Iâm not sure whatâs going on with your setup, but this is what I get on my
machine when I press Ctrl-C just after the R prompt comes up when started with
âR -d gdb":
Program received signal SIGINT, Interrupt.
0x00007fff874179aa in select$DARWIN_EXTSN ()
(gdb) bt
#0 0x00007fff874179aa in select$DARWIN_EXTSN ()
#1 0x0000000100178bcf in R_SelectEx (n=1, readfds=0x100316bc0, writefds=0x0,
exceptfds=0x0, timeout=0x0, intr=0x100178800 <handleInterrupt>) at sys-std.c:154
#2 0x000000010017960b in R_checkActivityEx [inlined] () at :331
#3 0x000000010017960b in Rstd_ReadConsole (prompt=0x7fff73ea07a8
"P\003�s�", buf=0x7fff5fbfe820 "`�_�", len=1606412320,
addtohistory=1606407976) at sys-std.c:920
#4 0x00000001000c4d19 in Rf_ReplIteration (rho=0x1018345f8,
savestack=1606412384, browselevel=0, state=0x7fff5fbfd728) at main.c:209
#5 0x00000001000c5643 in R_ReplConsole [inlined] () at :307
#6 0x00000001000c5643 in run_Rmainloop () at main.c:984
#7 0x0000000100000e5b in main ()
Version info:
OS X: 10.9.1 (Mavericks)
R: 3.0.2 (from CRAN)
gdb: 6.3.50-20050815 (Apple version gdb-1824)
Xcode: 5.0.2
Davor
On Jan 19, 2014, at 10:58 AM, Gábor Csárdi <csardi.ga...@gmail.com> wrote:
> On Sun, Jan 19, 2014 at 1:53 PM, Davor Cubranic <cubra...@stat.ubc.ca> wrote:
> On Jan 17, 2014, at 6:17 AM, Gábor Csárdi <csardi.ga...@gmail.com> wrote:
>
> > Small note: if you are using a recent version of OSX, then gdb is
> > essentially useless, but you can use llvm, which is nicer in many respects,
> > anyway.
>
>
> What do you mean by this? Gdb is a debugger, and LLVM is a compiler
> infrastructure. Perhaps you mean âlldbâ?
>
> Yes, I meant lldb, sorry.
>
>
> Why do you say gdb is useless anyways? I havenât seen any problems with it
> on Mavericks.
>
> Depends what compiler you use, I guess. On a CRAN version of R, this is what
> I get with gdb, after just pressing CTRL+C:
>
> Program received signal SIGINT, Interrupt.
> 0x00007fff8fc449aa in ?? ()
> (gdb) bt
> #0 0x00007fff8fc449aa in ?? ()
> #1 0x0000000100178bcf in ?? ()
> #2 0x0000040000000400 in ?? ()
> #3 0x0000000079fa5350 in ?? ()
> #4 0x0000000100178800 in ?? ()
> #5 0x00007fff79fa57a8 in ?? ()
> #6 0x0000000000000000 in ?? ()
> (gdb)
>
> which is not very useful. This is what I get with lldb:
>
> Process 52794 stopped
> * thread #1: tid = 0x2c0802, 0x00007fff8fc449aa
> libsystem_kernel.dylib`select$DARWIN_EXTSN + 10, queue =
> 'com.apple.main-thread, stop reason = signal SIGSTOP
> frame #0: 0x00007fff8fc449aa libsystem_kernel.dylib`select$DARWIN_EXTSN +
> 10
> libsystem_kernel.dylib`select$DARWIN_EXTSN + 10:
> -> 0x7fff8fc449aa: jae 0x7fff8fc449b4 ; select$DARWIN_EXTSN +
> 20
> 0x7fff8fc449ac: movq %rax, %rdi
> 0x7fff8fc449af: jmpq 0x7fff8fc4119a ; cerror
> 0x7fff8fc449b4: ret
> (lldb) bt
> * thread #1: tid = 0x2c0802, 0x00007fff8fc449aa
> libsystem_kernel.dylib`select$DARWIN_EXTSN + 10, queue =
> 'com.apple.main-thread, stop reason = signal SIGSTOP
> frame #0: 0x00007fff8fc449aa libsystem_kernel.dylib`select$DARWIN_EXTSN +
> 10
> frame #1: 0x0000000100178bcf libR.dylib`R_SelectEx(n=1,
> readfds=0x0000000100316bc0, writefds=0x0000000000000000,
> exceptfds=0x0000000000000000, timeout=<unavailable>, intr=<unavailable>) +
> 207 at sys-std.c:154
> frame #2: 0x000000010017960b libR.dylib`Rstd_ReadConsole [inlined]
> R_checkActivityEx(ignore_stdin=0) + 266 at sys-std.c:331
> frame #3: 0x0000000100179501
> libR.dylib`Rstd_ReadConsole(prompt=0x00007fff79fa57a8,
> buf=0x00007fff5fbfe910, len=1606412560, addtohistory=<unavailable>) + 1825 at
> sys-std.c:920
> frame #4: 0x00000001000c4d19
> libR.dylib`Rf_ReplIteration(rho=0x00000001008549f8, savestack=1606412624,
> browselevel=0, state=<unavailable>) + 185 at main.c:209
> frame #5: 0x00000001000c5643 libR.dylib`run_Rmainloop [inlined]
> R_ReplConsole(browselevel=0, savestack=0, rho=0x00000001008549f8) + 116 at
> main.c:307
> frame #6: 0x00000001000c55cf libR.dylib`run_Rmainloop + 79 at main.c:984
> frame #7: 0x0000000100000e5b R`main + 27
> frame #8: 0x0000000100000e34 R`start + 52
> (lldb)
>
> I admit, "useless" was an overreaction, and maybe you can fix gdb somehow. I
> just did not spend any time on trying to fix it.
>
> Gabor
>
>
> Davor
>
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