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gdb: Lazy Strings In Python

 
 23.2.2.32 Python representation of lazy strings
 ...............................................
 
 A "lazy string" is a string whose contents is not retrieved or encoded
 until it is needed.
 
    A 'gdb.LazyString' is represented in GDB as an 'address' that points
 to a region of memory, an 'encoding' that will be used to encode that
 region of memory, and a 'length' to delimit the region of memory that
 represents the string.  The difference between a 'gdb.LazyString' and a
 string wrapped within a 'gdb.Value' is that a 'gdb.LazyString' will be
 treated differently by GDB when printing.  A 'gdb.LazyString' is
 retrieved and encoded during printing, while a 'gdb.Value' wrapping a
 string is immediately retrieved and encoded on creation.
 
    A 'gdb.LazyString' object has the following functions:
 
  -- Function: LazyString.value ()
      Convert the 'gdb.LazyString' to a 'gdb.Value'.  This value will
      point to the string in memory, but will lose all the delayed
      retrieval, encoding and handling that GDB applies to a
      'gdb.LazyString'.
 
  -- Variable: LazyString.address
      This attribute holds the address of the string.  This attribute is
      not writable.
 
  -- Variable: LazyString.length
      This attribute holds the length of the string in characters.  If
      the length is -1, then the string will be fetched and encoded up to
      the first null of appropriate width.  This attribute is not
      writable.
 
  -- Variable: LazyString.encoding
      This attribute holds the encoding that will be applied to the
      string when the string is printed by GDB.  If the encoding is not
      set, or contains an empty string, then GDB will select the most
      appropriate encoding when the string is printed.  This attribute is
      not writable.
 
  -- Variable: LazyString.type
      This attribute holds the type that is represented by the lazy
      string's type.  For a lazy string this is a pointer or array type.
      To resolve this to the lazy string's character type, use the type's
      'target' method.  Types In Python.  This attribute is not
      writable.
 

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