[Rd] valgrind false positive on R startup?

[Toby Hocking]

Great, that works for me, thanks!
If this is an issue with glibc, has it been reported to the glibc devs, and
are they working on a fix?

On Tue, Jun 9, 2020 at 9:12 PM Prof Brian Ripley <ripley using stats.ox.ac.uk>
wrote:

> It is known, with a known workaround, see e.g.
> https://www.stats.ox.ac.uk/pub/bdr/memtests/README.txt .  Set
> suppressions in ~/.valgrindrc, e.g. the CRAN check machine has
>
> --suppressions=/data/blackswan/ripley/wcsrtombs.supp
>
> It is an issue in your OS (glibc), not TRE nor R.
>
> On 10/06/2020 00:21, Toby Hocking wrote:
> > Hi all,
> >
> > I'm on Ubuntu 18.04, running R-4.0.0 which I compiled from source, and
> > using valgrind I am always seeing the following message. Does anybody
> > else see that? Is that a known false positive? Any ideas how to
> > fix/suppress? Seems related to TRE, do I need to upgrade that?
> >
> > (base) tdhock using maude-MacBookPro:~/R/binsegRcpp$ R --vanilla -d valgrind
> > -e 'extSoftVersion()'
> > ==9565== Memcheck, a memory error detector
> > ==9565== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
> > ==9565== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright
> info
> > ==9565== Command: /home/tdhock/lib/R/bin/exec/R --vanilla -e
> extSoftVersion()
> > ==9565==
> > ==9565== Conditional jump or move depends on uninitialised value(s)
> > ==9565==    at 0x55AB9E0: __wcsnlen_sse4_1 (strlen.S:147)
> > ==9565==    by 0x5598EC1: wcsrtombs (wcsrtombs.c:104)
> > ==9565==    by 0x551EB20: wcstombs (wcstombs.c:34)
> > ==9565==    by 0x50BAA07: wcstombs (stdlib.h:154)
> > ==9565==    by 0x50BAA07: tre_parse_bracket_items (tre-parse.c:336)
> > ==9565==    by 0x50BAA07: tre_parse_bracket (tre-parse.c:453)
> > ==9565==    by 0x50BAA07: tre_parse (tre-parse.c:1380)
> > ==9565==    by 0x50B2498: tre_compile (tre-compile.c:1920)
> > ==9565==    by 0x50AFBE0: tre_regcompb (regcomp.c:150)
> > ==9565==    by 0x4FA9F42: do_gsub (grep.c:2023)
> > ==9565==    by 0x4F79045: bcEval (eval.c:7090)
> > ==9565==    by 0x4F8572F: Rf_eval (eval.c:723)
> > ==9565==    by 0x4F8754E: R_execClosure (eval.c:1888)
> > ==9565==    by 0x4F88316: Rf_applyClosure (eval.c:1814)
> > ==9565==    by 0x4F85902: Rf_eval (eval.c:846)
> > ==9565==
> >
> > R version 4.0.0 (2020-04-24) -- "Arbor Day"
> > Copyright (C) 2020 The R Foundation for Statistical Computing
> > Platform: x86_64-pc-linux-gnu (64-bit)
> >
> > R is free software and comes with ABSOLUTELY NO WARRANTY.
> > You are welcome to redistribute it under certain conditions.
> > Type 'license()' or 'licence()' for distribution details.
> >
> >    Natural language support but running in an English locale
> >
> > R is a collaborative project with many contributors.
> > Type 'contributors()' for more information and
> > 'citation()' on how to cite R or R packages in publications.
> >
> > Type 'demo()' for some demos, 'help()' for on-line help, or
> > 'help.start()' for an HTML browser interface to help.
> > Type 'q()' to quit R.
> >
> >> extSoftVersion()
> >                                  zlib
> bzlib
> >                              "1.2.11"                 "1.0.6,
> 6-Sept-2010"
> >                                    xz
>  PCRE
> >                               "5.2.2"                   "10.31
> 2018-02-12"
> >                                   ICU
> TRE
> >                                "60.2"            "TRE 0.8.0 R_fixes
> (BSD)"
> >                                 iconv
>  readline
> >                          "glibc 2.27"
> "7.0"
> >                                  BLAS
> > "/home/tdhock/lib/R/lib/libRblas.so"
> >>
> >>
> > ==9565==
> > ==9565== HEAP SUMMARY:
> > ==9565==     in use at exit: 40,492,919 bytes in 9,170 blocks
> > ==9565==   total heap usage: 19,784 allocs, 10,614 frees, 62,951,535
> > bytes allocated
> > ==9565==
> > ==9565== LEAK SUMMARY:
> > ==9565==    definitely lost: 0 bytes in 0 blocks
> > ==9565==    indirectly lost: 0 bytes in 0 blocks
> > ==9565==      possibly lost: 0 bytes in 0 blocks
> > ==9565==    still reachable: 40,492,919 bytes in 9,170 blocks
> > ==9565==                       of which reachable via heuristic:
> > ==9565==                         newarray           : 4,264 bytes in 1
> blocks
> > ==9565==         suppressed: 0 bytes in 0 blocks
> > ==9565== Rerun with --leak-check=full to see details of leaked memory
> > ==9565==
> > ==9565== For counts of detected and suppressed errors, rerun with: -v
> > ==9565== Use --track-origins=yes to see where uninitialised values come
> from
> > ==9565== ERROR SUMMARY: 46 errors from 1 contexts (suppressed: 0 from 0)
> > (base) tdhock using maude-MacBookPro:~/R/binsegRcpp$
> >
> > ______________________________________________
> > R-devel using r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-devel
> >
>
>
> --
> Brian D. Ripley,                  ripley using stats.ox.ac.uk
> Emeritus Professor of Applied Statistics, University of Oxford
>

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