ungetc failures (was: snapshot 3 in preparation for 1.4.13)

[Eric Blake]

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According to Gary V. Vaughan on 2/23/2009 7:39 PM:

Hi Gary,

Thanks for your tests; I'll respond to issues individually.

>> On some older platforms, the gnulib tests test-fseeko and test-ftello
>> fail, due to a bug in the platforms' ungetc behavior.  Without a gnulib
>> replacement for ungetc, this won't be fixed, but it does not affect m4
>> behavior.
> 
> Shouldn't we disable those tests when it's possible to detect the ungetc bug
> at configure time?

Even though I'm not motivated to write an ungetc replacement at the moment
(in part because it would be hard to do without access to a system with
buggy ungetc), maybe it is worth writing a simple ungetc.m4 that at least
sets a config.h flag to make it easier to silence these known test
failures.  I'll see what I can do on that front.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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