Re: gcc and -fPIC

[Gerhard Wiesinger <lists at wiesinger dot com>]

On Sun, 17 Oct 2004, Daniel Jacobowitz wrote:

> On Sun, Oct 17, 2004 at 08:57:15PM +0200, Gerhard Wiesinger wrote:
> >         delete x;
> >  8048578:       83 ec 0c                sub    $0xc,%esp
> >  804857b:       ff 75 f4                pushl  0xfffffff4(%ebp)
> >  804857e:       e8 4d fe ff ff          call   80483d0 <_ZdlPv@plt>
> >  8048583:       83 c4 10                add    $0x10,%esp
> >         delete [] xarray;
> >  8048586:       83 7d f0 00             cmpl   $0x0,0xfffffff0(%ebp)
> >  804858a:       74 0e                   je     804859a <main+0xba>
> >  804858c:       83 ec 0c                sub    $0xc,%esp
> >  804858f:       ff 75 f0                pushl  0xfffffff0(%ebp)
> >  8048592:       e8 79 fe ff ff          call   8048410 <_ZdaPv@plt>
> >  8048597:       83 c4 10                add    $0x10,%esp
> > }
> >
> >
> > I got some symbol output, but not the expected one.
> >
> > But it shouldn't be to difficult to implement because the DYNAMIC SYMBOL
> > table above has already the correct symbol.
>
> That's the output I would expect.  If you would rather see the longer
> form, pipe the output to c++filt.

OK, piping through c++filt works well. As I specified the -C switch 
(demangle C++) I would expect that this is demangled too.

But it looks pretty well now :-)

A diff looks like (wthout and with c++filt):
-080483c0 <_ZdlPv@plt-0x10>:
+080483c0 <operator delete(void*)@plt-0x10>:
  80483c0:      ff 35 24 98 04 08       pushl  0x8049824
  80483c6:      ff 25 28 98 04 08       jmp    *0x8049828
  80483cc:      00 00                   add    %al,(%eax)

         delete x;
  8048578:      83 ec 0c                sub    $0xc,%esp
  804857b:      ff 75 f4                pushl  0xfffffff4(%ebp)
- 804857e:      e8 4d fe ff ff          call   80483d0 <_ZdlPv@plt>
+ 804857e:      e8 4d fe ff ff          call   80483d0 <operator delete(void*)@plt>
  8048583:      83 c4 10                add    $0x10,%esp

Ciao,
Gerhard