>>>>> "BDR" == Prof Brian Ripley <[EMAIL PROTECTED]>
>>>>> on Tue, 11 Jul 2006 10:54:15 +0100 (BST) writes:
BDR> On Tue, 11 Jul 2006, Martin Maechler wrote:
>> Hi Robin,
>>
>> thanks for the extra info. I have no clue what the problem
>> might be.
>>
>> But from R-level debugging (and the R traceback you wrote
>> originally),
>> I assume you could trigger the problem already by a simple
>>
>> median(rep(1000, 10))
>>
>> is that the case? If yes, please follow up on R-devel.
BDR> I don't see why you assume so:
BDR> there are multitudinous paths through qsort.
yes, but I had Robin's data (*) and used debug(hist.default) :
diff(breaks) *was* identical to rep(1000, 10) for the data
Robin posted.
>> In any case, let's wait for others (Mac specialists and/or other
>> R-core members) to voice ideas.
BDR> I checked this under valgrind, which normally shows up such errors,
and
BDR> found nothing, even with gctorture on (and valgrind instrumentation of
BDR> R's memory management on).
BDR> You used the dput and Robin used load(), so presumably on not exactly
the
BDR> same object.
ahh yes, good point...
(*) hence means I only had the dput() version of his data.
BDR> I think Robin needs to test what he actually gave us, to be
BDR> sure. If that is the case, I suspect the compiler.
>> Martin
>>
>>
>>
>> >>>>> "Robin" == Robin Hankin <[EMAIL PROTECTED]>
>> >>>>> on Tue, 11 Jul 2006 10:04:34 +0100 writes:
>>
Robin> Hi Martin
Robin> On 11 Jul 2006, at 09:25, Martin Maechler wrote:
>>
>> >> I assume this is specific to your installation of R-devel
>> >> (R-2.4.0 "unstable"). If I use your 'out',
>> >> hist(out^4, col = "gray")
>> >> works just fine consistently.
>> >>
>> >> Could it be a compiler / linker mismatch
>> >> on your Mac? Also, can you run "under the debugger"
>> >> 'R -d gdb' (from a commandline) ?
>> >>
>> >> This should allow a traceback ('backtrace', abbreviated 'bt' in "gdb")
>> >> of the C call stack.
>>
>>
>>
Robin> transcript follows:
>>
>>
Robin> octopus:~/scratch% ./Rd/R.framework/Versions/2.4/Resources/bin/R -d
gdb
Robin> GNU gdb 6.1-20040303 (Apple version gdb-434) (Wed Nov 2 17:28:16
GMT
Robin> 2005)
Robin> Copyright 2004 Free Software Foundation, Inc.
Robin> GDB is free software, covered by the GNU General Public License, and
Robin> you are
Robin> welcome to change it and/or distribute copies of it under certain
Robin> conditions.
Robin> Type "show copying" to see the conditions.
Robin> There is absolutely no warranty for GDB. Type "show warranty" for
Robin> details.
Robin> This GDB was configured as "powerpc-apple-darwin"...Reading symbols
Robin> for shared libraries ... done
>>
Robin> (gdb) R
Robin> Starting program: /Users/rksh/scratch/Rd/R.framework/Versions/2.4/
Robin> Resources/bin/exec/R
Robin> Reading symbols for shared libraries ...................+ done
>>
Robin> R version 2.4.0 Under development (unstable) (2006-07-09 r38523)
Robin> Copyright (C) 2006 The R Foundation for Statistical Computing
Robin> ISBN 3-900051-07-0
>>
Robin> R is free software and comes with ABSOLUTELY NO WARRANTY.
Robin> You are welcome to redistribute it under certain conditions.
Robin> Type 'license()' or 'licence()' for distribution details.
>>
Robin> R is a collaborative project with many contributors.
Robin> Type 'contributors()' for more information and
Robin> 'citation()' on how to cite R or R packages in publications.
>>
Robin> Type 'demo()' for some demos, 'help()' for on-line help, or
Robin> 'help.start()' for an HTML browser interface to help.
Robin> Type 'q()' to quit R.
>>
Robin> Reading symbols for shared
Robin> libraries ..........................................................
Robin> done
Robin> Reading symbols for shared libraries . done
Robin> Reading symbols for shared libraries . done
>> >> load("~/f")
>> >> hist(out^4)
>>
Robin> Program received signal EXC_BAD_ACCESS, Could not access memory.
Robin> Reason: KERN_PROTECTION_FAILURE at address: 0x00000012
Robin> R_qsort (v=0x2855858, i=1, j=2) at qsort-body.c:126
Robin> 126 vt = v[i + 1];
Robin> (gdb) bt
Robin> #0 R_qsort (v=0x2855858, i=1, j=2) at qsort-body.c:126
Robin> #1 0x0111e5d4 in do_qsort (call=0x1d0ed04, op=0x1, args=0x1d0b7f8,
Robin> rho=0x4) at qsort.c:89
Robin> #2 0x010c9a1c in do_internal (call=0x1d0b7f8, op=0x1, args=0x0,
Robin> env=0x1d0c494) at names.c:1091
Robin> #3 0x01099bb4 in Rf_eval (e=0x1d0ec94, rho=0x1d0c494) at eval.c:425
Robin> #4 0x0109ba10 in do_set (call=0x1d0fb78, op=0x180a390,
Robin> args=0x1d0fb94, rho=0x1d0c494) at eval.c:1337
Robin> #5 0x01099bb4 in Rf_eval (e=0x1d0fb78, rho=0x1d0c494) at eval.c:425
Robin> #6 0x0109bc60 in do_begin (call=0x1d0fb40, op=0x180a2cc,
Robin> args=0x1d0fb5c, rho=0x1d0c494) at eval.c:1101
Robin> #7 0x01099bb4 in Rf_eval (e=0x1d0fb40, rho=0x1d0c494) at eval.c:425
Robin> #8 0x01099bb4 in Rf_eval (e=0x1d0fa44, rho=0x1d0c494) at eval.c:425
Robin> #9 0x0109ba10 in do_set (call=0x1d0f9f0, op=0x180a390,
Robin> args=0x1d0fa0c, rho=0x1d0c494) at eval.c:1337
Robin> #10 0x01099bb4 in Rf_eval (e=0x1d0f9f0, rho=0x1d0c494) at eval.c:425
Robin> #11 0x0109bc60 in do_begin (call=0x1d0f5e4, op=0x180a2cc,
Robin> args=0x1d0f9d4, rho=0x1d0c494) at eval.c:1101
Robin> #12 0x01099bb4 in Rf_eval (e=0x1d0f5e4, rho=0x1d0c494) at eval.c:425
Robin> #13 0x01099bb4 in Rf_eval (e=0x1d0f520, rho=0x1d0c494) at eval.c:425
Robin> #14 0x0109bc60 in do_begin (call=0x1d10f18, op=0x180a2cc,
Robin> args=0x1d0f504, rho=0x1d0c494) at eval.c:1101
Robin> #15 0x01099bb4 in Rf_eval (e=0x1d10f18, rho=0x1d0c494) at eval.c:425
Robin> #16 0x0109d0ac in Rf_applyClosure (call=0x1d1353c, op=0x1d10d58,
Robin> arglist=0x1d0d2ec, rho=0x1d13830, suppliedenv=0x181d304) at
eval.c:615
Robin> #17 0x01099d94 in Rf_eval (e=0x1d1353c, rho=0x1d13830) at eval.c:456
Robin> #18 0x0109b008 in Rf_DispatchOrEval (call=0x1d134cc, op=0x180b978,
Robin> generic=0x11d74d0 "[", args=0x1d13504, rho=0x1d13830,
ans=0xbfffa248,
Robin> dropmissing=0, argsevald=0) at eval.c:1758
Robin> #19 0x0115a828 in do_subset (call=0x1d134cc, op=0x180b978, args=0x0,
Robin> rho=0x1d13830) at subset.c:527
Robin> #20 0x01099bb4 in Rf_eval (e=0x1d134cc, rho=0x1d13830) at eval.c:425
Robin> #21 0x01099a5c in Rf_eval (e=0x1d118a0, rho=0x1d1192c) at eval.c:402
Robin> #22 0x0109ae04 in Rf_evalList (el=0x1b4f9dc, rho=0x1d1192c) at
eval.c:
Robin> 1417
Robin> #23 0x010c9980 in do_internal (call=0x1b4f9dc, op=0x1,
Robin> args=0x1b4fa14, env=0x1d1192c) at names.c:1087
Robin> #24 0x01099bb4 in Rf_eval (e=0x1b4fa30, rho=0x1d1192c) at eval.c:425
Robin> #25 0x0109d0ac in Rf_applyClosure (call=0x1d13424, op=0x1b4fa84,
Robin> arglist=0x1d118bc, rho=0x1d13830, suppliedenv=0x181d304) at
eval.c:615
Robin> #26 0x01099d94 in Rf_eval (e=0x1d13424, rho=0x1d13830) at eval.c:456
Robin> #27 0x0109ae7c in Rf_evalList (el=0x1d13408, rho=0x1d13830) at
eval.c:
Robin> 1427
Robin> #28 0x01099c04 in Rf_eval (e=0x1d143b0, rho=0x1d13830) at eval.c:435
Robin> #29 0x0109bc60 in do_begin (call=0x1d14378, op=0x180a2cc,
Robin> args=0x1d14394, rho=0x1d13830) at eval.c:1101
Robin> #30 0x01099bb4 in Rf_eval (e=0x1d14378, rho=0x1d13830) at eval.c:425
Robin> #31 0x01099bb4 in Rf_eval (e=0x1d140f4, rho=0x1d13830) at eval.c:425
Robin> #32 0x0109bc60 in do_begin (call=0x1d14654, op=0x180a2cc,
Robin> args=0x1d140d8, rho=0x1d13830) at eval.c:1101
Robin> #33 0x01099bb4 in Rf_eval (e=0x1d14654, rho=0x1d13830) at eval.c:425
Robin> #34 0x0109d0ac in Rf_applyClosure (call=0x1fa96bc, op=0x1d15a7c,
Robin> arglist=0x1d137dc, rho=0x1d39024, suppliedenv=0x181d304) at
eval.c:615
Robin> #35 0x01099d94 in Rf_eval (e=0x1fa96bc, rho=0x1d39024) at eval.c:456
Robin> #36 0x0109ae7c in Rf_evalList (el=0x1fa96a0, rho=0x1d39024) at
eval.c:
Robin> 1427
Robin> #37 0x01099c04 in Rf_eval (e=0x1fa9668, rho=0x1d39024) at eval.c:435
Robin> #38 0x0109ba10 in do_set (call=0x1fa95c0, op=0x180a390,
Robin> args=0x1fa95dc, rho=0x1d39024) at eval.c:1337
Robin> #39 0x01099bb4 in Rf_eval (e=0x1fa95c0, rho=0x1d39024) at eval.c:425
Robin> #40 0x0109bc60 in do_begin (call=0x1facdc0, op=0x180a2cc,
Robin> args=0x1fa95a4, rho=0x1d39024) at eval.c:1101
Robin> #41 0x01099bb4 in Rf_eval (e=0x1facdc0, rho=0x1d39024) at eval.c:425
Robin> #42 0x0109d0ac in Rf_applyClosure (call=0x1d3a2c4, op=0x1fad6f4,
Robin> arglist=0x1d3a040, rho=0x1d3a094, suppliedenv=0x1d3a21c) at
eval.c:615
Robin> #43 0x010cc7e0 in Rf_usemethod (generic=0x1f69540 "hist",
Robin> obj=0x1fad6f4, call=0x2, args=0x4, rho=0x1d3a094, callrho=0x181d2e8,
Robin> defrho=0x2aa59f8, ans=0xbfffe148) at objects.c:311
Robin> #44 0x010ccb20 in do_usemethod (call=0x1d3af24, op=0x1,
Robin> args=0x1d3af40, env=0x1d3a094) at objects.c:395
Robin> #45 0x01099bb4 in Rf_eval (e=0x1d3af24, rho=0x1d3a094) at eval.c:425
Robin> #46 0x0109d0ac in Rf_applyClosure (call=0x1d3b724, op=0x1d3ab88,
Robin> arglist=0x1d3a040, rho=0x181d2e8, suppliedenv=0x181d304) at
eval.c:615
Robin> #47 0x01099d94 in Rf_eval (e=0x1d3b724, rho=0x181d2e8) at eval.c:456
Robin> #48 0x010b7d30 in Rf_ReplIteration (rho=0x181d2e8, savestack=0,
Robin> browselevel=0, state=0xbfffed88) at main.c:254
Robin> #49 0x010b7e88 in R_ReplConsole (rho=0x181d2e8, savestack=0,
Robin> browselevel=0) at main.c:302
Robin> #50 0x010b8198 in run_Rmainloop () at main.c:913
Robin> #51 0x00002cec in main (ac=42293336, av=0x1) at Rmain.c:33
Robin> (gdb)
>>
>>
Robin> --
Robin> Robin Hankin
Robin> Uncertainty Analyst
Robin> National Oceanography Centre, Southampton
Robin> European Way, Southampton SO14 3ZH, UK
Robin> tel 023-8059-7743
>>
Robin> ______________________________________________
Robin> R-devel@r-project.org mailing list
Robin> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>> ______________________________________________
>> R-devel@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>>
>>
BDR> --
BDR> Brian D. Ripley, [EMAIL PROTECTED]
BDR> Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
BDR> University of Oxford, Tel: +44 1865 272861 (self)
BDR> 1 South Parks Road, +44 1865 272866 (PA)
BDR> Oxford OX1 3TG, UK Fax: +44 1865 272595
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