[Bug regression/111709] New: [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[Bug regression/111709] New: [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

            Bug ID: 111709
           Summary: [13 Regression] Miscompilation of
                    sysdeps/ieee754/dbl-64/s_fma.c
           Product: gcc
           Version: 13.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
          Assignee: unassigned at gcc dot gnu.org
          Reporter: danglin at gcc dot gnu.org
  Target Milestone: ---
              Host: hppa*-*-linux*
            Target: hppa*-*-linux*
             Build: hppa*-*-linux*

Created attachment 56056
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56056&action=edit
Preproccessed source generated using gcc-12

This fail occurs with gcc version 13.1.0 (Debian 13.1.0-8) in the .

dave@mx3210:~/gnu/glibc/objdir$ make test t=math/test-double-fma
make -r PARALLELMFLAGS="" -C ../glibc objdir=`pwd` test
make[1]: Entering directory '/home/dave/gnu/glibc/glibc'
make subdir=math -C math/ ..=../
/home/dave/gnu/glibc/objdir/math/test-double-fma.out
make[2]: Entering directory '/home/dave/gnu/glibc/glibc/math'
gcc -o /home/dave/gnu/glibc/objdir/math/test-double-fma -nostdlib -nostartfiles
    -Wl,-z,relro  /home/dave/gnu/glibc/objdir/csu/crt1.o
/home/dave/gnu/glibc/objdir/csu/crti.o `gcc  --print-file-name=crtbegin.o`
/home/dave/gnu/glibc/objdir/math/test-double-fma.o
/home/dave/gnu/glibc/objdir/support/libsupport_nonshared.a
/home/dave/gnu/glibc/objdir/math/libm-test-support-double.o
/home/dave/gnu/glibc/objdir/math/libm.so.6  -Wl,-dynamic-linker=/lib/ld.so.1
-Wl,-rpath-link=/home/dave/gnu/glibc/objdir:/home/dave/gnu/glibc/objdir/math:/home/dave/gnu/glibc/objdir/elf:/home/dave/gnu/glibc/objdir/dlfcn:/home/dave/gnu/glibc/objdir/nss:/home/dave/gnu/glibc/objdir/nis:/home/dave/gnu/glibc/objdir/rt:/home/dave/gnu/glibc/objdir/resolv:/home/dave/gnu/glibc/objdir/mathvec:/home/dave/gnu/glibc/objdir/support:/home/dave/gnu/glibc/objdir/crypt:/home/dave/gnu/glibc/objdir/nptl
-lgcc -Wl,--as-needed -lgcc_s  -Wl,--no-as-needed
/home/dave/gnu/glibc/objdir/libc.so.6
/home/dave/gnu/glibc/objdir/libc_nonshared.a -Wl,--as-needed
/home/dave/gnu/glibc/objdir/elf/ld.so -Wl,--no-as-needed -lgcc -Wl,--as-needed
-lgcc_s  -Wl,--no-as-needed `gcc  --print-file-name=crtend.o`
/home/dave/gnu/glibc/objdir/csu/crtn.o
env GCONV_PATH=/home/dave/gnu/glibc/objdir/iconvdata
LOCPATH=/home/dave/gnu/glibc/objdir/localedata LC_ALL=C  
/home/dave/gnu/glibc/objdir/elf/ld.so.1 --library-path
/home/dave/gnu/glibc/objdir:/home/dave/gnu/glibc/objdir/math:/home/dave/gnu/glibc/objdir/elf:/home/dave/gnu/glibc/objdir/dlfcn:/home/dave/gnu/glibc/objdir/nss:/home/dave/gnu/glibc/objdir/nis:/home/dave/gnu/glibc/objdir/rt:/home/dave/gnu/glibc/objdir/resolv:/home/dave/gnu/glibc/objdir/mathvec:/home/dave/gnu/glibc/objdir/support:/home/dave/gnu/glibc/objdir/crypt:/home/dave/gnu/glibc/objdir/nptl
/home/dave/gnu/glibc/objdir/math/test-double-fma  >
/home/dave/gnu/glibc/objdir/math/test-double-fma.out; \
../scripts/evaluate-test.sh math/test-double-fma $? false false >
/home/dave/gnu/glibc/objdir/math/test-double-fma.test-result
make[2]: Leaving directory '/home/dave/gnu/glibc/glibc/math'
FAIL: math/test-double-fma
original exit status 1
testing double (without inline functions)
Failure: fma (-0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, -0x4p-1076):
Exception "Underflow" set
Failure: fma (0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, 0x4p-1076):
Exception "Underflow" set
Failure: fma_downward (-0x4p-1076, 0x8.8p-4, -0x3.ffffffffffffcp-1024):
Exception "Underflow" set
Failure: fma_downward (-0x7.ffffffffffffp-1024, 0x8.0000000000008p-4,
-0x4p-1076): Exception "Underflow" set
Failure: Test: fma_upward (-0x3.ffffffffffffep-712, 0x3.ffffffffffffep-276,
0x3.fffffc0000ffep-984)
Result:
 is:          1.8348707892449242e-296   0x1.7ffffe00007ffp-983
 should be:   1.8348707892449245e-296   0x1.7ffffe0000800p-983
 difference:  2.7161546124355486e-312   0x0.0008000000000p-1022
 ulp       :  1.0000
 max.ulp   :  0.0000
Failure: fma_upward (0x4p-1076, 0x8.8p-4, 0x3.ffffffffffffcp-1024): Exception
"Underflow" set
Failure: fma_upward (0x7.ffffffffffffp-1024, 0x8.0000000000008p-4, 0x4p-1076):
Exception "Underflow" set

Test suite completed:
  2524 test cases plus 2520 tests for exception flags and
    2520 tests for errno executed.
  7 errors occurred.
make[1]: Leaving directory '/home/dave/gnu/glibc/glibc'

Test doesn't fail with gcc-12.

Similar fails:
FAIL: math/test-double-ldouble-fma
FAIL: math/test-float32x-float64-fma
FAIL: math/test-float32x-fma
FAIL: math/test-float64-fma
FAIL: math/test-ldouble-fma

If s_fma.c is compiled with gcc-12, these fma fails don't occur.

This is glibc BZ 30664.

This is compile command for s_fma.c:

gcc-13 ../sysdeps/ieee754/dbl-64/s_fma.c -c -std=gnu11 -fgnu89-inline  -g -O2
-Wall -Wwrite-strings -Wundef -Werror -fmerge-all-constants -frounding-math
-fno-stack-protector -fno-common -Wp,-U_FORTIFY_SOURCE -Wstrict-prototypes
-Wold-style-definition -fno-math-errno    -fPIC   -fno-builtin-fmal
-fno-builtin-fmaf32x -fno-builtin-fmaf64      -DNO_LONG_DOUBLE -I../include
-I/home/dave/gnu/glibc/objdir/math  -I/home/dave/gnu/glibc/objdir 
-I../sysdeps/unix/sysv/linux/hppa  -I../sysdeps/hppa/nptl 
-I../sysdeps/unix/sysv/linux/include -I../sysdeps/unix/sysv/linux 
-I../sysdeps/nptl  -I../sysdeps/pthread  -I../sysdeps/gnu 
-I../sysdeps/unix/inet  -I../sysdeps/unix/sysv  -I../sysdeps/unix 
-I../sysdeps/posix  -I../sysdeps/hppa/hppa1.1  -I../sysdeps/wordsize-32 
-I../sysdeps/ieee754/flt-32  -I../sysdeps/ieee754/dbl-64  -I../sysdeps/hppa/fpu
 -I../sysdeps/hppa  -I../sysdeps/ieee754  -I../sysdeps/generic  -I.. -I../libio
-I. -nostdinc -isystem /usr/lib/gcc/hppa-linux-gnu/13/include -isystem
/usr/include -D_LIBC_REENTRANT -include
/home/dave/gnu/glibc/objdir/libc-modules.h -DMODULE_NAME=libm -include
../include/libc-symbols.h  -DPIC -DSHARED     -DTOP_NAMESPACE=glibc -o
/home/dave/gnu/glibc/objdir/math/s_fma.os -MD -MP -MF
/home/dave/gnu/glibc/objdir/math/s_fma.os.dt -MT
/home/dave/gnu/glibc/objdir/math/s_fma.os

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #1 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 56057
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56057&action=edit
Preprocessed source generated using gcc-13

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 56058
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56058&action=edit
.s file for s_fma.c generated using gcc-12

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 56059
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56059&action=edit
.s file for s_fma.c generated using gcc-13

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #4 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 56060
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56060&action=edit
non pic .s file for s_fma.c generated using gcc-12 without debug info

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #5 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 56061
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56061&action=edit
non pic .s file for s_fma.c generated using gcc-13 without debug info

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #6 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 56062
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=56062&action=edit
Diff between s_fma_12.s and s_fma_13.s

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

John David Anglin <danglin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jsm28 at gcc dot gnu.org

--- Comment #7 from John David Anglin <danglin at gcc dot gnu.org> ---
Joseph, is there a way to simplify the glibc test to the failing cases?

Maybe you have a clue as to what has changed.

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Typically these sorts of issues result from floating-point operations 
being moved past environment manipulation (fesetround, feupdateenv, 
feholdexcept, etc.) - in either direction.  This might be a compiler 
issue, or it might well be a bug in the glibc function implementation 
(insufficient use of math_opt_barrier / math_force_eval to prevent such 
movement).  If the latter, make sure to fix it in all similar 
implementations of fma functions, not just the dbl-64 one.

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |13.3

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Does it work on trunk?

[Bug regression/111709] [13 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[dave.anglin at bell dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #10 from dave.anglin at bell dot net ---
On 2023-10-06 3:50 a.m., rguenth at gcc dot gnu.org wrote:
> Does it work on trunk? 
No.  Test results with gcc trunk are identical to with Debian gcc-13.

Tried just rebuilding s_fma.c, and a full build and check.

[Bug regression/111709] [13/14 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #11 from John David Anglin <danglin at gcc dot gnu.org> ---
This is proving difficult to bisect due to _Floatn issues.

I know commit b85e79dce149df68b92ef63ca2a40ff1dfa61396 is good and
commit b939a5cc4143908ddda4b85a848c313136ff6e0c is bad.

The following glibc change breaks gcc build when BASE-VER changes to 13.
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=3e5760fcb48528d48deeb60cb885a97bb731160c

If I change __GNUC_PREREQ to 13, 1, I hit errors like:

In file included from
/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/incl
ude/cmath:45,
                 from
/home/dave/gnu/gcc/objdir/hppa-linux-gnu/libstdc++-v3/incl
ude/complex:44,
                 from
../../../../../gcc/libstdc++-v3/src/c++98/complex_io.cc:25
:
/usr/include/math.h:1395:19: error: redefinition of ‘struct
__iseqsig_type<float
>’
 1395 | template<> struct __iseqsig_type<_Float32>
      |                   ^~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/math.h:1366:19: note: previous definition of ‘struct
__iseqsig_type
<float>’
 1366 | template<> struct __iseqsig_type<float>

There are a lot of VRP changes for floats in the range that I haven't been able
to bisect.
      |                   ^~~~~~~~~~~~~~~~~~~~~

[Bug regression/111709] [13/14 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

John David Anglin <danglin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |aldyh at redhat dot com,
                   |                            |jeffreyalaw at gmail dot com

--- Comment #12 from John David Anglin <danglin at gcc dot gnu.org> ---
The miscompilation of s_fma.c was introduced by the following change:

dave@atlas:~/gnu/gcc/gcc$ git bisect good
8c99e307b20c502e55c425897fb3884ba8f05882 is the first bad commit
commit 8c99e307b20c502e55c425897fb3884ba8f05882
Author: Aldy Hernandez <aldyh@redhat.com>
Date:   Sat Jun 25 18:58:02 2022 -0400

    Convert DOM to use Ranger rather than EVRP

    [Jeff, this is the same patch I sent you last week with minor tweaks
    to the commit message.]

    [Despite the verbosity of the message, this is actually a pretty
    straightforward patch.  It should've gone in last cycle, but there
    was a nagging regression I couldn't get to until after stage1
    had closed.]

    There are 3 uses of EVRP in DOM that must be converted.
    Unfortunately, they need to be converted in one go, so further
    splitting of this patch would be problematic.

    There's nothing here earth shattering.  It's all pretty obvious in
    retrospect, but I've added a short description of each use to aid in
    reviewing:

    * Convert evrp use in cprop to ranger.

      This is easy, as cprop in DOM was converted to the ranger API last
      cycle, so this is just a matter of using a ranger instead of an
      evrp_range_analyzer.

    * Convert evrp use in threader to ranger.

      The idea here is to use the hybrid approach we used for the initial
      VRP threader conversion last cycle.  The DOM threader will continue
      using the forward threader infrastructure while continuing to query
      DOM data structures, and only if the conditional does not relsolve,
      using the ranger.  This gives us the best of both worlds, and is a
      proven approach.

      Furthermore, as frange and prange come live in the next cycle, we
      can move away from the forward threader altogether, and just add
      another backward threader.  This will not only remove the last use
      of the forward threader, but will allow us to remove at least 1 or 2
      threader instances.

    * Convert conditional folding to use the method used by the ranger and
      evrp.  Previously DOM was calling into the guts of
      simplify_using_ranges::vrp_visit_cond_stmt.  The blessed way now is
      using fold_cond() which rewrites the conditional and edges
      automatically.

      When legacy is removed, simplify_using_ranges will be further
      cleaned up, and there will only be one entry point into simplifying
      a statement.

    * DOM was setting global ranges determined from unreachable edges as a
      side-effect of using the evrp engine.  We must handle these cases
      before nuking evrp, and DOM seems like a good fit.  I've just moved
      the snippet to DOM, but it could live anywhere else we do a DOM
      walk.

      For the record, this is the case *vrp handled:

            <bb C>:
            ...
            if (c_5(D) != 5)
            goto <bb N>;
            else
            goto <bb M>;
            <bb N>:
            __builtin_unreachable ();
            <bb M>:

      If M dominates all uses of c_5, we can set the global range of c_5
      to [5,5].

    I have tested on x86-64, pcc64le, and aarch64 Linux.

    I also ran threading benchmarks as well as performance benchmarks.

    DOM threads 1.56% more paths which ultimately yields a miniscule total
    increase of 0.03%.

    The conversion to ranger brings a 7.87% performance drop in DOM, which
    is a wash in overall compilation.  This is in line with other
    replacements of legacy evrp with ranger.  We handle a lot more cases.
    It's not free .

    There is a a regression on Wstringop-overflow-4.C which I'm planning
    on XFAILing.  It's another variant of the usual middle-end false
    positives: having no ranges produces no warnings, but slightly refined
    ranges, or worse-- isolating specific problematic cases in the
    threader causes flare-ups.

    As an aside, as Richi has suggested, I think we should discuss
    restricting the threader's ability to thread highly unlikely paths.
    These cause no end of pain for middle-end warnings.  However,
    I don't know if this would conflict with path isolation for
    things like null dereferencing.  ISTR you were interested in this.

    BTW, I think the Wstringop-overflow-4.C test is problematic and I've
    attached my analysis.  Basically the regression is caused by a bad
    interaction with the rounding/alignment that placement new has inlined
    into the IL.  This happens for int16_r[] which the test is testing.
    Ranger can glean some range info, which causes DOM threading to
    isolate a path which causes a warning.

    OK for trunk?

    gcc/ChangeLog:

            * tree-ssa-dom.cc (dom_jt_state): Pass ranger to constructor
            instead of evrp.
            (dom_jt_state::push): Remove m_evrp.
            (dom_jt_state::pop): Same.
            (dom_jt_state::record_ranges_from_stmt): Remove.
            (dom_jt_state::register_equiv): Remove updating of evrp ranges.
            (class dom_jt_simplifier): Pass ranger to constructor.
            Inherit from hybrid_jt_simplifier.
            (dom_jt_simplifier::simplify): Convert to ranger.
            (pass_dominator::execute): Same.
            (all_uses_feed_or_dominated_by_stmt): New.
            (dom_opt_dom_walker::set_global_ranges_from_unreachable_edges):
New.
            (dom_opt_dom_walker::before_dom_children): Call
            set_global_ranges_from_unreachable_edges.
            Do not call record_ranges_from_stmt.
            (dom_opt_dom_walker::after_dom_children): Remove evrp use.
            (cprop_operand): Use int_range<> instead of value_range.
            (dom_opt_dom_walker::fold_cond): New.
            (dom_opt_dom_walker::optimize_stmt): Pass ranger to
            cprop_into_stmt.
            Use fold_cond() instead of vrp_visit_cond_stmt().
            * tree-ssa-threadedge.cc (jt_state::register_equivs_stmt): Do not
            pass state to simplifier.
            * vr-values.h (class vr_values): Make fold_cond public.

    gcc/testsuite/ChangeLog:

            * gcc.dg/sancov/cmp0.c: Adjust for conversion to ranger.
            * gcc.dg/tree-ssa/ssa-dom-branch-1.c: Same.
            * gcc.dg/tree-ssa/ssa-dom-thread-7.c: Same.
            * gcc.dg/vect/bb-slp-pr81635-2.c: Same.
            * gcc.dg/vect/bb-slp-pr81635-4.c: Same.
            * g++.dg/warn/Wstringop-overflow-4.C: Likewise.
            * gcc.target/mips/data-sym-multi-pool.c: Likewise.
            * gcc.target/mips/mips.exp: Likewise.

 gcc/testsuite/g++.dg/warn/Wstringop-overflow-4.C   |  34 ++++
 gcc/testsuite/gcc.dg/sancov/cmp0.c                 |   2 +-
 gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-branch-1.c   |   5 +-
 gcc/testsuite/gcc.dg/tree-ssa/ssa-dom-thread-7.c   |   2 +-
 gcc/testsuite/gcc.dg/vect/bb-slp-pr81635-2.c       |   2 +-
 gcc/testsuite/gcc.dg/vect/bb-slp-pr81635-4.c       |   6 +-
 .../gcc.target/mips/data-sym-multi-pool.c          |   2 +-
 gcc/testsuite/gcc.target/mips/mips.exp             |   1 +
 gcc/tree-ssa-dom.cc                                | 223 +++++++++++----------
 gcc/tree-ssa-threadedge.cc                         |   4 +-
 gcc/vr-values.h                                    |   2 +-
 11 files changed, 170 insertions(+), 113 deletions(-)

I don't know anything about ranger but I wonder if this has to do with
the mips/hppa NaN representation.

[Bug regression/111709] [13/14/15 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[matoro_gcc_bugzilla at matoro dot tk]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

--- Comment #13 from matoro <matoro_gcc_bugzilla at matoro dot tk> ---
Current state of this has expanded to more of the math tests.

FAIL: math/test-double-fma
FAIL: math/test-double-j0
FAIL: math/test-double-j1
FAIL: math/test-double-ldouble-fma
FAIL: math/test-double-log
FAIL: math/test-float32x-float64-fma
FAIL: math/test-float32x-fma
FAIL: math/test-float32x-j0
FAIL: math/test-float32x-j1
FAIL: math/test-float32x-log
FAIL: math/test-float64-fma
FAIL: math/test-float64-j0
FAIL: math/test-float64-j1
FAIL: math/test-float64-log
FAIL: math/test-ldouble-fma
FAIL: math/test-ldouble-j0
FAIL: math/test-ldouble-j1
FAIL: math/test-ldouble-log

[Bug regression/111709] [13/14/15 Regression] Miscompilation of sysdeps/ieee754/dbl-64/s_fma.c

[danglin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111709

John David Anglin <danglin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2024-05-02
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW