SIMION®
The field and particle trajectory simulator
Industry standard charged particle optics software
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SIMION 8.0 Issues/Bugs/Enhancements

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Issue I157 2006-02-02 [compile,70,resolved]
  Title: other reserved variables not initialized in debugger.
  Affects: SIMION 7.0 up to 7.1beta6.
  reserved_vars[2] is not always
  initialized to a four element array when the third element is
  accessed.
  To reproduce in SIMION 7.0:
    Create a terminate segment with the code
      "1 STO retain_changed_potentials".
    On the main SIMION screen, open the SIMION debugger and run the
      terminate segment.  When this command is called, CMD_STO_VAR
      accesses reserved_vars[2][3], and reserved_vars[2] points to
      current_rerun, which is a single double.
  This may corrupt memory, but it did not seem to cause a crash.
  The error does not seem to occur when flying ions, in which case
  reserved_vars[2] is set to an appropriate memory location.
  The error probably only affects the debugger and occurs only in
  rare circumstances when accessing trajectory_image_control,
  retain_changed_potentials, and update_pe_surface variables.
  2006-02-03 - Resolved in 7.1beta7.

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