Rserve stil crashes on Windows with invalid escapes sequences

[stepelu]

Opening a new issue as the previous one (see #19) was closed while the issue is still present and I can't re-open it.

The link mentioned in the proposed resolution suggests to use option(error=function() NULL), you probably mean options(error=function() NULL).
That still doesn't work: the example below shows that even though the error option is set, Rserve still crashes on the invalid escape sequence.

C:\Users\sp\Documents\R\win-library\3.1\Rserve\libs\x64>Rserve_d.exe
Rserve 1.7-3 () (C)Copyright 2002-2013 Simon Urbanek
$Id$

Loading config file Rserv.cfg
Failed to find config file Rserv.cfg
Rserve: Ok, ready to answer queries.
 - create_server(port = 6311, socket = <NULL>, mode = 0, flags = 0x4000)
INFO: adding server 0000000000518360 (total 1 servers)
INFO: accepted connection for server 0000000000518360, calling connected
connection accepted.
sending ID string.

header read result: 16
DUMP [16]: 03 00 00 00 57 00 00 00 00 00 00 00 00 00 00 00  |....W...........
loading buffer (awaiting 87 bytes)
parsing parameters (buf=0000000000518E40, len=87)
DUMP [87]: 04 53 00 00 74 72 79 28 65 76 61 6c 28 70 61 72 73 65 28 74 65 78 74 3d 22 63 61 70 74 75 72 65 2e 6f 75 74 70 75 74 28 6f 70 74 69 6f 6e 73 28 65 72 72 6f 72 3d 66 75 6
e 63 74 69 6f 6e 28 29 20 4e 55 4c 4c 29 29 22 29 29 2c 73 69 6c 65 6e 74 3d 54 52 55 45 29  |.S..try(eval(parse(text="capture.output(options(error=function() NULL))")),silent=TRUE
)
PAR[0]: 00000057 (PAR_LEN=83, PAR_TYPE=4, large=no, c=0000000000518E40, ptr=0000000000518E44)
CMD=00000003, pars=1
parseString("try(eval(parse(text="capture.output(options(error=function() NULL))")),silent=TRUE)")
buffer parsed, stat=1, parts=1
result type: 20, length: 1
R_tryEval(xp,R_GlobalEnv,&Rerror);
Calling R_tryEval for expression 1 [type=6] ...
Expression 1, error code: 0
expression(s) evaluated (Rerror=0).
String vector of length 0:
getStorageSize(0000000005387D60,type=16,len=0) = 4
result storage size = 5 bytes
stored 0000000005387D60 at 0000000005A7F048, 0 bytes
stored SEXP; length=8 (incl. DT_SEXP header)
OUT.sendRespData
HEAD DUMP [16]: 01 00 01 00 08 00 00 00 00 00 00 00 00 00 00 00  |................
BODY DUMP [8]: 0a 04 00 00 22 00 00 00  |...."...
reply sent.

header read result: 16
DUMP [16]: 03 00 00 00 5f 00 00 00 00 00 00 00 00 00 00 00  |...._...........
loading buffer (awaiting 95 bytes)
parsing parameters (buf=0000000000518E40, len=95)
DUMP [95]: 04 5b 00 00 74 72 79 28 65 76 61 6c 28 70 61 72 73 65 28 74 65 78 74 3d 22 63 61 70 74 75 72 65 2e 6f 75 74 70 75 74 28 73 65 74 77 64 28 27 5a 3a 5c 73 70 5c 44 72 6f 7
0 62 6f 78 5c 50 72 6a 5c 73 63 69 6c 75 61 5c 68 65 61 64 27 29 29 22 29 29 2c 73 69 6c 65 6e 74 3d 54 52 55 45 29  |.[..try(eval(parse(text="capture.output(setwd('Z:\sp\Dropbox\P
rj\scilua\head'))")),silent=TRUE)
PAR[0]: 0000005f (PAR_LEN=91, PAR_TYPE=4, large=no, c=0000000000518E40, ptr=0000000000518E44)
CMD=00000003, pars=1
parseString("try(eval(parse(text="capture.output(setwd('Z:\sp\Dropbox\Prj\scilua\head'))")),silent=TRUE)")
Error: '\s' is an unrecognized escape in character string starting ""capture.output(setwd('Z:\s"

Moreover the documentation suggests that Rserve runs in not-interactive mode (with default config) in Windows prior to 0.6-2, while I'm running Rserve 1.7-3.

[stepelu]

Would you please have any update on this issue? Have you been able to replicate it?

Thanks

[s-u]

Sorry, no, I don't use Windows. Also note that this is not a crash - it's merely R exiting on an error. Since the main purpose of Rserve is to provide parallel sessions while Windows is incapable of that, it is a very rare exception to use Windows and Rserve. Windows support (if present) is mostly provided as a contribution from the community or friendly folks at Revolution Analytics. I will certainly entertain pull requests to restore Windows functionality and to fix any Windows-specific issues.

[smaskar]

Any suggested solution to fix the following issue. I am using R serve 3.2.0 on windows.

I am also getting the following error
Starting Rserve...
"C:\PROGRA1\R\R-321.0\library\Rserve\libs\x64\Rserve.exe"

Rserve: Ok, ready to answer queries.
Error: '\w' is an unrecognized escape in character string starting "'C:\transmart124\apache-tomcat7\w"
Is

[s-u]

Note, both errors are user errors - you have to escape \ in R so it must be "C:\\Pro..."