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Re: [3/6] nvptx testsuite patches: stdio


On 10/21/2014 09:01 PM, Mike Stump wrote:
On Oct 21, 2014, at 7:17 AM, Bernd Schmidt <bernds@codesourcery.com>
wrote:
Some tests use stdio functions which are unavaiable with the
cut-down newlib I'm using for ptx testing. I'm somewhat uncertain
what to do with these; they are by no means the only unavailable
library functions the testsuite tries to use (signal is another
example). Here's a patch which deals with parts of the problem, but
I wouldn't mind leaving this one out if it doesn't seem
worthwhile.

So, it is nice if an entire newlib port can be done, then, you don’t
have to worry about subsets of it.

That's probably true, but not all functionality can be supported - there's no way to do things like signal or setjmp on this target. Rather than compile in stuff that doesn't work I thought it better to have link errors.

If you want to try your hand at removing stdio in some fashion, you
can try, I am skeptical that there is a meaningful way to do that and
it seems larger and harder then the patch you have.  The usual
fashion I would recommend would be a stub library for testing that
simply disappears such calls as uninteresting.  int fpritnf (…) {
return 0; } would go a long way.  For test cases that someone care
about what fprintf actually does, those can be marked as stdio and
likely, those would be a far smaller set to so mark.

Hmm, that seems like an ide, a nvptx libteststubs.a. That might clean up additional noise from the results.


Bernd


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