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Re: So what is wrong with v3 C++
- To: dan at cgsoftware dot com, gdb at sources dot redhat dot com
- Subject: Re: So what is wrong with v3 C++
- From: Michael Elizabeth Chastain <chastain at cygnus dot com>
- Date: Thu, 28 Jun 2001 22:51:58 -0700
Yeah, here's a typescript of the whole megillah.
MichaelC
===
Script started on Thu Jun 28 22:44:46 2001
[chastain@snapon tmp]$ echo $PATH
/horton/chastain/fsf/2001-06-23/snapon/native/install/bin:/bin:/usr/bin
[chastain@snapon tmp]$ cat x1.cc
class A
{
public:
A();
virtual ~A();
static int i;
};
A::A()
{
;
}
A::~A()
{
;
}
int A::i = 1;
class B : public A
{
public:
B();
virtual ~B();
static int j;
static int k;
};
B::B()
{
;
}
B::~B()
{
;
}
int B::j = 2;
int B::k = 3;
int main ()
{
B * pB = new B;
delete pB;
}
[chastain@snapon tmp]$ g++ -v
Reading specs from /horton/chastain/fsf/2001-06-23/snapon/native/install/lib/gcc-lib/i686-pc-linux-gnu/3.0.1/specs
Configured with: /horton/chastain/fsf/2001-06-23/source/configure --prefix=/horton/chastain/fsf/2001-06-23/snapon/native/install --disable-shared --enable-languages=c,c++,f77 --with-gnu-as --with-as=/horton/chastain/localdisk/snapon/baseline/binutils-2.11.2/native/install/bin/as --with-gnu-ld --with-ld=/horton/chastain/localdisk/snapon/baseline/binutils-2.11.2/native/install/bin/ld --enable-gdbmi
Thread model: single
gcc version 3.0.1 20010623 (prerelease)
[chastain@snapon tmp]$ g++ -g -o x1.exe x1.cc
[chastain@snapon tmp]$ gdb -v
GNU gdb 2001-06-24-cvs (MI_OUT)
Copyright 2001 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
[chastain@snapon tmp]$ gdb gdb
GNU gdb 2001-06-24-cvs (MI_OUT)
Copyright 2001 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu"...
(gdb) set prompt [top]
[top] set args x1.exe
[top] break error
Breakpoint 1 at 0x80d4556: file /horton/chastain/fsf/2001-06-23/source/gdb/utils.c, line 653.
[top] run
Starting program: /horton/chastain/fsf/2001-06-23/snapon/native/install/bin/gdb x1.exe
GNU gdb 2001-06-24-cvs (MI_OUT)
Copyright 2001 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu"...
(gdb) break main
Breakpoint 1 at 0x80488b6: file x1.cc, line 45.
(gdb) run
Starting program: /home/chastain/tmp/x1.exe
Breakpoint 1, main () at x1.cc:45
45 B * pB = new B;
(gdb) next
46 delete pB;
(gdb) ptype pB
type = class B : public A {
public:
static int j;
static int k;
B & operator=(B const&);
B(B const&);
B(B const&);
B();
B();
~B();
virtual ~B();
virtual ~B();
} *
(gdb) print pB
$1 = (B *) 0x8050538
(gdb) print *pB
Breakpoint 1, error (string=0x819d620 "Value can't be converted to integer.")
at /horton/chastain/fsf/2001-06-23/source/gdb/utils.c:653
653 va_start (args, string);
[top] bt
#0 error (string=0x819d620 "Value can't be converted to integer.")
at /horton/chastain/fsf/2001-06-23/source/gdb/utils.c:653
#1 0x0807445d in unpack_long ()
at /horton/chastain/fsf/2001-06-23/source/gdb/values.c:661
#2 0x0807428e in value_as_pointer (val=0x84e9968)
at /horton/chastain/fsf/2001-06-23/source/gdb/values.c:602
#3 0x0812dd90 in gnuv3_rtti_type (value=0x84f3e38, full_p=0xbffff0d8,
top_p=0xbffff0dc, using_enc_p=0xbffff0e0)
at /horton/chastain/fsf/2001-06-23/source/gdb/gnu-v3-abi.c:211
#4 0x080d7a71 in value_rtti_type (v=0x84f3e38, full=0xbffff0d8,
top=0xbffff0dc, using_enc=0xbffff0e0)
at /horton/chastain/fsf/2001-06-23/source/gdb/cp-abi.c:76
#5 0x0807d649 in value_full_object (argp=0x84f3e38, rtype=0x0, xfull=0,
xtop=0, xusing_enc=0)
at /horton/chastain/fsf/2001-06-23/source/gdb/valops.c:3158
#6 0x0807a9cd in value_ind (arg1=0x84960f8)
at /horton/chastain/fsf/2001-06-23/source/gdb/valops.c:1016
#7 0x08078655 in evaluate_subexp_standard (expect_type=0x0, exp=0x84e9910,
pos=0xbffff3c4, noside=EVAL_NORMAL)
at /horton/chastain/fsf/2001-06-23/source/gdb/eval.c:1620
#8 0x0807532b in evaluate_subexp (expect_type=0x0, exp=0x84e9910,
pos=0xbffff3c4, noside=EVAL_NORMAL)
at /horton/chastain/fsf/2001-06-23/source/gdb/eval.c:69
---Type <return> to continue, or q <return> to quit---
#9 0x080754ee in evaluate_expression (exp=0x84e9910)
at /horton/chastain/fsf/2001-06-23/source/gdb/eval.c:158
#10 0x08083132 in print_command_1 (exp=0x8220416 "*pB", inspect=0, voidprint=1)
at /horton/chastain/fsf/2001-06-23/source/gdb/printcmd.c:918
#11 0x08083323 in print_command (exp=0x8220416 "*pB", from_tty=1)
at /horton/chastain/fsf/2001-06-23/source/gdb/printcmd.c:981
#12 0x080d22d3 in execute_command (p=0x8220418 "B", from_tty=1)
at /horton/chastain/fsf/2001-06-23/source/gdb/top.c:789
#13 0x0809d97d in command_handler (command=0x8220410 "print *pB")
at /horton/chastain/fsf/2001-06-23/source/gdb/event-top.c:513
#14 0x0809de43 in command_line_handler (rl=0x84a8c88 "(\013#\bðA\r\büóÿ¿\021")
at /horton/chastain/fsf/2001-06-23/source/gdb/event-top.c:809
#15 0x08188a26 in rl_callback_read_char ()
at /horton/chastain/fsf/2001-06-23/source/readline/callback.c:114
#16 0x0809d86f in stdin_event_handler (error=0, client_data=0x0)
at /horton/chastain/fsf/2001-06-23/source/gdb/event-top.c:420
#17 0x080eb8b7 in handle_file_event (event_file_desc=0)
at /horton/chastain/fsf/2001-06-23/source/gdb/event-loop.c:706
#18 0x080eb34e in process_event ()
at /horton/chastain/fsf/2001-06-23/source/gdb/event-loop.c:335
#19 0x080eb39b in gdb_do_one_event (data=0x0)
at /horton/chastain/fsf/2001-06-23/source/gdb/event-loop.c:372
#20 0x080d1e8a in catch_errors (func=0x80eb370 <gdb_do_one_event>, args=0x0,
---Type <return> to continue, or q <return> to quit---
errstring=0x81c6800 "", mask=6)
at /horton/chastain/fsf/2001-06-23/source/gdb/top.c:472
#21 0x080eb3d3 in start_event_loop ()
at /horton/chastain/fsf/2001-06-23/source/gdb/event-loop.c:396
#22 0x08070861 in captured_command_loop (data=0x0)
at /horton/chastain/fsf/2001-06-23/source/gdb/main.c:102
#23 0x080d1e8a in catch_errors (func=0x8070850 <captured_command_loop>,
args=0x0, errstring=0x819ba82 "", mask=6)
at /horton/chastain/fsf/2001-06-23/source/gdb/top.c:472
#24 0x08071073 in captured_main (data=0xbffff970)
at /horton/chastain/fsf/2001-06-23/source/gdb/main.c:724
#25 0x080d1e8a in catch_errors (func=0x80708a0 <captured_main>,
args=0xbffff970, errstring=0x819ba82 "", mask=6)
at /horton/chastain/fsf/2001-06-23/source/gdb/top.c:472
#26 0x080712d7 in main (argc=2, argv=0xbffff9e4)
at /horton/chastain/fsf/2001-06-23/source/gdb/main.c:735
#27 0x400a0b65 in __libc_start_main (main=0x80712b0 <main>, argc=2,
ubp_av=0xbffff9e4, init=0x806fc68 <_init>, fini=0x819b950 <_fini>,
rtld_fini=0x4000df24 <_dl_fini>, stack_end=0xbffff9dc)
at ../sysdeps/generic/libc-start.c:111
[top] cont
Continuing.
Value can't be converted to integer.
(gdb) cont
Continuing.
Program exited normally.
(gdb) quit
Program exited normally.
[top] quit
[chastain@snapon tmp]$ exit
exit
Script done on Thu Jun 28 22:46:27 2001