[Bug c++/34104] New: auto_ptr error catching

[Bug c++/34104] New: auto_ptr error catching

[dckorah+gcc at gmail dot com]

#include <memory>
int main(int argc, char* argv[])
{
    int* intptr;
    std::auto_ptr<int> i;

    i = std::auto_ptr<int> (intptr);

    return 0;
}

--------- code above compiles but fails run ------------

~/tests$ g++ -Wall auto_ptr.cpp
~/tests$ ./a.out
*** glibc detected *** ./a.out: munmap_chunk(): invalid pointer: 0x080485a9 ***
======= Backtrace: =========
/lib/tls/i686/cmov/libc.so.6(cfree+0x1bb)[0xb7d2792b]
/usr/lib/libstdc++.so.6(_ZdlPv+0x21)[0xb7eecd81]
./a.out[0x804857d]
./a.out[0x80484b3]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe0)[0xb7cd0050]
./a.out[0x80483d1]
======= Memory map: ========
08048000-08049000 r-xp 00000000 08:03 6389816    /home/dkorah/tests/a.out
08049000-0804a000 rw-p 00000000 08:03 6389816    /home/dkorah/tests/a.out
0804a000-0806b000 rw-p 0804a000 00:00 0          [heap]
b7cb9000-b7cba000 rw-p b7cb9000 00:00 0
b7cba000-b7dfe000 r-xp 00000000 08:01 32593     
/lib/tls/i686/cmov/libc-2.6.1.so
b7dfe000-b7dff000 r--p 00143000 08:01 32593     
/lib/tls/i686/cmov/libc-2.6.1.so
b7dff000-b7e01000 rw-p 00144000 08:01 32593     
/lib/tls/i686/cmov/libc-2.6.1.so
b7e01000-b7e04000 rw-p b7e01000 00:00 0
b7e04000-b7e0e000 r-xp 00000000 08:01 2394403    /lib/libgcc_s.so.1
b7e0e000-b7e0f000 rw-p 0000a000 08:01 2394403    /lib/libgcc_s.so.1
b7e0f000-b7e10000 rw-p b7e0f000 00:00 0
b7e10000-b7e33000 r-xp 00000000 08:01 32597     
/lib/tls/i686/cmov/libm-2.6.1.so
b7e33000-b7e35000 rw-p 00023000 08:01 32597     
/lib/tls/i686/cmov/libm-2.6.1.so
b7e35000-b7f1d000 r-xp 00000000 08:01 1337854    /usr/lib/libstdc++.so.6.0.9
b7f1d000-b7f20000 r--p 000e8000 08:01 1337854    /usr/lib/libstdc++.so.6.0.9
b7f20000-b7f22000 rw-p 000eb000 08:01 1337854    /usr/lib/libstdc++.so.6.0.9
b7f22000-b7f28000 rw-p b7f22000 00:00 0
b7f3c000-b7f3e000 rw-p b7f3c000 00:00 0
b7f3e000-b7f58000 r-xp 00000000 08:01 2394896    /lib/ld-2.6.1.so
b7f58000-b7f5a000 rw-p 00019000 08:01 2394896    /lib/ld-2.6.1.so
bf9f2000-bfa07000 rw-p bf9f2000 00:00 0          [stack]
ffffe000-fffff000 r-xp 00000000 00:00 0          [vdso]
Aborted (core dumped)


-- 
           Summary: auto_ptr error catching
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dckorah+gcc at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34104

[Bug c++/34104] auto_ptr error catching

[pcarlini at suse dot de]

------- Comment #1 from pcarlini at suse dot de  2007-11-15 13:32 -------
intptr is not initialized: when i is destructed it calls delete on the owned
pointer, that is intptr, and anything can happen. Just initialize intptr to
zero or to a value returned by new.


-- 

pcarlini at suse dot de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34104