Warning: detected a stack overflow; program state may be corrupted, so further execution might be unreliable. Internal error: during type inference of hour...

[Alexander-Barth]

Tests issue the following warning/error CFTime.jl 78368f5:

Warning: detected a stack overflow; program state may be corrupted, so further execution might be unreliable.
Internal error: during type inference of
hour(CFTime.DateTimeStandard{CFTime.Period{Float32, Base.Val{1}(), Base.Val{-3}()}, Base.Val{(2000, 1, 1)}()})
Encountered stack overflow.
This might be caused by recursion over very long tuples or argument lists.
Warning: detected a stack overflow; program state may be corrupted, so further execution might be unreliable.
Internal error: during type inference of
minute(CFTime.DateTimeStandard{CFTime.Period{Float32, Base.Val{1}(), Base.Val{-3}()}, Base.Val{(2000, 1, 1)}()})
Encountered stack overflow.
This might be caused by recursion over very long tuples or argument lists.
Warning: detected a stack overflow; program state may be corrupted, so further execution might be unreliable.
Internal error: during type inference of
_datetuple(CFTime.DateTimeStandard{CFTime.Period{Float32, Base.Val{1}(), Base.Val{-3}()}, Base.Val{(2000, 1, 1)}()})
Encountered stack overflow.
This might be caused by recursion over very long tuples or argument lists.
Warning: detected a stack overflow; program state may be corrupted, so further execution might be unreliable.
Internal error: during type inference of
second(CFTime.DateTimeStandard{CFTime.Period{Float32, Base.Val{1}(), Base.Val{-3}()}, Base.Val{(2000, 1, 1)}()})
Encountered stack overflow.
This might be caused by recursion over very long tuples or argument lists.
Test Summary:                          |   Pass   Total   Time
All tests                              | 874922  874922  48.4s
  Basic functionality                  | 874486  874486   4.9s
    Check with reference values        |     10      10   0.3s
    Internal consistency               |   1638    1638   0.4s
    Leap day                           |     12      12   0.1s
    Stresstest                         | 872784  872784   2.3s
    Error handling                     |      2       2   0.0s
    show                               |      1       1   0.0s
    Conversions                        |     39      39   1.4s
  Comparision with reference algorithm |     14      14   9.2s
  Operators (+,-,<,>...)               |     30      30   0.5s
  CF conventions                       |     56      56   4.7s
    CF time units                      |     35      35   1.0s
    Decoding/decoding CF time data     |     21      21   3.3s
  Different time resolutions           |    132     132  13.4s
  Rounding                             |     56      56   0.7s
  Year 0                               |     15      15   0.1s
  Reported issues                      |    122     122   3.9s
  Aqua                                 |     11      11  11.0s
     Testing CFTime tests passed 

[Alexander-Barth]

a reproducer for the record:

@inline __tf(result, time) = result
@inline function __tf(result, time::T, d1, dn...) where {T}
    return if d1 == 0
        __tf((result..., T(0)), 0, dn...)
    else
        p, time2 = divrem(time, d1, RoundDown)
        __tf((result..., T(p)), time2, dn...)
    end
end

@inline function _timetuple2(time, divi)
    return __tf((), time, divi...)
end

function timetuplefrac2(time)
    # 10 element tuple
    divi = (1.0f0, 0.041666668f0, 0.00069444446f0, 1.1574074f-5, 1.1574074f-8,
            1.1574074f-11, 1.1574073f-14, 1.1574074f-17,
            1.15740735f-20,
            1.1574074f-23,
            )

    return _timetuple2(time, divi)
end

time = 51545.0f0
timetuplefrac2(time)

Output:

julia> timetuplefrac2(time)
Warning: detected a stack overflow; program state may be corrupted, so further execution might be unreliable.
Internal error: during type inference of
timetuplefrac2(Float32)
Encountered stack overflow.
This might be caused by recursion over very long tuples or argument lists.