Re: Bootstrap broken on ppc-darwin

[Andrew Pinski <pinskia at physics dot uc dot edu>]

On Jul 16, 2006, at 5:19 PM, Andrew Pinski wrote:

> And here is a reduced testcase:
> struct basic_ios
> {
>   virtual ~basic_ios() { }
> };
> class istrstream
> : virtual public basic_ios
> {
>   virtual ~istrstream();
> };
> istrstream::~istrstream() { }

Debugging shows this was definitely caused by the stabs changes:

Breakpoint 5, dbxout_begin_prologue (lineno=7, filename=0xbffffb4b  
"t.cc") at ../../gcc/dbxout.c:1246
1246      if (use_gnu_debug_info_extensions
(gdb) p scope_labelno
$2 = 1
(gdb) continue
Continuing.

Breakpoint 5, dbxout_begin_prologue (lineno=10, filename=0xbffffb4b  
"t.cc") at ../../gcc/dbxout.c:1246
1246      if (use_gnu_debug_info_extensions
(gdb) p scope_labelno
$3 = 1


Here we have the same scope_labelno.  The first dbxout_begin_prologue  
comes from calling rs6000_output_mi_thunk.  The normal way  
scope_labelno gets incremented is via the
call to debug_hooks->function_decl in rest_of_handle_final which is  
not done for thunks.
I don't know if we should call debug_hooks->function_decl for thunks  
or not.

Thanks,
Andrew Pinski