[Bug 35320] New: wine crash in MSVCRT__mbstowcs_l regarding locale, & other minor locale related problems

http://bugs.winehq.org/show_bug.cgi?id=35320

Bug ID: 35320
           Summary: wine crash in MSVCRT__mbstowcs_l regarding locale, &
                    other minor locale related problems
           Product: Wine
           Version: 1.7.10
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: msvcrt
          Assignee: [e-mail]
          Reporter: [e-mail]
    Classification: Unclassified

Created attachment 47106
  --> http://bugs.winehq.org/attachment.cgi?id=47106
The file needed to cause the crash.

from r project (http://www.r-project.org/)
http://cran.ma.imperial.ac.uk/bin/windows/base/R-2.15.3-win.exe

After installing, running:

./wine ~/.wine/drive_c/Program\ Files/R/R-2.15.3/bin/R.exe

Then, at the R console prompt, type (having put the attached file at /tmp/1.R):

Sys.setlocale("LC_CTYPE", "Chinese")
   source('z:/tmp/1.R', encoding='UTF8')

wine immediately crashes with:
--------------------------------------
wine: Unhandled page fault on read access to 0x00000000 at address 0x7eda29af
(thread 0030), starting debugger...
...

Backtrace:
=>0 0x7eda29af MSVCRT__mbstowcs_l+0x5f(wcstr=<couldn't compute location>,
mbstr=<couldn't compute location>, count=<couldn't compute location>,
locale=<couldn't compute location>)
[/home/Nobak-Hin-Tak/tmp-git/wine/dlls/msvcrt/mbcs.c:2140] in msvcrt
(0x0440a168)
  1 0x7eda2b06 MSVCRT_mbstowcs+0x35(wcstr="as a &Metafile    CTRL+W",
mbstr=0x0(nil), count=0x64)
[/home/Nobak-Hin-Tak/tmp-git/wine/dlls/msvcrt/mbcs.c:2161] in msvcrt
(0x0440a198)
  2 0x6355b525 in rgraphapp (+0x1b524) (0x00030046)
0x7eda29af MSVCRT__mbstowcs_l+0x5f
[/home/Nobak-Hin-Tak/tmp-git/wine/dlls/msvcrt/mbcs.c:2140] in msvcrt: movzbl   
0x0(%eax),%eax
2140            if(mbstr[size] == '\0')
...
----------------------------------------

I assume this info in the backtrace should be enough to address the crash.

FYI, the slightly unusual procedure is because under R under Vista in an
English locale doesn't like to plot graphs with non-latin annotations/texts.
The above procedure when used under Vista on British English windows would
result in R displaying an almost empty plot with a chinese title. Native R on
linux does not need the setlocale part to plot utf8-based texts.

Also R on Vista accepts 'Sys.setlocale("LC_CTYPE", "Chinese_China.950")'. I
only realized that trying to set traditional chinese [950] in a simplified
chinese region [china] is wrong when it is rejected on linux; but R on Vista
accepts this.

------------
Warning message:
In Sys.setlocale("LC_CTYPE", "Chinese_China.950") :
  OS reports request to set locale to "Chinese_China.950" cannot be honored
------------

When R is running on Vista, it reports the locale as "English_United
Kingdom.1252".

But under Linux (in en_GB.utf8 locale), R warns of

-----------
During startup - Warning messages:
1: Setting LC_TIME=en_GB.utf8 failed 
2: Setting LC_MONETARY=en_GB.utf8 failed 
-----------

So three locale related issue:

- a crash in msvcrt
- R under Vista accepts "Chinese_China.950" but R under wine does not.
- there are locale-related warning messages from R on start up when running
under wine.