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Re: c++ debugging hosed
- From: Benjamin Kosnik <bkoz at redhat dot com>
- To: Jason Merrill <jason at redhat dot com>
- Cc: libstdc++ at gcc dot gnu dot org, gdb at sources dot redhat dot com
- Date: Wed, 14 Nov 2001 12:15:51 -0800 (PST)
- Subject: Re: c++ debugging hosed
Hey. Thanks for the hack.
> I just updated my gdb for the first time in months and ran into the same
> problem. Looks like the V3 ABI support code isn't ready for prime time.
> Until it is, you can disable it with this patch:
Yay. I disabled it.
#include <sstream>
void test01()
{
std::ostringstream oss; // break here
}
I'm still having some difficulty, however. In the above,
(gdb) p oss
$1 = {<basic_ostream<char,std::char_traits<char> >> =
{<basic_ios<char,std::char_traits<char> >> = <invalid address>,
_vptr.basic_ostream<char,std::char_traits<char> > = 0x80faa4c},
_M_stringbuf = {<basic_streambuf<char,std::char_traits<char> >> = {
_vptr.basic_streambuf<char,std::char_traits<char> > = 0x80faa88,
_M_buf = 0x811955c "", _M_buf_size = 0, _M_buf_size_opt = 512,
_M_buf_unified = false, _M_in_beg = 0x0, _M_in_cur = 0x0,
_M_in_end = 0x0, _M_out_beg = 0x811955c "", _M_out_cur = 0x811955c
"",
_M_out_end = 0x811955c "", _M_mode = 16, _M_buf_locale = {static
none = Internal: global symbol `_ZNSt6locale4noneE' found in
/mnt/hd/src/src.gcc/libstdc++-v3/src/locale.cc psymtab but not in symtab.
_ZNSt6locale4noneE may be an inlined function, or may be a template function
(if a template, try specifying an instantiation: _ZNSt6locale4noneE<type>).
(gdb) p oss._M_streambuf
virtual baseclass botch
I haven't tried this with a dwarf2 toolchain yet, I will in a bit.
Is there a last known good date for gdb so that I can revert my sources
until this is fixed?
thanks,
benjamin