[Bug c++/12383] New: error printing elements in vector from C++ program

[Bug c++/12383] New: error printing elements in vector from C++ program

[lberk at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12383

           Summary: error printing elements in vector from C++ program
           Product: gdb
           Version: 7.1
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@sourceware.org
        ReportedBy: lberk@redhat.com
                CC: swagiaal@redhat.com


Using GDB (7.1-34.fc13) in Fedora 13 x86-64 
gdb was configured as "x86_64-redhat-linux-gnu" 
gcc version 4.4.5 20101112 (Red Hat 4.4.5-2) (GCC)

While debugging a program written in c++ I was attempting to print the elements
of a std::vector using p MyVector[x] and was unable to (where x <
MyVector.size() , in my specific case; 2).  The error: 'No symbol "operator[]"
in current context.' was received. If I use p MyVector._M_impl._M_start I can
access and print the first element of the std vector as needed however
accessing the rest of the vector would be desirable.

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[Bug c++/12383] error printing elements in vector from C++ program

[keiths at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12383

Keith Seitz <keiths at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |keiths at redhat dot com

--- Comment #1 from Keith Seitz <keiths at redhat dot com> 2011-02-17 21:46:31 UTC ---
The problem here is that the user's program does not use
std::vector::operator[], so the compiler omits it.

Unfortunately, in order to use operator[] at the command prompt, your program
*must* include it. Or more specifically, the compiler/linker must include it.

If you add a call to operator[] in your program, everything should just
"magically" work (at least it does for me):

(gdb) p myvector[0]
$1 = (int &) @0x603010: 0

Various ideas are floating around on how to further address this issue, but
nothing definitive has been decided yet.

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[Bug c++/12383] error printing elements in vector from C++ program

[tromey at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12383

Tom Tromey <tromey at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |tromey at redhat dot com
         Resolution|                            |DUPLICATE

--- Comment #2 from Tom Tromey <tromey at redhat dot com> 2011-11-10 19:50:53 UTC ---
Marking this one as a dup since the other has more info.

*** This bug has been marked as a duplicate of bug 12937 ***

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