE_TYPE)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44827

[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[chtz at informatik dot uni-bremen dot de]

------- Comment #4 from chtz at informatik dot uni-bremen dot de  2010-07-06 22:06 -------
I found two possible work-arounds:

either replace:
>  template<class X>
>  void remove(D<X>* t){
>   A_list::iterator it = A_list::s_iterator_to(*t);
>   a.erase_and_dispose(it, delete_disposer<A>);
>  }

by:
        template<class X>
        void remove(D<X>* t){
                A_list::iterator it = A_list::s_iterator_to(*t), it2 = it;
                ++it2;
                a.erase_and_dispose(it, it2, delete_disposer<A>);
        }

Or, what also works, is replacing delete_disposer<A> by a non-template version:
        void delete_A(A* a){ delete a; }


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44827

[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[redi at gcc dot gnu dot org]

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------- Comment #3 from redi at gcc dot gnu dot org  2010-07-05 23:28 -------
ICE is always at the same place

b.cc: In member function ‘void data_holder::remove(D<X>*) [with X = int]’:
b.cc:45:15:   instantiated from here
b.cc:35:3: internal compiler error: Segmentation fault


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44827

[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[redi at gcc dot gnu dot org]

------- Comment #2 from redi at gcc dot gnu dot org  2010-07-05 23:26 -------
unpreprocessed source (because preprocessed boost source is so dependent on
compiler version it often won't compile with other versions)

#include <boost/intrusive/list.hpp>

struct A : public boost::intrusive::list_base_hook<> {
 virtual ~A() {}

};

template<class X>
struct D : A {
 X x;
 D(const X& x) : x(x) {}
};

typedef boost::intrusive::list<A> A_list;


struct data_holder {
 A_list a;

 template<class C>
 static void delete_disposer(C* c){
  delete c;
 }

 template<class X>
 D<X>* insert(const X& x){
  D<X> *t = new D<X>(x);
  a.push_back(*t);
  return t;
 }

 template<class X>
 void remove(D<X>* t){
  A_list::iterator it = A_list::s_iterator_to(*t);
  a.erase_and_dispose(it, delete_disposer<A>);
 }

};

int main() {

 data_holder data;

 D<int> *i = data.insert(10);
 data.remove(i);

 return 0;
}

This ICEs with Boost 1.39 or current Boost trunk, using any of 4.5.1, 4.6.0 or
Fedora 4.4.3


-- 

redi at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
      Known to fail|                            |4.4.4 4.5.1 4.6.0
   Last reconfirmed|0000-00-00 00:00:00         |2010-07-05 23:26:24
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44827

[Bug c++/44827] g++4.3.4 segfaults when using boost::intrusive::list

[chtz at informatik dot uni-bremen dot de]

------- Comment #1 from chtz at informatik dot uni-bremen dot de  2010-07-05 22:28 -------
Created an attachment (id=21096)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21096&action=view)
generated by g++ -v -save-temps -c minimal.cc


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44827