TRACE_EVENT expands to 3 statements

[olvaffe]

It seems TRACE_EVENT expands to 3 statements. That might not work with

if (some_condition)
    TRACE_EVENT(...);

without braces.

[Wallbraker]

You can fix that with a do { /* ...what was in TRACE_EVENT before... */ } while (false) statement.

[olvaffe]

That will fail

{
  TRACE_EVENT(...);
  function_that_is_slow_and_is_to_be_traced();
}

[Wallbraker]

Oh you are right, there really is no way around it.