[Rd] reproducible segmentation fault installing packages on FreeBSD 11.1

[Joseph Mingrone]

Hi,

This happens when attempting to install any package. There were no such
problems on 11.0.

Some other ways to trigger the problem:

curlGetHeaders("http://bugs.r-project.org")
There are no problems with the first two calls, but then the crash
always happens on the third call.

tf <- tempfile()
download.file("http://cran.r-project.org/",tf,method="libcurl")
This one is ok for the first five calls, but always crashes on the
sixth call.

download.file("http://cran.r-project.org/",tf,method="internal")
does not trigger the issue.

Is there any further information I can provide or anything else I can
test?

Joseph

jrm at phe ~ % R --debugger=gdb
GNU gdb (GDB) 8.0 [GDB v8.0 for FreeBSD]
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Reading symbols from /usr/local/lib/R/bin/exec/R...(no debugging symbols found)...done.
(gdb) r
Starting program: /usr/local/lib/R/bin/exec/R

R version 3.4.1 (2017-06-30) -- "Single Candle"
Copyright (C) 2017 The R Foundation for Statistical Computing
Platform: amd64-portbld-freebsd11.1 (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
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> install.packages("ggplot2")
Installing package into ‘/usr/home/jrm/.R/amd64-portbld-freebsd11.1-library/3.4’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
[New LWP 100239 of process 56011]
[LWP 100239 of process 56011 exited]

--- snip ---

Selection: 1
[New LWP 100265 of process 56011]
[LWP 100265 of process 56011 exited]
also installing the dependencies ‘stringi’, ‘magrittr’, ‘colorspace’, ‘Rcpp’, ‘stringr’, ‘RColorBrewer’, ‘dichromat’, ‘munsell’, ‘labeling’, ‘rlang’, ‘digest’, ‘gtable’, ‘plyr’, ‘reshape2’, ‘scales’, ‘tibble’, ‘lazyeval’

trying URL 'https://cloud.r-project.org/src/contrib/stringi_1.1.5.tar.gz'
[New LWP 100267 of process 56011]
[LWP 100267 of process 56011 exited]
Content type 'application/x-gzip' length 3645872 bytes (3.5 MB)
==================================================
downloaded 3.5 MB

trying URL 'https://cloud.r-project.org/src/contrib/magrittr_1.5.tar.gz'
[New LWP 100844 of process 56011]
[LWP 100844 of process 56011 exited]
Content type 'application/x-gzip' length 200504 bytes (195 KB)
==================================================
downloaded 195 KB

trying URL 'https://cloud.r-project.org/src/contrib/colorspace_1.3-2.tar.gz'
[New LWP 100161 of process 56011]
[LWP 100161 of process 56011 exited]
Content type 'application/x-gzip' length 293433 bytes (286 KB)
==================================================
downloaded 286 KB

trying URL 'https://cloud.r-project.org/src/contrib/Rcpp_0.12.12.tar.gz'
[New LWP 100854 of process 56011]

Thread 7 received signal SIGSEGV, Segmentation fault.
[Switching to LWP 100854 of process 56011]
uw_frame_state_for (context=context at entry=0x7fffdfffde20, fs=fs at entry=0x7fffdfffdb70)
    at /usr/ports/lang/gcc5/work/gcc-5.4.0/libgcc/unwind-dw2.c:1249
1249          return MD_FALLBACK_FRAME_STATE_FOR (context, fs);

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