a215020@onyx.fmr.com
2002-Mar-08 21:36 UTC
[Rd] Sys.putenv environment variables disappear (PR#1371)
Environment variables set with Sys.putenv() disappear (i.e. become "")
after a while, especially after heavy-duty I/O. Example:
R> x <- matrix(1., 3000, 3000)
R> save(x, file="myx.RData")
R> Sys.putenv(HOME="/tmp")
R> while (Sys.getenv("HOME") != "")
{cat("ok\n"); load("myx.RData")}
The loop prints "ok" twice, then exits because HOME has been
destroyed.
I'm running R-1.4.1 (I also saw this in earlier versions), under
Solaris 2.6. Dave Kane reported this problem to R-help on 6/4/01, and
I reported it on 11/30/01, but nobody else has confirmed (or denied)
seeing it (except Kjetil Halvorsen did not see it on Windows).
FYI, my include/config.h file has "#define HAVE_PUTENV 1". Here's
the
usual version info.
Version:
platform = sparc-sun-solaris2.6
arch = sparc
os = solaris2.6
system = sparc, solaris2.6
status =
major = 1
minor = 4.1
year = 2002
month = 01
day = 30
language = R
Search Path:
.GlobalEnv, package:misc, package:io, package:arrays, package:ls1,
package:g.data, package:db, package:ts, package:ctest, Autoloads, package:base
-- David Brahm (brahm@alum.mit.edu)
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Thomas Lumley
2002-Mar-08 21:47 UTC
[Rd] Sys.putenv environment variables disappear (PR#1371)
On Fri, 8 Mar 2002 a215020@onyx.fmr.com wrote:> Environment variables set with Sys.putenv() disappear (i.e. become "") > after a while, especially after heavy-duty I/O. Example: > > R> x <- matrix(1., 3000, 3000) > R> save(x, file="myx.RData") > R> Sys.putenv(HOME="/tmp") > R> while (Sys.getenv("HOME") != "") {cat("ok\n"); load("myx.RData")} > > The loop prints "ok" twice, then exits because HOME has been destroyed. > > I'm running R-1.4.1 (I also saw this in earlier versions), under > Solaris 2.6. Dave Kane reported this problem to R-help on 6/4/01, and > I reported it on 11/30/01, but nobody else has confirmed (or denied) > seeing it (except Kjetil Halvorsen did not see it on Windows). >It's happening on Linux with the current source tree. -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
Robert Gentleman
2002-Mar-08 21:54 UTC
[Rd] Sys.putenv environment variables disappear (PR#1371)
On Fri, Mar 08, 2002 at 10:36:49PM +0100, a215020@onyx.fmr.com wrote:> Environment variables set with Sys.putenv() disappear (i.e. become "") > after a while, especially after heavy-duty I/O. Example: > > R> x <- matrix(1., 3000, 3000) > R> save(x, file="myx.RData") > R> Sys.putenv(HOME="/tmp") > R> while (Sys.getenv("HOME") != "") {cat("ok\n"); load("myx.RData")} >We use for (i = 0; i < n; i++) { LOGICAL(ans)[i] = putenv(CHAR(STRING_ELT(vars, i))) == 0; } and the man page for RedHat says: int putenv(const char *string); DESCRIPTION The putenv() function adds or changes the value of envi- ronment variables. The argument string is of the form name=value. If name does not already exist in the envi- ronment, then string is added to the environment. If name does exist, then the value of name in the environment is changed to value. The string pointed to by string becomes part of the environment, so altering the string changes the environment. So, after we UNPROTECT this is bad. Seems like we need to do something different.> The loop prints "ok" twice, then exits because HOME has been destroyed. > > I'm running R-1.4.1 (I also saw this in earlier versions), under > Solaris 2.6. Dave Kane reported this problem to R-help on 6/4/01, and > I reported it on 11/30/01, but nobody else has confirmed (or denied) > seeing it (except Kjetil Halvorsen did not see it on Windows). > > FYI, my include/config.h file has "#define HAVE_PUTENV 1". Here's the > usual version info. > Version: > platform = sparc-sun-solaris2.6 > arch = sparc > os = solaris2.6 > system = sparc, solaris2.6 > status = > major = 1 > minor = 4.1 > year = 2002 > month = 01 > day = 30 > language = R > > Search Path: > .GlobalEnv, package:misc, package:io, package:arrays, package:ls1, package:g.data, package:db, package:ts, package:ctest, Autoloads, package:base > > -- David Brahm (brahm@alum.mit.edu) > > -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- > r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html > Send "info", "help", or "[un]subscribe" > (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch > _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._-- +---------------------------------------------------------------------------+ | Robert Gentleman phone : (617) 632-5250 | | Associate Professor fax: (617) 632-2444 | | Department of Biostatistics office: M1B28 | Harvard School of Public Health email: rgentlem@jimmy.dfci.harvard.edu | +---------------------------------------------------------------------------+ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._