'[Bug 289992] BP inserted while running - hit first time is partial'

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List:       kde-bugs-dist
Subject:    [Bug 289992] BP inserted while running - hit first time is partial
From:       leon pollak <leonp () plris ! com>
Date:       2011-12-30 22:17:16
Message-ID: E1RgklI-0004Jw-Ly () bugs ! kde ! org
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https://bugs.kde.org/show_bug.cgi?id=289992





--- Comment #2 from leon pollak <leonp plris com>  2011-12-30 22:17:16 ---
I succeeded to reproduce this on PC (not in the office till 3 jan).
This is the output after loading and stopping at the first line of main()
routine:
(gdb) -gdb-exit
(gdb) quit
^exit
gdb --interpreter=mi2 -quiet
(gdb) -gdb-show version
GNU gdb (GDB) Fedora (7.3.1-46.fc15)
Copyright (C) 2011 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
^done
(gdb) -gdb-set width 0
^done
(gdb) -gdb-set height 0
^done
(gdb) handle SIG32 pass nostop noprint
handle SIG32 pass nostop noprint
Signal Stop Print Pass to program Description
SIG32 No No Yes Real-time event 32
^done
(gdb) handle SIG41 pass nostop noprint
handle SIG41 pass nostop noprint
Signal Stop Print Pass to program Description
SIG41 No No Yes Real-time event 41
^done
(gdb) handle SIG42 pass nostop noprint
handle SIG42 pass nostop noprint
Signal Stop Print Pass to program Description
SIG42 No No Yes Real-time event 42
^done
(gdb) handle SIG43 pass nostop noprint
handle SIG43 pass nostop noprint
Signal Stop Print Pass to program Description
SIG43 No No Yes Real-time event 43
^done
(gdb) -enable-pretty-printing
^done
(gdb) -gdb-set charset UTF-8
^done
(gdb) -gdb-set print sevenbit-strings off
^done
(gdb) source /usr/share/kde4/apps/kdevgdb/printers/gdbinit
source /usr/share/kde4/apps/kdevgdb/printers/gdbinit
^done
(gdb) -inferior-tty-set /dev/pts/21
^done
(gdb) -environment-cd /Projects/CSU/BuildPC
^done
(gdb) -gdb-set print static-members on
^done
(gdb) -gdb-set print asm-demangle on
^done
(gdb) source /Projects/CSU/BuildPC/.gdbinit
source /Projects/CSU/BuildPC/.gdbinit
Breakpoint 1 at 0x8098d86: file /Projects/CSU/src/main.cpp, line 35.
=thread-group-started,id="i1",pid="32445"
=thread-created,id="1",group-id="i1"
^running
*running,thread-id="all"
=library-loaded,id="/lib/ld-linux.so.2",target-name="/lib/ld-linux.so.2",host-name="/lib/ld-linux.so.2",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/lib/libnsl.so.1",target-name="/lib/libnsl.so.1",host-name="/lib/libnsl.so.1",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/lib/librt.so.1",target-name="/lib/librt.so.1",host-name="/lib/librt.so.1",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/lib/libdl.so.2",target-name="/lib/libdl.so.2",host-name="/lib/libdl.so.2",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/lib/libpthread.so.0",target-name="/lib/libpthread.so.0",host-name="/lib/libpthread.so.0",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/usr/lib/libstdc++.so.6",target-name="/usr/lib/libstdc++.so.6",host-name="/usr/lib/libstdc++.so.6",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/lib/libm.so.6",target-name="/lib/libm.so.6",host-name="/lib/libm.so.6",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/lib/libgcc_s.so.1",target-name="/lib/libgcc_s.so.1",host-name="/lib/libgcc_s.so.1",symbols-loaded="0",thread-group="i1"
 =library-loaded,id="/lib/libc.so.6",target-name="/lib/libc.so.6",host-name="/lib/libc.so.6",symbols-loaded="0",thread-group="i1"
 [Thread debugging using libthread_db enabled]
Traceback (most recent call last):
File "/usr/share/gdb/auto-load/usr/lib/libstdc++.so.6.0.16-gdb.py", line 59, in
<module>
from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named v6.printers
=thread-created,id="2",group-id="i1"
[New Thread 0xf7fd4b70 (LWP 32448)]
*running,thread-id="all"

Breakpoint 1, main (argc=1, argv=0xffffd7c4) at /Projects/CSU/src/main.cpp:35
35 _lCEIN_ = NoSwapL;
*stopped,frame={addr="0x08098d86",func="main",args=[{name="argc",value="1"},{name="arg \
v",value="0xffffd7c4"}],file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line="35"},thread-id="1",stopped-threads="all",core="5"
 (gdb) -break-list
^done,BreakpointTable={nr_rows="1",nr_cols="6",hdr=[{width="7",alignment="-1",col_name \
="number",colhdr="Num"},{width="14",alignment="-1",col_name="type",colhdr="Type"},{wid \
th="4",alignment="-1",col_name="disp",colhdr="Disp"},{width="3",alignment="-1",col_nam \
e="enabled",colhdr="Enb"},{width="10",alignment="-1",col_name="addr",colhdr="Address"} \
,{width="40",alignment="2",col_name="what",colhdr="What"}],body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x08098d86",func="main(int,
 char**)",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line="35",times="1",original-location="main"}]}
 (gdb) -break-insert -f ""
^error,msg="Unmatched single quote."
(gdb) -stack-list-locals --frame 0 --simple-values
^error,msg="Cannot specify --frame without --thread"
(gdb) -var-update --frame 0 --all-values *
^error,msg="Cannot specify --frame without --thread"
(gdb) -thread-info
^done,threads=[{id="2",target-id="Thread 0xf7fd4b70 (LWP
32448)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="6"},{id="1",target-id="Thread
 0xf7fd66d0 (LWP
32445)",name="csu",frame={level="0",addr="0x08098d86",func="main",args=[{name="argc",v \
alue="1"},{name="argv",value="0xffffd7c4"}],file="/Projects/CSU/src/main.cpp",fullname \
="/Projects/CSU/src/main.cpp",line="35"},state="stopped",core="5"}],current-thread-id="1"
 (gdb) -break-list
^done,BreakpointTable={nr_rows="1",nr_cols="6",hdr=[{width="7",alignment="-1",col_name \
="number",colhdr="Num"},{width="14",alignment="-1",col_name="type",colhdr="Type"},{wid \
th="4",alignment="-1",col_name="disp",colhdr="Disp"},{width="3",alignment="-1",col_nam \
e="enabled",colhdr="Enb"},{width="10",alignment="-1",col_name="addr",colhdr="Address"} \
,{width="40",alignment="2",col_name="what",colhdr="What"}],body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x08098d86",func="main(int,
 char**)",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line="35",times="1",original-location="main"}]}
 (gdb) -stack-list-frames --thread 1 --frame 0 0 21
^done,stack=[frame={level="0",addr="0x08098d86",func="main",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line="35"}]
 (gdb) -stack-list-locals --thread 1 --frame 0 --simple-values
^done,locals=[{name="keys",type="const ucommon::keydata
*",value="0x8092321"},{name="str",type="char *",value="0xffff <Address 0xffff
out of bounds>"},{name="File",type="FILE
*",value="0x80ab090"},{name="p",type="char *",value="0x1 <Address 0x1 out of
bounds>"},{name="strr",type="char *",value="0x1 <Address 0x1 out of bounds>"}]
(gdb) -var-update --thread 1 --frame 0 --all-values *
^done,changelist=[]
(gdb) -stack-list-arguments --thread 1 --frame 0 0 0 0
^done,stack-args=[frame={level="0",args=[name="argc",name="argv"]}]
(gdb) -var-create --thread 1 --frame 0 var178 @ "keys"
^done,name="var178",numchild="2",value="0x8092321",type="const ucommon::keydata
*",thread-id="1",has_more="0"
(gdb) -var-create --thread 1 --frame 0 var179 @ "str"
^done,name="var179",numchild="1",value="0xffff <Address 0xffff out of
bounds>",type="char *",thread-id="1",has_more="0"
(gdb) -var-create --thread 1 --frame 0 var180 @ "File"
^done,name="var180",numchild="1",value="0x80ab090",type="FILE
*",thread-id="1",has_more="0"
(gdb) -var-create --thread 1 --frame 0 var181 @ "p"
^done,name="var181",numchild="1",value="0x1 <Address 0x1 out of
bounds>",type="char *",thread-id="1",has_more="0"
(gdb) -var-create --thread 1 --frame 0 var182 @ "strr"
^done,name="var182",numchild="1",value="0x1 <Address 0x1 out of
bounds>",type="char *",thread-id="1",has_more="0"
(gdb) -var-create --thread 1 --frame 0 var183 @ "argc"
^done,name="var183",numchild="0",value="1",type="int",thread-id="1",has_more="0"
(gdb) -var-create --thread 1 --frame 0 var184 @ "argv"
^done,name="var184",numchild="1",value="0xffffd7c4",type="char
**",thread-id="1",has_more="0"
-----------------------------------
Now, I press "run":
(gdb) -exec-continue
^running
*running,thread-id="1"
*running,thread-id="all"
=thread-created,id="3",group-id="i1"
[New Thread 0xf7ff9b70 (LWP 32465)]
*running,thread-id="all"
=thread-created,id="4",group-id="i1"
[New Thread 0xf7ff5b70 (LWP 32466)]
*running,thread-id="all"
=thread-created,id="5",group-id="i1"
[New Thread 0xf7ff1b70 (LWP 32467)]
*running,thread-id="all"
=thread-created,id="6",group-id="i1"
[New Thread 0xf7fedb70 (LWP 32468)]
*running,thread-id="all"
=thread-created,id="7",group-id="i1"
[New Thread 0xf7fe9b70 (LWP 32469)]
*running,thread-id="all"
=thread-created,id="8",group-id="i1"
[New Thread 0xf7fe5b70 (LWP 32470)]
*running,thread-id="all"
------------------------------------
Now, I open the thread with 'while(1)' loop - it has sleep for 100ms and some
processing. And I insert the BP inside the loop. The application stops. The gdb
output now is a bit scrambled - I show several last lines again, as the last
one is scrambled:
*running,thread-id="all"
=thread-created,id="6",group-id="i1"
[New Thread 0xf7fedb70 (LWP 32468)]
*running,thread-id="all"
=thread-created,id="7",group-id="i1"
[New Thread 0xf7fe9b70 (LWP 32469)]
*running,thread-id="all"
=thread-created,id="8",group-id="i1"
*stopped,reason="signal-received",signal-name="SIGINT",signal-meaning="Interrupt",fram \
e={addr="0x00110430",func="__kernel_vsyscall",args=[]},thread-id="1",stopped-threads="all",core="4"
 (gdb) -break-insert -f "\"/Projects/CSU/src/CSHs/CSH_DISCR.cpp\":150"
^done,bkpt={number="2",type="breakpoint",disp="keep",enabled="y",addr="0x0809ffdb",fun \
c="cCSH_DISCR::RecvInPkt()",file="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",fullname="/Pro \
jects/CSU/src/CSHs/CSH_DISCR.cpp",line="150",times="0",original-location="\"/Projects/CSU/src/CSHs/CSH_DISCR.cpp\":150"}
 (gdb) -var-create --thread 1 --frame 0 var185 @ "SYS_CPU"
^error,msg="-var-create: unable to create variable object"
(gdb) -var-create --thread 1 --frame 0 var186 @ "SYS_CPU"
^error,msg="-var-create: unable to create variable object"
(gdb) -thread-info
^done,threads=[{id="8",target-id="Thread 0xf7fe5b70 (LWP
32470)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="7",target-id="Thread
 0xf7fe9b70 (LWP
32469)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="6",target-id="Thread
 0xf7fedb70 (LWP
32468)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="2"},{id="5",target-id="Thread
 0xf7ff1b70 (LWP
32467)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="4"},{id="4",target-id="Thread
 0xf7ff5b70 (LWP
32466)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="3"},{id="3",target-id="Thread
 0xf7ff9b70 (LWP
32465)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="0"},{id="2",target-id="Thread
 0xf7fd4b70 (LWP
32448)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="2"},{id="1",target-id="Thread
 0xf7fd66d0 (LWP
32445)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="4"}],current-thread-id="1"
 (gdb) -stack-list-frames --thread 1 --frame 0 0 21
^done,stack=[frame={level="0",addr="0x00110430",func="__kernel_vsyscall"},frame={level \
="1",addr="0x413cc3c6",func="nanosleep",from="/lib/libc.so.6"},frame={level="2",addr=" \
0x4140076d",func="usleep",from="/lib/libc.so.6"},frame={level="3",addr="0x080aaa4f",fu \
nc="ucommon::Thread::sleep",file="/Projects/ucommon-5.0.6/corelib/thread.cpp",fullname \
="/Projects/ucommon-5.0.6/corelib/thread.cpp",line="1995"},frame={level="4",addr="0x08 \
093d1c",func="SystemMonitor",file="/Projects/CSU/src/helpers/SysMon.cpp",fullname="/Pr \
ojects/CSU/src/helpers/SysMon.cpp",line="25"},frame={level="5",addr="0x08099cff",func= \
"main",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line="85"}]
 (gdb) -stack-list-locals --thread 1 --frame 0 --simple-values
^done,locals=[]
(gdb) -exec-continue
^running
*running,thread-id="all"
[Switching to Thread 0xf7ff5b70 (LWP 32466)]
*stopped,reason="breakpoint-hit",disp="keep",bkptno="2",frame={addr="0x0809ffdb",func= \
"cCSH_DISCR::RecvInPkt",args=[{name="this",value="0x80dbf00"}],file="/Projects/CSU/src \
/CSHs/CSH_DISCR.cpp",fullname="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",line="150"},thread-id="4",stopped-threads="all",core="3"
 (gdb) -stack-list-arguments --thread 1 --frame 0 0 0 0
=thread-selected,id="4"
^done,stack-args=[frame={level="0",args=[]}]
(gdb) -thread-info
^done,threads=[{id="8",target-id="Thread 0xf7fe5b70 (LWP
32470)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="7",target-id="Thread
 0xf7fe9b70 (LWP
32469)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="6",target-id="Thread
 0xf7fedb70 (LWP
32468)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="5",target-id="Thread
 0xf7ff1b70 (LWP
32467)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="0"},{id="4",target-id="Thread
 0xf7ff5b70 (LWP
32466)",name="csu",frame={level="0",addr="0x0809ffdb",func="cCSH_DISCR::RecvInPkt",arg \
s=[{name="this",value="0x80dbf00"}],file="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",fullna \
me="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",line="150"},state="stopped",core="3"},{id="3",target-id="Thread
 0xf7ff9b70 (LWP
32465)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="0"},{id="2",target-id="Thread
 0xf7fd4b70 (LWP
32448)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="1",target-id="Thread
 0xf7fd66d0 (LWP
32445)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="2"}],current-thread-id="1"
 (gdb) -stack-list-frames --thread 1 --frame 0 0 21
^done,stack=[frame={level="0",addr="0x00110430",func="__kernel_vsyscall"},frame={level \
="1",addr="0x413cc3c6",func="nanosleep",from="/lib/libc.so.6"},frame={level="2",addr=" \
0x4140076d",func="usleep",from="/lib/libc.so.6"},frame={level="3",addr="0x080aaa4f",fu \
nc="ucommon::Thread::sleep",file="/Projects/ucommon-5.0.6/corelib/thread.cpp",fullname \
="/Projects/ucommon-5.0.6/corelib/thread.cpp",line="1995"},frame={level="4",addr="0x08 \
093d1c",func="SystemMonitor",file="/Projects/CSU/src/helpers/SysMon.cpp",fullname="/Pr \
ojects/CSU/src/helpers/SysMon.cpp",line="25"},frame={level="5",addr="0x08099cff",func= \
"main",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line="85"}]
 (gdb) -stack-list-locals --thread 1 --frame 0 --simple-values
^done,locals=[]
(gdb) -var-update --thread 1 --frame 0 --all-values *
^done,changelist=[{name="var184",in_scope="false",type_changed="false",has_more="0"},{ \
name="var183",in_scope="false",type_changed="false",has_more="0"},{name="var182",in_sc \
ope="false",type_changed="false",has_more="0"},{name="var181",in_scope="false",type_ch \
anged="false",has_more="0"},{name="var180",in_scope="false",type_changed="false",has_more="0"},{name="var179",value="{ucommon::String
 (ucommon::CharacterProtocol *, ucommon::strsize_t)} 0x80b4a4c
<str(ucommon::CharacterProtocol*, unsigned
short)>",in_scope="true",type_changed="true",new_type="ucommon::String
(ucommon::CharacterProtocol *,
ucommon::strsize_t)",new_num_children="0",has_more="0"},{name="var178",in_scope="false",type_changed="false",has_more="0"}]
 (gdb) -break-list
^done,BreakpointTable={nr_rows="2",nr_cols="6",hdr=[{width="7",alignment="-1",col_name \
="number",colhdr="Num"},{width="14",alignment="-1",col_name="type",colhdr="Type"},{wid \
th="4",alignment="-1",col_name="disp",colhdr="Disp"},{width="3",alignment="-1",col_nam \
e="enabled",colhdr="Enb"},{width="10",alignment="-1",col_name="addr",colhdr="Address"} \
,{width="40",alignment="2",col_name="what",colhdr="What"}],body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x08098d86",func="main(int,
 char**)",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line \
="35",times="1",original-location="main"},bkpt={number="2",type="breakpoint",disp="kee \
p",enabled="y",addr="0x0809ffdb",func="cCSH_DISCR::RecvInPkt()",file="/Projects/CSU/sr \
c/CSHs/CSH_DISCR.cpp",fullname="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",line="150",times="1",original-location="\"/Projects/CSU/src/CSHs/CSH_DISCR.cpp\":150"}]}
 (gdb) -var-delete "var178"
^done,ndeleted="1"
(gdb) -var-delete "var179"
^done,ndeleted="1"
(gdb) -var-delete "var180"
^done,ndeleted="1"
(gdb) -var-delete "var181"
^done,ndeleted="1"
(gdb) -var-delete "var182"
^done,ndeleted="1"
(gdb) -var-delete "var183"
^done,ndeleted="1"
(gdb) -var-delete "var184"
^done,ndeleted="1"
(gdb) -stack-list-arguments --thread 1 --frame 0 0 0 0
^done,stack-args=[frame={level="0",args=[]}]
(gdb) -var-create --thread 1 --frame 0 var187 @ "can"
^error,msg="-var-create: unable to create variable object"
(gdb) -var-create --thread 1 --frame 0 var188 @ "can"
^error,msg="-var-create: unable to create variable object"
(gdb) -var-create --thread 1 --frame 0 var189 @ "emulate"
^error,msg="-var-create: unable to create variable object"

----------------------------------------------
Now, as I said, the "Locals" has no '>' sign and does not present local data.
Now I press "Step next". I do not know what happens to the application, but
just not the step:

(gdb) -exec-next
Single stepping until exit from function __kernel_vsyscall,
which has no line number information.
^running
*running,thread-id="1"
*stopped,reason="end-stepping-range",frame={addr="0x413cc3c6",func="nanosleep",args=[],from="/lib/libc.so.6"},thread-id="1",stopped-threads="all",core="6"
 (gdb) -thread-info
^done,threads=[{id="8",target-id="Thread 0xf7fe5b70 (LWP
32470)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="7",target-id="Thread
 0xf7fe9b70 (LWP
32469)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="6",target-id="Thread
 0xf7fedb70 (LWP
32468)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="5",target-id="Thread
 0xf7ff1b70 (LWP
32467)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="0"},{id="4",target-id="Thread
 0xf7ff5b70 (LWP
32466)",name="csu",frame={level="0",addr="0x0809ffdb",func="cCSH_DISCR::RecvInPkt",arg \
s=[{name="this",value="0x80dbf00"}],file="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",fullna \
me="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",line="150"},state="stopped",core="3"},{id="3",target-id="Thread
 0xf7ff9b70 (LWP
32465)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="0"},{id="2",target-id="Thread
 0xf7fd4b70 (LWP
32448)",name="csu",frame={level="0",addr="0x00110430",func="__kernel_vsyscall",args=[]},state="stopped",core="5"},{id="1",target-id="Thread
 0xf7fd66d0 (LWP
32445)",name="csu",frame={level="0",addr="0x413cc3c6",func="nanosleep",args=[],from="/lib/libc.so.6"},state="stopped",core="6"}],current-thread-id="1"
 (gdb) -stack-list-frames --thread 1 --frame 0 0 21
^done,stack=[frame={level="0",addr="0x413cc3c6",func="nanosleep",from="/lib/libc.so.6" \
},frame={level="1",addr="0x4140076d",func="usleep",from="/lib/libc.so.6"},frame={level \
="2",addr="0x080aaa4f",func="ucommon::Thread::sleep",file="/Projects/ucommon-5.0.6/cor \
elib/thread.cpp",fullname="/Projects/ucommon-5.0.6/corelib/thread.cpp",line="1995"},fr \
ame={level="3",addr="0x08093d1c",func="SystemMonitor",file="/Projects/CSU/src/helpers/ \
SysMon.cpp",fullname="/Projects/CSU/src/helpers/SysMon.cpp",line="25"},frame={level="4 \
",addr="0x08099cff",func="main",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line="85"}]
 (gdb) -stack-list-locals --thread 1 --frame 0 --simple-values
^done,locals=[]
(gdb) -var-update --thread 1 --frame 0 --all-values *
^done,changelist=[]
(gdb) -break-list
^done,BreakpointTable={nr_rows="2",nr_cols="6",hdr=[{width="7",alignment="-1",col_name \
="number",colhdr="Num"},{width="14",alignment="-1",col_name="type",colhdr="Type"},{wid \
th="4",alignment="-1",col_name="disp",colhdr="Disp"},{width="3",alignment="-1",col_nam \
e="enabled",colhdr="Enb"},{width="10",alignment="-1",col_name="addr",colhdr="Address"} \
,{width="40",alignment="2",col_name="what",colhdr="What"}],body=[bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x08098d86",func="main(int,
 char**)",file="/Projects/CSU/src/main.cpp",fullname="/Projects/CSU/src/main.cpp",line \
="35",times="1",original-location="main"},bkpt={number="2",type="breakpoint",disp="kee \
p",enabled="y",addr="0x0809ffdb",func="cCSH_DISCR::RecvInPkt()",file="/Projects/CSU/sr \
c/CSHs/CSH_DISCR.cpp",fullname="/Projects/CSU/src/CSHs/CSH_DISCR.cpp",line="150",times="1",original-location="\"/Projects/CSU/src/CSHs/CSH_DISCR.cpp\":150"}]}
 (gdb) -stack-list-arguments --thread 1 --frame 0 0 0 0
^done,stack-args=[frame={level="0",args=[]}]
(gdb) -var-create --thread 1 --frame 0 var190 @ "can"
^error,msg="-var-create: unable to create variable object"
(gdb) -var-create --thread 1 --frame 0 var191 @ "can"
^error,msg="-var-create: unable to create variable object"

Hope this helps.

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