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 Type and range checking
 =======================
 
      _Warning:_ In this release, the GDB commands for type and range
      checking are included, but they do not yet have any effect.  This
      section documents the intended facilities.
 
    Some languages are designed to guard you against making seemingly
 common errors through a series of compile- and run-time checks.  These
 include checking the type of arguments to functions and operators, and
 making sure mathematical overflows are caught at run time.  Checks such
 as these help to ensure a program's correctness once it has been
 compiled by eliminating type mismatches, and providing active checks
 for range errors when your program is running.
 
    GDB can check for conditions like the above if you wish.  Although
 GDB does not check the statements in your program, it can check
 expressions entered directly into GDB for evaluation via the `print'
 command, for example.  As with the working language, GDB can also
 decide whether or not to check automatically based on your program's
 source language.   Supported languages Support, for the default
 settings of supported languages.
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