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User forums => Using Code::Blocks => Topic started by: wanggaoteng on March 15, 2019, 01:37:16 pm

Title: A problem when running valgrind in codeblocks
Post by: wanggaoteng on March 15, 2019, 01:37:16 pm

Hi, My codeblocks has been installed in lubuntu 16.04, so there is a "Valgrind" menu in the toolbar, as picture 1 illustrated.
When my code has not contains the user input, namely, no scanf() function, the "Valgrind/Run MemCheck" works very well.
But if the code contains the user input (i.e., scanf), when clicking "Valgrind/Run MemCheck", it makes codeblocks running forever, nothing to give back and not stop, and it seems that the valgrind waits for the user input, but I can't find the way to enter user input for valgrind in codeblocks.
Is there any way to fix this problem?

Title: Re: A problem when running valgrind in codeblocks
Post by: oBFusCATed on March 15, 2019, 02:40:03 pm

Not sure. Probably the valgrind plugin should be modified to do something similar to the debugger plugin, but I'm not even sure that valgrind supports redirecting stdin/out to something else then the current console.

Title: Re: A problem when running valgrind in codeblocks
Post by: wanggaoteng on March 17, 2019, 09:10:54 am

Quote from: oBFusCATed on March 15, 2019, 02:40:03 pm

Not sure. Probably the valgrind plugin should be modified to do something similar to the debugger plugin, but I'm not even sure that valgrind supports redirecting stdin/out to something else then the current console.

Hi, oBFusCATed, thanks for replying.
Finally, after search many webs, I find that there is a way to use valgrind in the terminal:
1. gcc -g test.c
2. valgrind --tool=memcheck --leak-check=yes --show-reachable=yes ./a.out
Then the code (test.c) runs, so I can enter the user input. After completes the user input, then valgrind feedback the result in the comsole.