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@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@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 <st...@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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