Identify in the loader all read accesses which can potentially failed or result in an incorrect or absurd values.
Once listed, write a third party tool which simply open a given file and check the integrity of the entire content.
The tool should return a fatal error at the very first incorrect data.

How to consider a data is incorrect?
- if it's invalid by nature, for instance a data size which is greater than the filesize or a float32 equal to NaN, INF, IND, etc.
- if the value doesn't fit into a safe interval of range, for instance a weight < than -1000 for a given vertex
- if a string or any ID doesn't match a static requirement