[Bug gdb/11639] New: Base class type information not accessible in binaries compiled with g++ 4.5.0

[Bug gdb/11639] New: Base class type information not accessible in binaries compiled with g++ 4.5.0

[andre dot poenitz at nokia dot com]

This is the "second issue" in
http://sourceware.org/bugzilla/show_bug.cgi?id=10953 but as it seems unrelated I
put it as a separate issue here:

If 'Derived' and 'Base' are setup as in #10953, and there is an additional
function 'Derived::foo()' with the following implementation 

void Derived::foo()
{
    Base *b = this;
    Base &br = *b;
}

then

 'print b'

yields  "$1 = (void *) 0xbfffee38", i.e. the type information for 'b' is
completely lost.

It should print (Base *) 0xbfffee38. 

The problem is not present in g++ 4.4.

-- 
           Summary: Base class type information not accessible in binaries
                    compiled with g++ 4.5.0
           Product: gdb
           Version: 7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned at sourceware dot org
        ReportedBy: andre dot poenitz at nokia dot com
                CC: gdb-prs at sourceware dot org
 GCC build triplet: i486-linux-gnu
  GCC host triplet: i486-linux-gnu
GCC target triplet: i486-linux-gnu


http://sourceware.org/bugzilla/show_bug.cgi?id=11639

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[Bug gdb/11639] Base class type information not accessible in binaries compiled with g++ 4.5.0

[andre dot poenitz at nokia dot com]

------- Additional Comments From andre dot poenitz at nokia dot com  2010-05-26 15:15 -------
Created an attachment (id=4820)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=4820&action=view)
Test case


-- 


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[Bug gdb/11639] Base class type information not accessible in binaries compiled with g++ 4.5.0

[tromey at redhat dot com]

------- Additional Comments From tromey at redhat dot com  2010-08-18 20:19 -------
This seems to be a bug specific to GCC 4.5.
My 4.5 build from GCC svn shows the problem.
However, neither the F13 system compiler (which is 4.4-based)
nor GCC svn trunk showed the problem.
In any case, this doesn't seem to be a gdb bug, so I am closing this.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at redhat dot com
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


http://sourceware.org/bugzilla/show_bug.cgi?id=11639

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[Bug gdb/11639] Base class type information not accessible in binaries compiled with g++ 4.5.0

[andre dot poenitz at nokia dot com]

------- Additional Comments From andre dot poenitz at nokia dot com  2010-08-19 06:59 -------
(In reply to comment #2)
> This seems to be a bug specific to GCC 4.5.
> My 4.5 build from GCC svn shows the problem.

Thanks for the investigation. I opened a new issue on the gcc bug tracker now:

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45334

-- 


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