cgcccompiler-warningsassert

assert() with message

I saw somewhere assert used with a message in the following way:

assert(("message", condition));

This seems to work great, except that gcc throws the following warning:

warning: left-hand operand of comma expression has no effect

How can I stop the warning?

Solution

  • Use -Wno-unused-value to stop the warning; (the option -Wall includes -Wunused-value).

    I think even better is to use another method, like

    assert(condition && "message");