UnnamedFunction, UnnamedTimedFunction
Labels assigned to functions that cannot be identified, owing to insufficient information in the debug data. In the case of some timed COM functions, the label appears as UnnamedTimedFunction. An offset is appended to the label that represents the relative virtual address of the function from the start of the original module to its occurrence. For example, UnnamedTimedFunction@0x107d38.
By default, the UnnamedFunction* and UnnamedTimed* filters are used to hide these functions, but their time continues to be distributed to their callers.
(C) Copyright IBM Corporation 1992, 2010.