On Thu, 27 Oct 2016, Bernd Edlinger wrote:

> Hi,
> 
> by code reading I became aware that libgcc can call count_leading_zeros
> in certain cases which can give undefined results.  This happens on
> signed int128 -> float or double conversions, when the int128 is in the range
> INT64_MAX+1 to UINT64_MAX.

I'd expect testcases added to the testsuite that exercise this case at 
runtime, if not already present.

-- 
Joseph S. Myers
jos...@codesourcery.com

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