t/05_preferred_int.t fails on arm64 + uselongdouble

[eserte]

See subject. A sample fail report on CPAN Testers: http://www.cpantesters.org/cpan/report/2c777566-b488-11ec-b3c7-422226a1a11b

I am also about to send a fail report which looks like this:

#   Failed test 'dump (?^:^(c4 14 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 65 2b 33 34|c4 17 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 34 32 31 65 2b 33 34)$)'
#   at t/05_preferred_int.t line 29.
#                   'c4 26 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 34 32 30 35 36 34 38 37 39 34 31 32 36 37 35 32 31 35 65 2b 33 34'
#     doesn't match '(?^:^(c4 14 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 65 2b 33 34|c4 17 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 34 32 31 65 2b 33 34)$)'

#   Failed test 'dump (?^:^(c4 15 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 38 65 2b 33 35|c4 18 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 37 39 33 36 65 2b 33 35))'
#   at t/05_preferred_int.t line 29.
#                   'c4 27 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 37 39 33 36 34 35 31 39 30 33 35 33 30 31 34 30 31 37 32 65 2b 33 35'
#     doesn't match '(?^:^(c4 15 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 38 65 2b 33 35|c4 18 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 37 39 33 36 65 2b 33 35))'

#   Failed test 'dump (?^:^(b4 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 65 2b 33 34|b7 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 34 32 31 65 2b 33 34)$)'
#   at t/05_preferred_int.t line 38.
#                   'd9 26 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 34 32 30 35 36 34 38 37 39 34 31 32 36 37 35 32 31 35 65 2b 33 34'
#     doesn't match '(?^:^(b4 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 65 2b 33 34|b7 38 2e 33 30 37 36 37 34 39 37 33 36 35 35 37 32 34 32 31 65 2b 33 34)$)'

#   Failed test 'dump (?^:^(b5 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 38 65 2b 33 35|b8 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 37 39 33 36 65 2b 33 35))'
#   at t/05_preferred_int.t line 38.
#                   'd9 27 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 37 39 33 36 34 35 31 39 30 33 35 33 30 31 34 30 31 37 32 65 2b 33 35'
#     doesn't match '(?^:^(b5 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 38 65 2b 33 35|b8 2d 36 2e 36 34 36 31 33 39 39 37 38 39 32 34 35 37 39 33 36 65 2b 33 35))'
# Looks like you failed 4 tests of 30.
t/05_preferred_int.t ........ 
Dubious, test returned 4 (wstat 1024, 0x400)
Failed 4/30 subtests 

Config on this system says: archname=aarch64-linux-ld. Perl is 5.38.2.