[tlbuild] mendexk test failure on Cygwin

[Peter Breitenlohner]

On Thu, 8 Jan 2015, Ken Brown wrote:

> The mendexk test fails on Cygwin as follows:
>
> $ cat ~/src/texlive/test.x86_64/Work/texk/mendexk/test-suite.log
> ==============================================
>    mendex (TeX Live) 2.6f: ./test-suite.log
> ==============================================
>
> # TOTAL: 1
> # PASS:  0
> # SKIP:  0
> # XFAIL: 0
> # FAIL:  1
> # XPASS: 0
> # ERROR: 0
>
> .. contents:: :depth: 2
>
> FAIL: tests/mendex
> ==================
>
> This is mendex version 2.6f [14-Aug-2009] (utf8.euc) (TeX Live 2015/dev).
> Scanning input file ../../../texk/mendexk/tests/foo.idx....done (3 entries
> accepted, 0 rejected).
> 3 entries accepted, 0 rejected.
> Sorting index....done(0 comparisons).
> Sorting pages....done(4 comparisons).
> Making index file....done.
> 0 warnings, written in foo.ilg1.
> Output written in foo.ind1.
> 3c3
> <   \item foo, \mac{1}, 1
> ---
> >   \item foo,
>
>
> A bisection shows that the problem starts with revision 34287.  Specifically,
> reverting the change to texk/mendexk/fwrite.c in that revision fixes the
> problem.  Let me know what further information I can provide to help track this
> down.

Hi Ken and Marc,

failure for both 32 and 64 bit?  Which version of gcc?

Does texk/mendexk/c-auto.h define HAVE___VA_ARGS__?

Regards
Peter Breitenlohner <peb at mppmu.mpg.de>