From mboxrd@z Thu Jan  1 00:00:00 1970
From: Cyril Hrubis <chrubis@suse.cz>
Date: Wed, 4 May 2016 17:55:31 +0200
Subject: [LTP] [PATCH V2 6/9] testcases/lib: Add tst_random decmical
 integer generator
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Hi!
> Looks like we just need to compare with ( *end != '\0' ), as argv[1] or 
> argv[2] can't be '\0' (NULL) as it has been filtered by (argc <2 || argc > 3).
> 
> And i just verified this with this debug line: 
> 
>    printf("end = %p, *end = %c\n", end, *end);

What will happen when you call:

tst_random "" ""

Or more realistic case when FOO is not defined and you do:

tst_random "$FOO"

Note that empty string in C is an array with first element set to 0.

-- 
Cyril Hrubis
chrubis@suse.cz