bug#12206: test-parse-datetime regression test failure with glibc-2.16.0

[Bruce Dubbs]

Paul Eggert wrote:
> On 08/16/2012 10:30 PM, Bruce Dubbs wrote:
> > When we run the tests, we can change our procedures to set any TZ needed.
>
> Could you please try it with TZ='EST5EDT,M3.2.0,M11.1.0'?
> If that works, we can change the test program to use that
> TZ value by default.


I found two issues.

cd gnulib-tests
make check TESTS=test-parse-datetime VERBOSE=yes

fails

rm /etc/localtime  (I have this normally set to GMT for testing)
make check TESTS=test-parse-datetime VERBOSE=yes

passes

restoring /etc/localtime

export TZ='EST5EDT,M3.2.0,M11.1.0'
make check TESTS=test-parse-datetime VERBOSE=yes

passes.

We can work with this, but you may want to adjust test-parse-datetime to 
make it more robust.

Setting TZ to GMT, America/Chicago, or EST5EDT fails
Setting TX to UCT0 passes.

BTW, I've never seen the M parameters in TZ before.  What do they do?

  -- Bruce