[Rd] Assistance much appreciated

[Simon Urbanek]

FWIW I was able to replicate the problem using AIX7.1 on Power8, R 3.2.3, vac/xlc 11.1, xlf 13.1 in 64-bit mode. Indeed, Peter's analysis is correct re_regexecb(&regline, line..) returns REG_NOMATCH even though the string is literally "Package: tools" - no special characters anywhere.

On Dec 17, 2015, at 3:37 PM, peter dalgaard <pdalgd at gmail.com> wrote:

> 
>> On 17 Dec 2015, at 19:58 , Michael Felt <aixtools at gmail.com> wrote:
>> 
>> On 2015-12-17 19:30, peter dalgaard wrote:
>>> Presumably the file in question is one of
>>> 
>>> Peter-Dalgaards-MacBook-Air:BUILD pd$ grep -r "^Package: tools" *
>>> library/tools/DESCRIPTION:Package: tools
>>> src/library/tools/DESCRIPTION:Package: tools
>>> 
>>> so the first thing I'd do is to have a good look at those files and see if they got somehow corrupted.
>>> 
>>> If they look sane, presumably the bit of code that checks it isn't... So that would be my next thing to check.
>>> 
>>> -pd
>> I had just gotten here, and tried comparing them with the 32-bit build (as I do not know what sane is yet).
>> 
>> Sources are in:
>> /data/prj/cran/R-3.2.3
>> 
>> Builds are in:
>> /data/prj/cran/32/R-3.2.3 and
>> /data/prj/cran/64/R-3.2.3
>> 
>> The files, in the build directories look "sane", at least comparable
> 
> OK. Perhaps a check for special characters with a hex editor, just to be sure? But probably not the cause.
> 
>> 
>> root at x065:[/data/prj/cran/R-3.2.3]sdiff -w 132 /data/prj/cran/??/R-3.2.3/library/tools/DESCRIPTION
>> Package: tools                                                      Package: tools
>> Version: 3.2.3                                                      Version: 3.2.3
>> Priority: base                                                      Priority: base
>> Title: Tools for Package Development                                Title: Tools for Package Development
>> Author: R Core Team                                                 Author: R Core Team
>> Maintainer: R Core Team <R-core at r-project.org>                      Maintainer: R Core Team <R-core at r-project.org>
>> Description: Tools for package development, administration and      Description: Tools for package development, administration and
>> License: Part of R 3.2.3                                            License: Part of R 3.2.3
>> Suggests: XML, codetools, methods                                   Suggests: XML, codetools, methods
>> Built: R 3.2.3; powerpc-ibm-aix5.3.7.0; 2015-12-17 12:02:34 UTC  |  Built: R 3.2.3; ; Thu Dec 17 17:39:55 UTC 2015; unix
>> 
>> As the 32-bit build completes, while the 64-bit stops at "tools" there is a difference in what they have available:
>> 
>> root at x065:[/data/prj/cran/R-3.2.3]ls -l /data/prj/cran/??/R-3.2.3/library/tools
>> /data/prj/cran/32/R-3.2.3/library/tools:
>> total 72
>> -rw-r--r--   1 root     33              356 Dec 17 12:02 DESCRIPTION
>> -rw-r--r--   1 root     33             3665 Dec 16 11:37 INDEX
>> drwxr-sr-x   2 root     33             4096 Dec 17 08:45 Meta
>> -rw-r--r--   1 root     33             7112 Dec 17 12:02 NAMESPACE
>> drwxr-sr-x   2 root     33             4096 Dec 17 12:02 R
>> drwxr-sr-x   2 root     33             4096 Dec 16 11:37 help
>> drwxr-sr-x   2 root     33             4096 Dec 16 11:37 html
>> drwxr-sr-x   2 root     33             4096 Dec 16 11:34 libs
>> 
>> /data/prj/cran/64/R-3.2.3/library/tools:
>> total 40
>> -rw-r--r--   1 root     33              339 Dec 17 17:40 DESCRIPTION
>> -rw-r--r--   1 root     33             7112 Dec 17 17:40 NAMESPACE
>> drwxr-sr-x   2 root     33             4096 Dec 17 17:19 R
>> drwxr-sr-x   2 root     33             4096 Dec 17 05:58 libs
>> 
>> So, is dcf.c, or main.c the better place to check. dcf.c does not look like "fun" - all those lexical arguments at the start:
> 
> Cue story of looking for keys under lamppost...
> 
>> 
>> SEXP attribute_hidden do_readDCF(SEXP call, SEXP op, SEXP args, SEXP env)
>> {
>> .... man many lines ....
>>                              } else {
>>                                      /* Must be a regular line with no tag ... */
>>                                      line[20] = '\0';
>>                                      error(_("Line starting '%s ...' is malformed!"), line);
>>                              }
>>                      }
>>              }
>>      }
>> ... more lines to go...
>> 
> 
> As you're dying in an else clause, a previous if () must contain the clue. Unfortunately not necessarily the matching one.
> 
> My guess is that your TRE library is broken. The line should have matched the RE "regline" defined as
> 
>   tre_regcomp(&regline, "^[^:]+:[[:blank:]]*", REG_EXTENDED);
> ...and used here:
>                if(tre_regexecb(&regline, line, 1, regmatch, 0) == 0) { 
> 
> but apparently does not.
> 
> 
> 
>> Thanks for the assistance!
>> 
>> Michael
> 
> -- 
> Peter Dalgaard, Professor,
> Center for Statistics, Copenhagen Business School
> Solbjerg Plads 3, 2000 Frederiksberg, Denmark
> Phone: (+45)38153501
> Office: A 4.23
> Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com
> 
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