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warning: GDB: Failed to set controlling terminal: Operation not permitted


warning: GDB: Failed to set controlling terminal: Operation not permitted

By : Anisweta Roy
Date : October 21 2020, 11:12 PM
this one helps. I get this error (title of this question), when I am attempting to debug C/C++ programs using gdb with Netbeans IDE. , Project > Properties > Run > Console Type > Output Windows
code :


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warning: GDB: Failed to set controlling terminal: Invalid argument

warning: GDB: Failed to set controlling terminal: Invalid argument


By : Valerijs Tislers
Date : March 29 2020, 07:55 AM
will be helpful for those in need This is a bug in Qt Creator, which is not invoking GDB correctly (either inside a pseudoterminal, or with command line arguments that tell it not to expect to be run inside a pseudoterminal). It is also a bug in GDB, which could figure out for itself that it wasn't being run inside a pseudoterminal and behave accordingly. I suspect the GDB maintainers will take the position that this is Qt Creator's fault, and vice versa, alas.
There is a claimed workaround here: http://www.qtforum.org/article/31905/debugging-qt-application-on-linux.html but it sounds kinda dodgy to me.
KDevelop debugging warning: Failed to set controlling terminal: Operation not permitted

KDevelop debugging warning: Failed to set controlling terminal: Operation not permitted


By : user3527999
Date : March 29 2020, 07:55 AM
seems to work fine I also had this problem, but I use gdb in KDevelop sparsely enough that hadn't bothered me yet. Here's my log of trying to fix it:
Grepping through the GDB 7.3.1 source code reveals that this message is printed when GDB tries to set its master TTY to a newly-created pseudo-tty (see gdb/inflow.c, lines 683-740). In particular, a call to ioctl with request TIOCSCTTY fails with a permissions error.
code :
/*
 * The process must be a session leader and
 * not have a controlling tty already.
 */
GDB cannot use the tty* or pty* devices.
Check the settings on /dev/tty* and /dev/pty*
As root you may need to "chmod ug+rw" tty* and pty* devices and/or add the user to the tty group using "usermod -G tty username".
tty > FIFO_PATH ; trap "" INT QUIT TSTP ; exec<&-; exec>&-; while :; do sleep 3600;done
Debug error: &"warning: GDB: Failed to set controlling terminal: Inappropriate ioctl for device\n"

Debug error: &"warning: GDB: Failed to set controlling terminal: Inappropriate ioctl for device\n"


By : Miki
Date : March 29 2020, 07:55 AM
it helps some times I get this message every time I debug, but the debugging works fine. I'm sure I found a comment on the QT forums that says just ignore it.
Have you tried debugging a trivial "hello world" program?
Code::Blocks - warning: GDB: Failed to set controlling terminal: Operation not permitted

Code::Blocks - warning: GDB: Failed to set controlling terminal: Operation not permitted


By : Branden Sam
Date : March 29 2020, 07:55 AM
seems to work fine I think this just means that code::blocks is running gdb in "CLI" mode without making a pseudo-terminal. So, when gdb tries terminal operations, they fail. You can just ignore these messages.
Laravel chmod(/var/dev/project/storage/oauth-public.key): Operation failed: Operation not permitted

Laravel chmod(/var/dev/project/storage/oauth-public.key): Operation failed: Operation not permitted


By : aku wahyu
Date : March 29 2020, 07:55 AM
this one helps. After I updated the following packages I got an error that the oauth-public.key file couldn't be found. , Try:
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