I manage my structures in C files, the header might look like this:

#pragma pack(0)

typedef struct
    short important_value;
    char  _A[2]; // unknown
    int   interesting_value;

I loaded this into IDA via Ctrl+F9. Now I find out more about the structure, seeing that _A contains short imaginary_value.

When I try to reload this in IDA via Ctrl+F9, nothing happens. When I delete the structure in IDA, parse the C file and re-create the structure, I see the new structure, however all instances of STRUCT in the database are deleted.

So the question is, how do I reload the structure without removing all instances from the database.

1 Answer 1


Go to the Local Types (View->Open Subviews->Local Types or Shift + F1) window and then edit it from there by right clicking and clicking on edit on your structure's entry on the list.

  • 2
    Is there a way to completely remove the types there. Not just #deleted? Jun 3, 2013 at 19:46
  • @heinrich5991 Did you find a way to remove the #deleted entries?
    – crush
    Apr 3, 2014 at 19:00
  • @crush Unfortunately I didn't, I also stopped reloading the structures at all because it broke some stuff, like forgetting that variables are of a certain type. Apr 4, 2014 at 15:03

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