negativeShift error when stream operator used.

[Stefan Pantos]

In our project we have a macro something like this:

#define TRACE(level, output) do { if (level <= traceLevel) cerr << output << endl;}while(false);

when this macro is called like this:

void f(int x)
{
    TRACE(low, "Some string" << x);
}

We get the error negativeShift.

Similarly happens with BOOST_MESSAGE from the boost unit library.

Is there a suggested way to avoid this?

Thankyou.

[versat]

Thanks for your report.
I have tried to reproduce it with Cppcheck V1.83 and the latest development version but i do not get any negativeShift or other wrong message. I tried it without Cppcheck knowing the macro and with the define, but in both cases i do not get a negativeShift message.
What version of Cppcheck do you use?
Do you still get the message for the reduced example or only in a project?
If it happens with the latest version and the reduced example maybe the parameters you provide to Cppcheck matter, can you give details about that?