gmp 6.2.0 test failures on sparc64-solaris10

[Bruno Haible]

Hi,

GMP 6.2.0, on a Sparc64/Solaris 10 machine, has 3 test failures
when build with Solaris 'cc'.

$ ../configure CC="cc -xarch=generic64 -O"
$ gmake
...
$ gmake check
...
============================================================================
Testsuite summary for GNU MP 6.2.0
============================================================================
# TOTAL: 50
# PASS:  47
# SKIP:  0
# XFAIL: 0
# FAIL:  3
# XPASS: 0
# ERROR: 0
============================================================================
See tests/mpn/test-suite.log
Please report to gmp-bugs at gmplib.org, see https://gmplib.org/manual/Reporting-Bugs.html
============================================================================

$ cat tests/mpn/test-suite.log
============================================
   GNU MP 6.2.0: tests/mpn/test-suite.log
============================================

# TOTAL: 50
# PASS:  47
# SKIP:  0
# XFAIL: 0
# FAIL:  3
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

FAIL: t-gcd_11
==============

FAIL t-gcd_11 (exit status: 24)

FAIL: t-gcd_22
==============

FAIL t-gcd_22 (exit status: 128)

FAIL: t-gcdext_1
================

FAIL t-gcdext_1 (exit status: 2)


When built with GCC, on the other hand, on the same machine, all tests pass.
$ ../configure CC="gcc -m64 -O2"

Bruno