gmp 5.1.2 test suite errors: clang -O4/-flto/-emit-llvm

clang-errors.log

> make check -i

... (abridged) ...

Making check in tests
==================
All 9 tests passed
==================
Making check in mpn
===================
All 43 tests passed
===================
Making check in mpz
mpz_get_d_2exp wrong on 2**54-1
result out of range, expect 0.5 <= got < 1.0
   rnd_mode = 0
   data[i]  = 54
   z    =0x3FFFFFFFFFFFFF
   got  =[00 00 00 00 00 00 F0 3F] 1
   got exp  54
/bin/sh: line 1: 28666 Abort trap: 6           ${dir}$tst
FAIL: t-get_d_2exp
======================================================================================
1 of 62 tests failed
Please report to [email protected], see http://gmplib.org/manual/Reporting-Bugs.html
======================================================================================
make: [check-TESTS] Error 1 (ignored)
Making check in mpq
===================
All 14 tests passed
===================
Making check in mpf
mpf_get_d_2exp bad on 2**54-1
result out of range, expect 0.5 <= got < 1.0
   rnd_mode = 0
   data[i]  = 54
   f    =0x0.3fffffffffffff@14
   got  =[00 00 00 00 00 00 F0 3F] 1
   got exp  54
/bin/sh: line 1: 32613 Abort trap: 6           ${dir}$tst
FAIL: t-get_d_2exp
======================================================================================
1 of 27 tests failed
Please report to [email protected], see http://gmplib.org/manual/Reporting-Bugs.html
======================================================================================
make: [check-TESTS] Error 1 (ignored)
Making check in rand
==================
All 7 tests passed
==================
Making check in misc
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All 3 tests passed
==================
Making check in cxx
===================
All 20 tests passed
===================