bitbake: lib/bb: warning when the debug message is invalid

There are many messed up calls for the debug log,
so is better to warm about this as they will not work
as expected.

The level need to be an integer and the msg a string.

(Bitbake rev: c1d9c1d25ce36848040dc0ce182835e497ccbb82)

Signed-off-by: Jose Quaresma <jose.quaresma@foundries.io>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/__init__.py

@@ -60,6 +60,10 @@ class BBLoggerMixin(object):
                 return
             if loglevel < bb.msg.loggerDefaultLogLevel:
                 return
+
+        if not isinstance(level, int) or not isinstance(msg, str):
+            mainlogger.warning("Invalid arguments in bbdebug: %s" % repr((level, msg,) + args))
+
         return self.log(loglevel, msg, *args, **kwargs)
 
     def plain(self, msg, *args, **kwargs):