https://github.com/gaborcsardi/redfish

https://github.com/gaborcsardi/redfish

Last synced: 13 days ago
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• Host: GitHub
• URL: https://github.com/gaborcsardi/redfish
• Owner: gaborcsardi
• Created: 2021-05-27T17:20:23.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2021-05-28T08:41:50.000Z (over 3 years ago)
• Last Synced: 2024-11-05T03:42:07.275Z (2 months ago)
• Language: C
• Size: 7.81 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        

# Demonstrate a crash with R ALTREP

Either an ALTREP bug, or possibly I am doing something wrong.

## How to reproduce

This happens with every R version with ALTREP support, from 3.5.0 to

4.2.0 (current R-devel). This is macOS Mojave, if that matters.

1. Install the redfish package. (`load_all()` tends not to crash.)

2. Run `redfish:::fail()` from the command line:

```

❯ R-4.2 -q --vanilla -e 'sessionInfo(); redfish:::fail()'

> sessionInfo(); redfish:::fail()

R Under development (unstable) (2021-05-04 r80261)

Platform: x86_64-apple-darwin17.0 (64-bit)

Running under: macOS Mojave 10.14.6

Matrix products: default

BLAS:   /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRblas.dylib

LAPACK: /Library/Frameworks/R.framework/Versions/4.2/Resources/lib/libRlapack.dylib

locale:

[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:

[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):

[1] compiler_4.2.0

[1]

 *** caught segfault ***

address 0x7fed00000001, cause 'memory not mapped'

Traceback:

 1: print.default(i)

 2: print(i)

 3: FUN(X[[i]], ...)

 4: lapply(make(let5), function(i) {    print(i)})

 5: redfish:::fail()

An irrecoverable exception occurred. R is aborting now ...

zsh: segmentation fault  R-4.2 -q --vanilla -e 'sessionInfo(); redfish:::fail()'

```

Sometimes there is no crash, but the first element of the indexed vector

is corrupted:

```

❯ R-4.2 -q --vanilla -e 'redfish:::fail()'

> redfish:::fail()

[1] TRUE

[1] 1

[1] 1

[1] 1

[1] 1

[[1]]

[1] TRUE

[[2]]

[1] 1

[[3]]

[1] 1

[[4]]

[1] 1

[[5]]

[1] 1

```