+++ This bug was initially created as a clone of Bug #1623533 +++ The full test outputs are: =====FAIL: math/test-ildouble-fma.out===== testing long double (inline functions) Failure: Test: fma_downward (inf, inf, -max_value) Result: is: qNaN should be: inf inf Failure: Test: fma_downward (-inf, -inf, -max_value) Result: is: qNaN should be: inf inf Failure: Test: fma_upward (inf, -inf, max_value) Result: is: qNaN should be: -inf -inf Failure: Test: fma_upward (-inf, inf, max_value) Result: is: qNaN should be: -inf -inf Test suite completed: 1458 test cases plus 0 tests for exception flags and 0 tests for errno executed. 4 errors occurred. =====FAIL: math/test-ldouble-fma.out===== testing long double (without inline functions) Failure: fma_downward (inf, inf, -max_value): Exception "Invalid operation" set Failure: fma_downward (inf, inf, -max_value): Exception "Overflow" set Failure: Test: fma_downward (inf, inf, -max_value) Result: is: qNaN should be: inf inf Failure: fma_downward (inf, -inf, -max_value): Exception "Overflow" set Failure: fma_downward (-inf, inf, -max_value): Exception "Overflow" set Failure: fma_downward (-inf, -inf, -max_value): Exception "Invalid operation" set Failure: fma_downward (-inf, -inf, -max_value): Exception "Overflow" set Failure: Test: fma_downward (-inf, -inf, -max_value) Result: is: qNaN should be: inf inf Failure: fma_upward (inf, inf, max_value): Exception "Overflow" set Failure: fma_upward (inf, -inf, max_value): Exception "Invalid operation" set Failure: fma_upward (inf, -inf, max_value): Exception "Overflow" set Failure: Test: fma_upward (inf, -inf, max_value) Result: is: qNaN should be: -inf -inf Failure: fma_upward (-inf, inf, max_value): Exception "Invalid operation" set Failure: fma_upward (-inf, inf, max_value): Exception "Overflow" set Failure: Test: fma_upward (-inf, inf, max_value) Result: is: qNaN should be: -inf -inf Failure: fma_upward (-inf, -inf, max_value): Exception "Overflow" set Test suite completed: 1458 test cases plus 1454 tests for exception flags and 1454 tests for errno executed. 16 errors occurred. Also seen on rawhide.
Latest upstream update is here: https://sourceware.org/ml/libc-alpha/2018-09/msg00409.html There is still no patch.
Upstream has XFAILed these tests in this commit: commit ecdacd34a2ac3b6d5a529ff218b29261d9d98a7a Author: Tulio Magno Quites Machado Filho <tuliom.com> Date: Mon Jan 14 17:54:44 2019 -0200 Add XFAIL_ROUNDING_IBM128_LIBGCC to more fma() tests Ignore 112 errors in math/test-ldouble-fma and math/test-ildouble-fma when IBM 128-bit long double used. These errors are caused by spurious overflows from libgcc. * math/libm-test-fma.inc (fma_test_data): Set XFAIL_ROUNDING_IBM128_LIBGCC to more tests.
A reduced version of the 2.29 patch was backported to glibc 2.28 as commit: commit b297581acb66f80b513996c1580158b0fb12d469 Author: Tulio Magno Quites Machado Filho <tuliom.com> Date: Mon Jan 14 17:54:44 2019 -0200 Add XFAIL_ROUNDING_IBM128_LIBGCC to more fma() tests Ignore 16 errors in math/test-ldouble-fma and 4 errors in math/test-ildouble-fma when IBM 128-bit long double used. These errors are caused by spurious overflows from libgcc. * math/libm-test-fma.inc (fma_test_data): Set XFAIL_ROUNDING_IBM128_LIBGCC to more tests. Signed-off-by: Tulio Magno Quites Machado Filho <tuliom.com> (cherry picked from commit ecdacd34a2ac3b6d5a529ff218b29261d9d98a7a)
Verified, math/test-ildouble-fma, math/test-ldouble-fma tests pass in glibc-2.28-44.el8
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2019:3513