Fix nptl/tst-cancel7 for non-bash shells

[Joseph S. Myers]

On Thu, 25 Oct 2012, David Miller wrote:

> For reference, this is the dash fix:
> 
> http://git.kernel.org/?p=utils/dash/dash.git;a=commitdiff;h=ee5cbe9fd6bc02f31b4d955606288de36c3d4eab

That this isn't needed with some dash versions may be relevant 
information, but it doesn't mean the patch is wrong.  The patch is only 
wrong, and this is only a dash bug, if POSIX *requires* the implicit exec 
in this case, rather than it being an optimization, and I didn't see such 
a requirement in a quick check - if there is such a requirement, what / 
where is the wording?

-- 
Joseph S. Myers
joseph@codesourcery.com