[sqlite] How to verify sqlite file?

[Charlie Li]

Is there any way to verify a file is sqlite3 file? When I tried to open  a 
non-sqlite file by  sqlite_open(), the system crash. I checked  the source 
codes and found no file type checking.  The final trace  is toward to page.c 
file.  How to  revise code to make   sqlite more reliable.
  
  Charlie 
  
                
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