Bug in users command
John F Haugh II
jfh at rpp386.cactus.org
Sun Jan 20 06:34:22 AEST 1991
In article <18928:Jan1916:26:3291 at kramden.acf.nyu.edu> brnstnd at kramden.acf.nyu.edu (Dan Bernstein) writes:
>No. Unless I'm mistaken, the objects being passed in are pointers to
>arrays of char, while the objects expected are pointers to char. There
>is no implicit conversion that justifies this, though undoubtedly it
>works on most machines.
How does a pointer to an unknown number of characters differ from a
pointer to a known number of characters when passed as an argument?
qsort() invokes scmp() with the pointer to an array of UT_NAMESIZE
characters. scmp() is expecting a pointer to a character, which is
coincidentally the same type object as "char a[UT_NAMESIZE]" since
any "array of type X" type parameters are converted to "pointer to
type X object" parameters. I believe this is plainly specified
both by ANSI-C and K&R-Classic.
>Anyway, the 200-user limit is purely silly.
Agreed.
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