About fwrite(s, 0, 1, fp)

[Ulrich Drepper]

hjl@lucon.org (H.J. Lu) writes:

> What should fwrite(s, 0, 1, fp) return? VSX-PCT expects 0. What
> does ANSI C say on it? Solaris 2.5.1/2.6 and HP-UX 10.20 return
> 0. Should we change it to 0?

ISO C says:

The fwrite function returns the number of elements successfully
written, which will be less then nmemb only if a write error is
encountered.

I.e., returning 1 is correct.  There was no write error.  Another bug
in the testsuite.

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