1. Return values

  • Posted by rodoval Sep 07, 2008
  • 862 views

I have noticed that the function system_exec do not get the right values returned by external programs (exit status) in Linux, but multiplied by 256. Example: 

file prog1.ex: 
abort(1) 
 
file prog2.ex: 
? system_exec("exu prog1.ex", 2) 
 
$ exu prog2.ex 
256

If "abort(2)", the reported value is 512, etc.

Is it normal? It happens in all platforms? (I think no).

Regards, Rodolfo.

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