If you goo further back, you will see FAIL on the same platform for quite a
while, but failing in different places. E.g.,
2025-11-05T19:29:34.2882140Z > coef(fmCc)
2025-11-05T19:29:34.2883410Z (Intercept) x chB chC
cha chb chc chd
2025-11-05T19:29:34.2885100Z 12.7781626 19.8494272 -0.8240301 -1.3309157
-31.7032317 -32.8819084 -33.3519985 -34.6249161
2025-11-05T19:29:34.2886740Z > ## (Intercept) x chB
chC cha chb chc chd
2025-11-05T19:29:34.2888830Z > ## 12.7781626 19.8494272 -0.8240301
-1.3309157 -31.7032317 -32.8819084 -33.3519985 -34.6249161
2025-11-05T19:29:34.2891030Z > (coef(fmCf) -> cf.f) # the same
2025-11-05T19:29:34.2892540Z (Intercept) x chB chC
cha chb chc chd
2025-11-05T19:29:34.2894330Z 12.7781626 19.8494272 -0.8240301 -1.3309157
-31.7032317 -32.8819084 -33.3519985 -34.6249161
2025-11-05T19:29:34.2895830Z > stopifnot(exprs = {
2025-11-05T19:29:34.2897020Z + identical(coef(fmCc), cf.f)
2025-11-05T19:29:34.2898910Z + })
2025-11-05T19:29:34.2900180Z Error: identical(coef(fmCc), cf.f) is not TRUE
2025-11-05T19:29:34.2902120Z Execution halted
I think we have been here before and the culprit was stochasticity in the
multithreaded Accelerate framework. Basically the examples do the same thing
twice and get different results.
.pd
> On 17 Dec 2025, at 11.09, Jeroen Ooms <[email protected]> wrote:
>
> Checking base R on MacOS 15 fails a test on intel (not arm64), see:
> https://contributor.r-project.org/svn-dashboard/
>
> Error: running examples in ‘stats-Ex.R’ failed
> ...
> Error: identical(strip(qrI), strip(lmI[c("hat", "sigma")])) is not TRUE
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
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