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Home » Language IDEs » C / C++ IDE (CDT) » breakpoints ignored(docker/trusty/java 8/eclipse/cdt/ssh/x11 works, builds, runs, but does not debug)
breakpoints ignored [message #1709731] Wed, 30 September 2015 14:54 Go to next message
nir droid is currently offline nir droidFriend
Messages: 6
Registered: September 2015
Junior Member
hi,
my configuration is:
running as docker image
* ubuntu trusty (14.04) + java 8 + eclipse cdt
* build essentials (...)
* ssh + x11
i login from another machine (windows + putty + xming) and run eclipse
everything works fine - it builds and run everything

the problem is when I try to debug it:
1. eclipse does not suggest me to open the debug view. this is not a big issue but it may suggest a problem
2. it does not break on the breakpoints

i tried it with the "hello world" wizard app, and here are the relevant logs:

gdb traces:
444,132 2-gdb-version
444,132 ~"GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1\n"
444,135 ~"Copyright (C) 2014 Free Software Foundation, Inc.\n"
444,135 ~"License GPLv3+: GNU GPL version 3 or later <http ://gnu.org/licenses/gpl.html>\nThis is fre\
e software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitt\
ed by law.  Type \"show copying\"\nand \"show warranty\" for details.\n"
444,135 ~"This GDB was configured as \"x86_64-linux-gnu\".\nType \"show configuration\" for configur\
ation details."
444,135 ~"\nFor bug reporting instructions, please see:\n"
444,135 ~"<http ://www.gnu.org/software/gdb/bugs/>.\n"
444,135 ~"Find the GDB manual and other documentation resources online at:\n<http ://www.gnu.org/soft\
ware/gdb/documentation/>.\n"
444,135 ~"For help, type \"help\".\n"
444,135 ~"Type \"apropos word\" to search for commands related to \"word\".\n"
444,135 2^done
444,136 (gdb) 
444,143 3-environment-cd /home/eclipse/workspace_tmp2/hw
444,144 3^done
444,144 (gdb) 
444,145 4-gdb-set breakpoint pending on
444,145 4^done
444,145 (gdb) 
444,155 5-gdb-set detach-on-fork on
444,155 5^done
444,155 (gdb) 
444,156 6-enable-pretty-printing
444,156 6^done
444,156 (gdb) 
444,158 7-gdb-set python print-stack none
444,158 7^done
444,158 (gdb) 
444,160 8-gdb-set print object on
444,160 8^done
444,160 (gdb) 
444,161 9-gdb-set print sevenbit-strings on
444,161 9^done
444,161 (gdb) 
444,163 10-gdb-set host-charset UTF-8
444,163 10^done
444,163 (gdb) 
444,169 11-gdb-set target-charset US-ASCII
444,169 11^done
444,170 (gdb) 
444,171 12-gdb-set target-wide-charset UTF-32
444,171 12^done
444,172 (gdb) 
444,173 13-gdb-set dprintf-style call
444,173 13^done
444,173 (gdb) 
444,176 14source .gdbinit
444,176 &"source .gdbinit\n"
444,177 &".gdbinit: No such file or directory.\n"
444,177 14^error,msg=".gdbinit: No such file or directory."
444,177 (gdb) 
444,180 15-gdb-set target-async off
444,180 15^done
444,180 (gdb) 
444,181 16-gdb-set auto-solib-add on
444,182 16^done
444,182 (gdb) 
444,202 17-file-exec-and-symbols --thread-group i1 /home/eclipse/workspace_tmp2/hw/Debug/hw
444,209 17^done
444,209 (gdb) 
444,213 18-gdb-show --thread-group i1 language
444,213 18^done,value="auto"
444,214 (gdb) 
444,215 19-gdb-set --thread-group i1 language c
444,215 19^done
444,215 (gdb) 
444,217 20-interpreter-exec --thread-group i1 console "p/x (char)-1"
444,217 ~"$1 = 0xff\n"
444,217 20^done
444,218 (gdb) 
444,223 21-data-evaluate-expression --thread-group i1 "sizeof (void*)"
444,223 21^done,value="8"
444,223 (gdb) 
444,227 22-gdb-set --thread-group i1 language auto
444,228 22^done
444,228 (gdb) 
444,230 23-interpreter-exec --thread-group i1 console "show endian"
444,230 ~"The target endianness is set automatically (currently little endian)\n"
444,230 23^done
444,230 (gdb) 
444,266 24-list-thread-groups
444,266 24^done,groups=[{id="i1",type="process",executable="/home/eclipse/workspace_tmp2/hw/Debug/hw\
"}]
444,269 (gdb) 
444,274 25-break-insert -f /home/eclipse/workspace_tmp2/hw/src/hw.cpp:13
444,275 25^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x0000000000400861"\
,func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace_tmp2/hw/src/hw.cpp",line="13",\
thread-groups=["i1"],times="0",original-location="/home/eclipse/workspace_tmp2/hw/src/hw.cpp:13"}
444,276 (gdb) 
444,314 26-break-insert -t -f main
444,314 26^done,bkpt={number="2",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400861",\
func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace_tmp2/hw/src/hw.cpp",line="13",t\
hread-groups=["i1"],times="0",original-location="main"}
444,314 (gdb) 
444,323 27-inferior-tty-set --thread-group i1 /dev/pts/1
444,323 27^done
444,323 (gdb) 
444,337 28-exec-run --thread-group i1
444,337 =thread-group-started,id="i1",pid="293"
444,338 =thread-created,id="1",group-id="i1"
444,338 29-list-thread-groups --available
444,348 =thread-exited,id="1",group-id="i1"
444,348 =thread-group-exited,id="i1"
444,348 28^error,msg="During startup program exited normally."
444,349 (gdb) 
444,351 29^done,groups=[{id="1",type="process",description="/usr/sbin/sshd -D",user="root",cores=["2\
"]},{id="5",type="process",description="sshd: eclipse [priv]",user="root",cores=["1"]},{id="16",type\
="process",description="sshd: eclipse@pts/0",user="eclipse",cores=["2"]},{id="17",type="process",des\
cription="-bash",user="eclipse",cores=["1"]},{id="29",type="process",description="eclipse",user="ecl\
ipse",cores=["3"]},{id="212",type="process",description="/usr/bin/java -Dosgi.requiredJavaVersion=1.\
7 -XX:MaxPermSize=256m -Xms256m -Xmx1024m -jar /usr/local/eclipse//plugins/org.eclipse.equinox.launc\
her_1.3.100.v20150511-1540.jar -data file:/home/eclipse/workspace_tmp2/ -os linux -ws gtk -arch x86_\
64 -showsplash /usr/local/eclipse//plugins/org.eclipse.platform_4.5.0.v20150603-2000/splash.bmp -lau\
ncher /usr/local/eclipse/eclipse -name Eclipse --launcher.library /usr/local/eclipse//plugins/org.ec\
lipse.equinox.launcher.gtk.linux.x86_64_1.1.300.v20150602-1417/eclipse_1612.so -startup /usr/local/e\
clipse//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar --launcher.appendVmargs -exi\
tdata 0 -product org.eclipse.epp.package.cpp.product -vm /usr/bin/java -vmargs -Dosgi.requiredJavaVe\
rsion=1.7 -XX:MaxPermSize=256m -Xms256m -Xmx1024m -jar /usr/local/eclipse//plugins/org.eclipse.equin\
ox.launcher_1.3.100.v20150511-1540.jar",user="eclipse",cores=["0","1","2","3"]},{id="278",type="proc\
ess",description="gdb --interpreter mi2 --nx",user="eclipse",cores=["0"]}]
444,352 (gdb) 
444,375 30-gdb-exit
444,378 30^exit



eclipse log:
!SESSION 2015-09-30 14:04:51.869 -----------------------------------------------
eclipse.buildId=4.5.0.I20150603-2000
java.version=1.8.0_60
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Framework arguments:  -product org.eclipse.epp.package.cpp.product
Command-line arguments:  -os linux -ws gtk -arch x86_64 -product org.eclipse.epp.package.cpp.product

!ENTRY org.eclipse.cdt.dsf 4 10005 2015-09-30 14:09:23.261
!MESSAGE Request for monitor: 'RequestMonitor (org.eclipse.cdt.dsf.mi.service.MIRunControl$9@42f3efb4): Status ERROR: org.eclipse.cdt.dsf.gdb code=10001 Context cannot be suspended. null' resulted in an error.
!SUBENTRY 1 org.eclipse.cdt.dsf.gdb 4 10001 2015-09-30 14:09:23.261
!MESSAGE Context cannot be suspended.

Re: breakpoints ignored [message #1709882 is a reply to message #1709731] Thu, 01 October 2015 17:22 Go to previous messageGo to next message
Marc Khouzam is currently offline Marc KhouzamFriend
Messages: 357
Registered: July 2009
Senior Member
First, if breakpoints are not working then it can explain why you didn't get to switch to the debug perspective. Go to Preferences->Run/Debug->Perspectives and at the top you will see two setting about switching perspectives; if you only switch when "an application suspends" that explains it.

As for the breakpoints, this looks bad:
444,348 28^error,msg="During startup program exited normally."

Can you try to reproduce manually with gdb to see if there is a problem there?
You can start gdb like this

gdb -i mi -nx

and then paste the eclipse commands into it. To get a clean set of eclipse command, paste the above list into:
http://nova.polymtl.ca/~simark/mi-cleaner.html
Re: breakpoints ignored [message #1709883 is a reply to message #1709882] Thu, 01 October 2015 17:24 Go to previous messageGo to next message
Marc Khouzam is currently offline Marc KhouzamFriend
Messages: 357
Registered: July 2009
Senior Member
Oh, and you probably want to first try with GDB with a very simply set of commands

gdb -nx /home/eclipse/workspace_tmp2/hw/Debug/hw
(gdb) start

and see what happens.

Marc
Re: breakpoints ignored [message #1709898 is a reply to message #1709883] Thu, 01 October 2015 19:31 Go to previous messageGo to next message
nir droid is currently offline nir droidFriend
Messages: 6
Registered: September 2015
Junior Member
the short version:
eclipse@eclipse:~/workspace/hw/Debug$ gdb -i mi -nx ./hw
=thread-group-added,id="i1"
~"GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1\n"
~"Copyright (C) 2014 Free Software Foundation, Inc.\n"
~"License GPLv3+: GNU GPL version 3 or later <http ://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Type \"show copying\"\nand \"show warranty\" for details.\n"
~"This GDB was configured as \"x86_64-linux-gnu\".\nType \"show configuration\" for configuration details."
~"\nFor bug reporting instructions, please see:\n"
~"<http ://www.gnu.org/software/gdb/bugs/>.\n"
~"Find the GDB manual and other documentation resources online at:\n<http ://www.gnu.org/software/gdb/documentation/>.\n"
~"For help, type \"help\".\n"
~"Type \"apropos word\" to search for commands related to \"word\"...\n"
~"Reading symbols from ./hw..."
~"done.\n"
(gdb)
start
&"start\n"
~"Temporary breakpoint 1 at 0x400861: file ../src/hw.cpp, line 13.\n"
=breakpoint-created,bkpt={number="1",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400861",func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace/hw/src/hw.cpp",line="13",thread-groups=["i1"],times="0",original-location="main"}
~"Starting program: /home/eclipse/workspace/hw/Debug/hw \n"
=thread-group-started,id="i1",pid="19533"
=thread-created,id="1",group-id="i1"
hello hw
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1"
&"During startup program exited normally.\n"
^error,msg="During startup program exited normally."
(gdb)


the full (eclipse) version:
eclipse@eclipse:~/workspace/hw/Debug$ gdb -i mi -nx ./hw
=thread-group-added,id="i1"
~"GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1\n"
~"Copyright (C) 2014 Free Software Foundation, Inc.\n"
~"License GPLv3+: GNU GPL version 3 or later <http ://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThee \"show copying\"\nand \"show warranty\" for details.\n"
~"This GDB was configured as \"x86_64-linux-gnu\".\nType \"show configuration\" for configuration details."
~"\nFor bug reporting instructions, please see:\n"
~"<http ://www.gnu.org/software/gdb/bugs/>.\n"
~"Find the GDB manual and other documentation resources online at:\n<http ://www.gnu.org/software/gdb/documentation/>.\n"
~"For help, type \"help\".\n"
~"Type \"apropos word\" to search for commands related to \"word\"...\n"
~"Reading symbols from ./hw..."
~"done.\n"
(gdb)
 2-gdb-version
~"GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1\n"
~"Copyright (C) 2014 Free Software Foundation, Inc.\n"
~"License GPLv3+: GNU GPL version 3 or later <http ://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Type \"show copying\"\nand \"show warranty\" for details.\n"
~"This GDB was configured as \"x86_64-linux-gnu\".\nType \"show configuration\" for configuration details."
~"\nFor bug reporting instructions, please see:\n"
~"<http ://www.gnu.org/software/gdb/bugs/>.\n"
~"Find the GDB manual and other documentation resources online at:\n<http ://www.gnu.org/software/gdb/documentation/>.\n"
~"For help, type \"help\".\n"
~"Type \"apropos word\" to search for commands related to \"word\".\n"
2^done
(gdb)
 3-environment-cd /home/eclipse/workspace/hw
3^done
(gdb)
 4-gdb-set breakpoint pending on
4^done
(gdb)
 5-gdb-set detach-on-fork on
5^done
(gdb)
 6-enable-pretty-printing
6^done
(gdb)
 7-gdb-set python print-stack none
7^done
(gdb)
 8-gdb-set print object on
8^done
(gdb)
 9-gdb-set print sevenbit-strings on
9^done
(gdb)
 10-gdb-set host-charset UTF-8
10^done
(gdb)
 11-gdb-set target-charset US-ASCII
11^done
(gdb)
 12-gdb-set target-wide-charset UTF-32
12^done
(gdb)
 13-gdb-set dprintf-style call
13^done
(gdb)
 14source .gdbinit
&"source .gdbinit\n"
&".gdbinit: No such file or directory.\n"
14^error,msg=".gdbinit: No such file or directory."
(gdb)
 15-gdb-set target-async off
15^done
(gdb)
 16-gdb-set auto-solib-add on
16^done
(gdb)
 17-file-exec-and-symbols --thread-group i1 /home/eclipse/workspace/hw/Debug/hw
17^done
(gdb)
 18-gdb-show --thread-group i1 language
18^done,value="auto"
(gdb)
 19-gdb-set --thread-group i1 language c
19^done
(gdb)
 20-interpreter-exec --thread-group i1 console "p/x (char)-1"
~"$1 = 0xff\n"
20^done
(gdb)
 21-data-evaluate-expression --thread-group i1 "sizeof (void*)"
21^done,value="8"
(gdb)
 22-gdb-set --thread-group i1 language auto
22^done
(gdb)
 23-interpreter-exec --thread-group i1 console "show endian"
~"The target endianness is set automatically (currently little endian)\n"
23^done
(gdb)
 24-list-thread-groups
24^done,groups=[{id="i1",type="process",executable="/home/eclipse/workspace/hw/Debug/hw"}]
(gdb)
 25-break-insert -f /home/eclipse/workspace/hw/src/hw.cpp:14
25^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x000000000040087d",func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace/hw/src/hw.cpp",line="14",thread-groups=["i1"],times="0",original-location="/home/eclipse/workspace/hw/src/hw.cpp:14"}
(gdb)
 26-break-insert -f /home/eclipse/workspace/hw/src/hw.cpp:13
26^done,bkpt={number="2",type="breakpoint",disp="keep",enabled="y",addr="0x0000000000400861",func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace/hw/src/hw.cpp",line="13",thread-groups=["i1"],times="0",original-location="/home/eclipse/workspace/hw/src/hw.cpp:13"}
(gdb)
 27-break-insert -t -f main
27^done,bkpt={number="3",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400861",func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace/hw/src/hw.cpp",line="13",thread-groups=["i1"],times="0",original-location="main"}
(gdb)
 28-inferior-tty-set --thread-group i1 /dev/pts/1
28^done
(gdb)
 29-exec-run --thread-group i1
&"/dev/pts/1: No such file or directory.\n"
=thread-group-started,id="i1",pid="19520"
=thread-created,id="1",group-id="i1"
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1"
29^error,msg="During startup program exited with code 1."
(gdb)
 30-list-thread-groups --available
30^done,groups=[{id="1",type="process",description="/usr/sbin/sshd -D",user="root",cores=["3"]},{id="5",type="process",description="sshd: eclipse [priv]",user="root",cores=["0"]},{id="16",type="process",description="sshd: eclipse@pts/0",user="eclipse",cores=["2"]},{id="17",type="process",description="-bash",user="eclipse",cores=["1"]},{id="229",type="process",description="cpp/bin/samples/AboutService",user="eclipse",cores=["0","1","2","3"]},{id="724",type="process",description="/home/eclipse/alljoyn_repo/15.04/core/alljoyn/build/linux/x86_64/debug/dist/cpp/bin/alljoyn-daemon",user="eclipse",cores=["0","1","2","3"]},{id="19415",type="process",description="eclipse",user="eclipse",cores=["3"]},{id="19416",type="process",description="/usr/bin/java -Dosgi.requiredJavaVersion=1.7 -XX:MaxPermSize=256m -Xms256m -Xmx1024m -jar /usr/local/eclipse//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -os linux -ws gtk -arch x86_64 -showsplash /usr/local/eclipse//plugins/org.eclipse.platform_4.5.0.v20150603-2000/splash.bmp -launcher /usr/local/eclipse/eclipse -name Eclipse --launcher.library /usr/local/eclipse//plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.300.v20150602-1417/eclipse_1612.so -startup /usr/local/eclipse//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar --launcher.appendVmargs -exitdata 10001 -product org.eclipse.epp.package.cpp.product -vm /usr/bin/java -vmargs -Dosgi.requiredJavaVersion=1.7 -XX:MaxPermSize=256m -Xms256m -Xmx1024m -jar /usr/local/eclipse//plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar",user="eclipse",cores=["0","1","2","3"]},{id="19518",type="process",description="gdb -i mi -nx ./hw",user="eclipse",cores=["0"]}]
(gdb)
 31-list-thread-groups
31^done,groups=[{id="i1",type="process",executable="/home/eclipse/workspace/hw/Debug/hw"}]
(gdb)
 32-gdb-exit
32^exit



there is an error in command 29 with the /dev/pts/1, im not sure how important is it
Re: breakpoints ignored [message #1709909 is a reply to message #1709898] Thu, 01 October 2015 20:23 Go to previous messageGo to next message
David VavraFriend
Messages: 1426
Registered: October 2012
Senior Member
I would have thought the "During startup program exited with code 1." would have meant something caused an exit during startup initialization but then, what produced "hello hw" in the short version post and why isn't it in the long version?
Re: breakpoints ignored [message #1709910 is a reply to message #1709909] Thu, 01 October 2015 20:34 Go to previous messageGo to next message
nir droid is currently offline nir droidFriend
Messages: 6
Registered: September 2015
Junior Member
two more outputs:
1. when i remove #28:
 27-break-insert -t -f main
27^done,bkpt={number="3",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400861",func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace/hw/src/hw.cpp",line="13",thread-groups=["i1"],times="0",original-location="main"}
(gdb)
 29-exec-run --thread-group i1
=thread-group-started,id="i1",pid="19701"
=thread-created,id="1",group-id="i1"
hello hw
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1"
29^error,msg="During startup program exited normally."
(gdb)


2. when i change /dev/pts/1 to /dev/pts/0:
 27-break-insert -t -f main
27^done,bkpt={number="3",type="breakpoint",disp="del",enabled="y",addr="0x0000000000400861",func="main()",file="../src/hw.cpp",fullname="/home/eclipse/workspace/hw/src/hw.cpp",line="13",thread-groups=["i1"],times="0",original-location="main"}
(gdb)
 28-inferior-tty-set --thread-group i1 /dev/pts/0
28^done
(gdb)
 29-exec-run --thread-group i1
&"warning: GDB: Failed to set controlling terminal: Operation not permitted\n"
=thread-group-started,id="i1",pid="19707"
=thread-created,id="1",group-id="i1"
hello hw
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1"
29^error,msg="During startup program exited normally."
(gdb)
Re: breakpoints ignored [message #1710119 is a reply to message #1709910] Sun, 04 October 2015 17:10 Go to previous messageGo to next message
Marc Khouzam is currently offline Marc KhouzamFriend
Messages: 357
Registered: July 2009
Senior Member
The command
28-inferior-tty-set --thread-group i1 /dev/pts/1
tells GDB to redirect the output of your program to a console in Eclipse. When you repeat by hand directly in GDB, that console in eclipse does not exist which is why you can see the output. When you use pts/0, it happens to be the one of the shell running GDB, so you get the output there. This means is that the output is sent by the program in every case.

We can then focus on the short version of your GDB test, which shows us that GDB is not able to interrupt the program.
Is your program compiled with -g? You should also turn off optimizations during compilation.

Marc
Re: breakpoints ignored [message #1710273 is a reply to message #1710119] Mon, 05 October 2015 16:18 Go to previous messageGo to next message
nir droid is currently offline nir droidFriend
Messages: 6
Registered: September 2015
Junior Member
its the standard build, i didn't change any switch:
make all
Building file: ../src/hw.cpp
Invoking: GCC C++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"src/hw.d" -MT"src/hw.d" -o "src/hw.o" "../src/hw.cpp"
Finished building: ../src/hw.cpp

Building target: hw
Invoking: GCC C++ Linker
g++  -o "hw"  ./src/hw.o

Re: breakpoints ignored [message #1710285 is a reply to message #1710273] Mon, 05 October 2015 17:10 Go to previous message
Marc Khouzam is currently offline Marc KhouzamFriend
Messages: 357
Registered: July 2009
Senior Member
I'm guessing it is your docker setup that prevents GDB from setting breakpoints.
Maybe this:
http://stackoverflow.com/questions/24586086/gdb-problems-inside-docker
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