Cppcheck doesn't treat bool as a C++ keyword when using std=C++11

[Sebastian Cabot]

Hello,

I am trying to check my code that was written in C++. I pass the std=c++11 flag to cppcheck (I am using the GUI) but I keep getting: Skipping configuration 'bool' since the value of 'bool' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.

Any ideas on how to over come this? This information warning makes me think that mavbe other C++11 features are not properly checked as well.

Thank you
Sebastian

[Sebastian Cabot]

Hello.
I could not reproduce this on a small test case.
Apparently there are some system includes that define bool.
I am sorry for not thinking about checking it this way before posting.

Thank you very much

On Tue, Mar 26, 2019 at 6:23 PM Sebastian Cabot scabot@users.sourceforge.net wrote:

Hello,

I am trying to check my code that was written in C++. I pass the std=c++11
flag to cppcheck (I am using the GUI) but I keep getting: Skipping
configuration 'bool' since the value of 'bool' is unknown. Use -D if you
want to check it. You can use -U to skip it explicitly.

Any ideas on how to over come this? This information warning makes me
think that mavbe other C++11 features are not properly checked as well.

Thank you
Sebastian

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Cppcheck doesn't treat bool as a C++ keyword when using std=C++11
https://sourceforge.net/p/cppcheck/discussion/general/thread/7bece648a0/?limit=25#653c

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[versat]

What version of Cppcheck are you using?
Does it work when you change the std to c++14?
Can you provide some minimal example code piece where that issue happens?

[Sebastian Cabot]

Hello.
I could not reproduce this on a small test case.
Apparently there are some system includes that define bool.
I am sorry for not thinking about checking it this way before posting.

Thank you very much

[versat]

Thanks for the response.
Maybe it is useful to exclude the system includes or not adding them to the includes. It is recommended for Cppcheck analysis to not use standard/system includes but use the library configurations that come with Cppcheck.

I have tried to reproduce the message that you got regarding unknown configuration of "bool" and i got it for example when using code like this:

#ifdef bool
#endif

void f(bool a)
{}

Cppcheck output:

$ ./cppcheck --enable=all bool.cpp
Checking bool.cpp ...
[bool.cpp:4]: (information) Skipping configuration 'bool' since the value of 'bool' is unknown. Use -D if you want to check it. You can use -U to skip it explicitly.
Checking bool.cpp: bool...
[bool.cpp:4]: (style) The function 'f' is never used.

If you know that bool should always be bool you can call Cppcheck with -Dbool=bool:

$ ./cppcheck --enable=all -Dbool=bool bool.cpp
Checking bool.cpp ...
Checking bool.cpp: bool=bool...
[bool.cpp:4]: (style) The function 'f' is never used.

I you have further questions or find out more about this case it would be great if you let us know :)