Re: [Rd] R --debug crashes R on Windows

From: Kevin R. Coombes <kevin.r.coombes_at_gmail.com>
Date: Tue, 17 Apr 2012 14:12:59 -0500

I can reproduce the "R for Windows terminal front-end has stopped working" with both R-2.14.1 and R-2.13.0 (i386), and get the "hang but not crash" with both of the x64 binaries for those versions.

On 4/17/2012 2:01 PM, Henrik Bengtsson wrote:
> I really meant crash and left my report short thinking others would be
> able to reproduce this immediately. Details:
>
> * Launching 'Rterm --debug' from the Windows Command prompt gives me a
> "R for Windows terminal front-end has stopped working: A problem
> caused the ... [Close program]" dialog without any kind of output from
> R itself.
> * It happens with both 'i386\Rterm.exe --debug' and 'x64\Rterm.exe --debug'
> * When doing 'Rgui.exe --debug', there is no message (nor an error
> message/dialog) and it exits immediately.
> (* Trying random non-existing command line options (with R, Rterm and
> Rgui) are properly ignored and gives a warning, e.g. WARNING: unknown
> option '--dror' when launching R.)
> * It happens with R v2.10.0, R v2.14.2, R v2.15.0patched, and R devel
> (binaries from CRAN). On R v2.13.0, it *hangs* (!=exit) without the
> dialog and it responds to Ctrl-C.
> * Trying to use WinDbg, I get the following from the core dump:
>
> Microsoft (R) Windows Debugger Version 6.12.0002.633 AMD64
> Copyright (c) Microsoft Corporation. All rights reserved.
>
> Loading Dump File [C:\Users\hb\AppData\Local\CrashDumps\Rterm.exe.6212.dmp]
> User Mini Dump File: Only registers, stack and portions of memory are available
>
> Symbol search path is:
> SRV*C:\SymCache*http://msdl.microsoft.com/download/symbols
> Executable search path is:
> Windows 7 Version 7601 (Service Pack 1) MP (4 procs) Free x64
> Product: WinNt, suite: SingleUserTS
> Machine Name:
> Debug session time: Tue Apr 17 11:50:48.000 2012 (UTC - 7:00)
> System Uptime: not available
> Process Uptime: 0 days 0:00:16.000
> ............................
> This dump file has a breakpoint exception stored in it.
> The stored exception information can be accessed via .ecxr.
> ntdll!ZwWaitForMultipleObjects+0xa:
> 00000000`77a618ca c3 ret
>
> I don't find this particularly important, but wanted to share in case
> there is some deprecated.obsolete code in there for option '--debug'.
> > From your reply it sounds as if --debug is intended, so ok with me.
>
> /Henrik
>
> On Tue, Apr 17, 2012 at 3:43 AM, Duncan Murdoch
> <murdoch.duncan_at_gmail.com> wrote:
>> On 12-04-17 2:19 AM, Henrik Bengtsson wrote:
>>> 'R --debug' and 'Rterm --debug' crash R on Windows. Indeed, --debug
>>> is not a documented command line option, but it still causes a crash.
>>>
>>> This occurs with R v2.15.0 patched and R devel - both from 2012-04-09
>>> (r58947).
>>
>> What do you mean by "crash"? For me, they do nothing, i.e. both commands
>> just exit immediately. What the source shows they are trying to do is break
>> to a debugger upon startup, but if there's no debugger there, it might look
>> like a crash.
>>
>> Duncan Murdoch
>>
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