[Bug c/82733] New: [8 regression] FAIL: math/test-double-y0 (with qNaN input)

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82733

            Bug ID: 82733
           Summary: [8 regression] FAIL: math/test-double-y0 (with qNaN
                    input)
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---
            Target: x86

On x86, GCC 8 r254052 caused:

FAIL: math/test-double-y0
FAIL: math/test-double-y1
FAIL: math/test-double-yn
FAIL: math/test-float-y0
FAIL: math/test-float-y1
FAIL: math/test-float-yn
FAIL: math/test-ldouble-y0
FAIL: math/test-ldouble-y1

in glibc testsuite.  The failure looks like:

testing double (without inline functions)
Failure: y0 (qNaN): Exception "Invalid operation" set
Failure: y0 (-qNaN): Exception "Invalid operation" set
Failure: y0_downward (qNaN): Exception "Invalid operation" set
Failure: y0_downward (-qNaN): Exception "Invalid operation" set
Failure: y0_towardzero (qNaN): Exception "Invalid operation" set
Failure: y0_towardzero (-qNaN): Exception "Invalid operation" set
Failure: y0_upward (qNaN): Exception "Invalid operation" set
Failure: y0_upward (-qNaN): Exception "Invalid operation" set