The application hangs when calling system("ls"); (Qt creator 5.7.0, Debian, Linux). What to do?

Question

Debian

In short, when calling the system () function (no matter with what argument),
the application hangs when I run it in Qt Creator 5.7.0 IDE, in debug mode.
The same is observed with the execl() function and so on.
And when I call ./a.out from the command line,
everything works fine.
The application is written in C++.
Thank you in advance!!!

Answer 1

The point is that the debugger is trying to debug the ls command, but there are no debug symbols there. To prevent the debugger from debugging third-party processes, you need to go to Options -> Debugger -> GDB Advanced, uncheck the Debug all descendants checkbox.

Answer 2

Hangs, or do not see the answer in the output console? In general, the console is displayed or not? There is such a bug there ...
apart from that, open the system console and enter there (when "the $echo $ application hangs? what will be the answer?

Answer 3

Alexander thanks for the answer.
1.I don’t see an answer,
2.yes, the console is displayed ,
but nothing can be done in it, i.e. you can write, etc. but nothing changes
, and by the way, I get two processes there, and plus the "gdb -i mi" process of the code, I kill the gdb command from system () but the other process does not end.