[Bug libgcc/78067] liggcc2 calls count_leading_zero with 0

[edlinger at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78067

--- Comment #3 from Bernd Edlinger <edlinger at gcc dot gnu.org> ---
Author: edlinger
Date: Thu Nov  3 12:52:19 2016
New Revision: 241817

URL: https://gcc.gnu.org/viewcvs?rev=241817&root=gcc&view=rev
Log:
2016-11-03  Bernd Edlinger  <bernd.edlin...@hotmail.de>

        PR libgcc/78067
        * libgcc2.c (__floatdisf, __floatdidf): Avoid undefined results from
        count_leading_zeros.

testsuite:
2016-11-03  Bernd Edlinger  <bernd.edlin...@hotmail.de>

        PR libgcc/78067
        * gcc.dg/torture/fp-int-convert.h: Add more conversion tests.

Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/torture/fp-int-convert.h
    trunk/libgcc/ChangeLog
    trunk/libgcc/libgcc2.c