[R-SIG-Mac] [External] Rmpfr crashes on Mac

[Simon Urbanek]

Kevin,

that is a different story, yes, Rosetta2 is incomplete - the advice on M1 is to use native R.

Cheers,
Simon


> On Nov 29, 2021, at 12:30 PM, Kevin Ushey <kevinushey using gmail.com> wrote:
> 
> I can reproduce something similar on my M1 macOS machine, when using the
> x86_64 build of R. I see:
> 
>> x1 <- mpfr(-50, 200)
> *** caught illegal operation ***
> address 0x10c5f623b, cause 'illegal opcode'
> 
> This is with the binary of Rmpfr 0.8-7 as from CRAN, with R 4.1.2. Here's
> what LLDB says:
> 
> * thread #1, queue = 'com.apple.main-thread', stop reason =
> EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
>    frame #0: 0x000000010f69c23b Rmpfr.so`mpfr_set_d + 43
> Rmpfr.so`mpfr_set_d:
> ->  0x10f69c23b <+43>: vucomisd %xmm0, %xmm0
>    0x10f69c23f <+47>: jp     0x10f69c39a               ; <+394>
>    0x10f69c245 <+53>: vpxor  %xmm1, %xmm1, %xmm1
>    0x10f69c249 <+57>: vucomisd %xmm1, %xmm0
> 
> And the relevant part of the stack trace:
> 
> (lldb) bt
> * thread #1, queue = 'com.apple.main-thread', stop reason =
> EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)
>  * frame #0: 0x000000010f69c23b Rmpfr.so`mpfr_set_d + 43
>    frame #1: 0x000000010f6809d3 Rmpfr.so`d2mpfr1_(x=-50,
> i_prec=<unavailable>, rnd=MPFR_RNDN) at convert.c:129:5 [opt]
>    frame #2: 0x000000010f680eb0 Rmpfr.so`d2mpfr1_list(x=<unavailable>,
> prec=<unavailable>, rnd_mode=<unavailable>) at convert.c:186:29 [opt]
> 
> At least for my case, my guess is that the 'vucomisd' instruction isn't
> available via Apple's Rosetta emulation. It's possible users with older
> macOS machines not supporting AVX instructions could see this, as well?
> 
> Best,
> Kevin
> 
> On Sun, Nov 28, 2021 at 9:54 AM Richard M. Heiberger <rmh using temple.edu> wrote:
> 
>> Works normally in R-4.1.2 with Rmpfr_0.8-7 on Macintosh
>> aarch64-apple-darwin20
>> I am running inside Emacs using ESS
>> 
>>> packageVersion("Rmpfr")
>> [1] ‘0.8.7’
>>> library(Rmpfr)
>> Loading required package: gmp
>> 
>> Attaching package: ‘gmp’
>> 
>> The following objects are masked from ‘package:base’:
>> 
>>    %*%, apply, crossprod, matrix, tcrossprod
>> 
>> C code of R package 'Rmpfr': GMP using 64 bits per limb
>> 
>> 
>> Attaching package: ‘Rmpfr’
>> 
>> The following object is masked from ‘package:gmp’:
>> 
>>    outer
>> 
>> The following objects are masked from ‘package:stats’:
>> 
>>    dbinom, dgamma, dnbinom, dnorm, dpois, dt, pnorm
>> 
>> The following objects are masked from ‘package:base’:
>> 
>>    cbind, pmax, pmin, rbind
>> 
>>> x1 <- mpfr(-50, 200)
>>> x1
>> 1 'mpfr' number of precision  200   bits
>> [1] -50
>>> x2 <- mpfr(-50.1, 200)
>>> x2
>> 1 'mpfr' number of precision  200   bits
>> [1] -50.10000000000000142108547152020037174224853515625
>>> version
>>               _
>> platform       aarch64-apple-darwin20
>> arch           aarch64
>> os             darwin20
>> system         aarch64, darwin20
>> status
>> major          4
>> minor          1.2
>> year           2021
>> month          11
>> day            01
>> svn rev        81115
>> language       R
>> version.string R version 4.1.2 (2021-11-01)
>> nickname       Bird Hippie
>>> 
>> 
>>> On Nov 27, 2021, at 15:46, Dev Chakraborty <dpc10ster using gmail.com> wrote:
>>> 
>>> I used package Rmpfr ca. 2017 and it worked fine. The latest version
>>> (0.8-7) causes R (running under RStudio) to crash. A simple example is:
>>> 
>>> library(Rmpfr)
>>> x1 <- mpfr(-50, 200)
>>> x2 <- mpfr(-50.1, 200)
>>> 
>>> Which gives the message:
>>> 
>>> R Session Aborted
>>> R encountered a fatal error
>>> The session was terminated
>>> Start New Session
>>> 
>>> I am using R version 4.1.1 on a Mac running MacOS 12.0.1. and an older
>> iMac
>>> running 10.15.7. The problem occurs with both machines.
>>> 
>>> When I install from the CRAN archive file  Rmpfr_0.6-1.tar.gz (the
>> version
>>> of the package around 2017, corresponding to the last time I used it) the
>>> problem goes away.
>>> 
>>>      [[alternative HTML version deleted]]
>>> 
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