[R-SIG-Mac] Running R with lldb
Duncan Murdoch
murdoch@dunc@n @end|ng |rom gm@||@com
Wed Aug 5 16:42:21 CEST 2020
Thanks, attaching to the process seemed simplest.
For others: the manual talks about doing it with gdb, but the same
syntax works with lldb. Here's an example: Start R, then open a new
terminal window:
murdoch using djmair3 ~
$ ps
PID TTY TIME CMD
11293 ttys000 0:00.08 -bash
13829 ttys000 0:00.31 /Users/murdoch/R/R-devel/bin/exec/R
13804 ttys001 0:00.03 -bash
murdoch using djmair3 ~
$ lldb -p 13829
(lldb) process attach --pid 13829
Process 13829 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
frame #0: 0x00007fff70eb10fe libsystem_kernel.dylib`__select + 10
libsystem_kernel.dylib`__select:
-> 0x7fff70eb10fe <+10>: jae 0x7fff70eb1108 ; <+20>
0x7fff70eb1100 <+12>: movq %rax, %rdi
0x7fff70eb1103 <+15>: jmp 0x7fff70eaa22d ; cerror
0x7fff70eb1108 <+20>: retq
Target 0: (R) stopped.
Duncan Murdoch
On 05/08/2020 10:16 a.m., Prof Brian Ripley wrote:
> One of the suggestions in
>
> https://cran.r-project.org/doc/manuals/r-devel/R-exts.html#Debugging-on-macOS
>
> should help. Both worked for my build of R-devel yesterday ....
>
>
> On 05/08/2020 14:25, Duncan Murdoch wrote:
>> I'm now successfully building R-devel in /Users/murdoch/R/R-devel. If I
>> run it from that directory using
>>
>> bin/R -d lldb
>>
>> it starts, but "run" gives this error:
>>
>> Process 11165 launched: '/Users/murdoch/R/R-devel/bin/exec/R' (x86_64)
>> dyld: Library not loaded: libRblas.dylib
>> Referenced from: /Users/murdoch/R/R-devel/bin/exec/R
>> Reason: image not found
>> Process 11165 stopped
>> * thread #1, stop reason = signal SIGABRT
>> frame #0: 0x00000001004c7ede dyld`__abort_with_payload + 10
>> dyld`__abort_with_payload:
>> -> 0x1004c7ede <+10>: jae 0x1004c7ee8 ; <+20>
>> 0x1004c7ee0 <+12>: movq %rax, %rdi
>> 0x1004c7ee3 <+15>: jmp 0x1004c6408 ; cerror_nocancel
>> 0x1004c7ee8 <+20>: retq
>> Target 0: (R) stopped.
>>
>> I can start it from the /Users/murdoch/R/R-devel/lib directory where
>> libRblas.dylib lives. Setting DYLD_LIBRARY_PATH or LD_LIBRARY_PATH to
>> point there doesn't help (either on the bin/R command line or exported).
>> Is there some other way to run it from whatever directory I happen to
>> be in?
>>
>> Duncan Murdoch
>>
>> On 02/05/2020 11:26 p.m., Simon Urbanek wrote:
>>> Vince,
>>>
>>> Apple no longer allows debugging of distributed apps - see R for Mac
>>> FAQ 10.17:
>>> http://mac.r-project.org/bin/macosx/RMacOSX-FAQ.html#I-cannot-attach-debugger-to-R
>>>
>>>
>>> Another (not recommended) work-around is to disable SIP.
>>>
>>> Cheers,
>>> Simon
>>>
>>>
>>>
>>>> On 3/05/2020, at 10:42 AM, Vincent Carey <stvjc using channing.harvard.edu>
>>>> wrote:
>>>>
>>>> I'd like to make use of material in
>>>>
>>>> https://kevinushey.github.io/blog/2015/04/13/debugging-with-lldb/
>>>>
>>>> But with R 4.0 I get
>>>>
>>>> %vjcair> R -d lldb
>>>>
>>>> (lldb) target create
>>>> "/Library/Frameworks/R.framework/Resources/bin/exec/R"
>>>>
>>>> Current executable set to
>>>> '/Library/Frameworks/R.framework/Resources/bin/exec/R' (x86_64).
>>>>
>>>> (lldb) run
>>>>
>>>> error: process exited with status -1 (Error 1)
>>>>
>>>> (lldb) quit
>>>>
>>>> %vjcair> which lldb
>>>>
>>>> /usr/bin/lldb
>>>>
>>>> %vjcair> lldb --version
>>>>
>>>> lldb-1100.0.30.12
>>>>
>>>> Apple Swift version 5.1.3 (swiftlang-1100.0.282.1 clang-1100.0.33.15)
>>>>
>>>>
>>>> with gdb, there is a little more info -- and a peculiar warning that
>>>> mentions /Volumes/Builds/Simon/R4/h ...
>>>>
>>>>
>>>> %vjcair> R -d gdb
>>>>
>>>> GNU gdb (GDB) 8.1
>>>>
>>>> Copyright (C) 2018 Free Software Foundation, Inc.
>>>>
>>>> License GPLv3+: GNU GPL version 3 or later
>>>> <http://gnu.org/licenses/gpl.html
>>>>>
>>>>
>>>> This is free software: you are free to change and redistribute it.
>>>>
>>>> There is NO WARRANTY, to the extent permitted by law. Type "show
>>>> copying"
>>>>
>>>> and "show warranty" for details.
>>>>
>>>> This GDB was configured as "x86_64-apple-darwin16.7.0".
>>>>
>>>> Type "show configuration" for configuration details.
>>>>
>>>> For bug reporting instructions, please see:
>>>>
>>>> <http://www.gnu.org/software/gdb/bugs/>.
>>>>
>>>> Find the GDB manual and other documentation resources online at:
>>>>
>>>> <http://www.gnu.org/software/gdb/documentation/>.
>>>>
>>>> For help, type "help".
>>>>
>>>> Type "apropos word" to search for commands related to "word"...
>>>>
>>>> Reading symbols from
>>>> /Library/Frameworks/R.framework/Resources/bin/exec/R...
>>>>
>>>> warning:
>>>> `/Volumes/Builds/Simon/R4/high-sierra-x86_64/R-4.0-branch/src/main/Rmain.o':
>>>>
>>>> can't open to read symbols: No such file or directory.
>>>>
>>>> (no debugging symbols found)...done.
>>>>
>>>> (gdb) run
>>>>
>>>> Starting program:
>>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/bin/exec/R
>>>>
>>>> Unable to find Mach task port for process-id 59032: (os/kern) failure
>>>> (0x5).
>>>>
>>>> (please check gdb is codesigned - see taskgated(8))
>>>>
>>>>> sessionInfo()
>>>>
>>>> R version 4.0.0 Patched (2020-04-27 r78309)
>>>>
>>>> Platform: x86_64-apple-darwin17.0 (64-bit)
>>>>
>>>> Running under: macOS Mojave 10.14.6
>>>>
>>>>
>>>> Matrix products: default
>>>>
>>>> BLAS:
>>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRblas.dylib
>>>>
>>>>
>>>> LAPACK:
>>>> /Library/Frameworks/R.framework/Versions/4.0/Resources/lib/libRlapack.dylib
>>>>
>>>>
>>>> --
>>>> The information in this e-mail is intended only for t...{{dropped:8}}
>>
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