Problem with SystemStackError

ruby-talk
1

Hi!
I got the following problem:

?> a = (0...size).to_a
>> b = [(0...size).to_a,a.map(&:to_s)].transpose.values_at(*((0...120).to_a))
=> [[0, "0"], [1, "1"], [2, "2"], [3, "3"], [4, "4"], [5, "5"], [6, "6"], [7, "7"], [8, "8"], [9, "9"], [10, "10"], [11, "11"], [12, "12"], [13, "13"], [14, "14"], [15, "15"], [16, "16"], [17, "17"], [18, "18"], [19, "19"], [20, "20"], [21, "21"], [22, "22"], [23, "23"], [24, "24"], [25, "25"], [26, "26"], [27, "27"], [28, "28"], [29, "29"], [30, "30"], [31, "31"], [32, "32"], [33, "33"], [34, "34"], [35, "35"], [36, "36"], [37, "37"], [38, "38"], [39, "39"], [40, "40"], [41, "41"], [42, "42"], [43, "43"], [44, "44"], [45, "45"], [46, "46"], [47, "47"], [48, "48"], [49, "49"], [50, "50"], [51, "51"], [52, "52"], [53, "53"], [54, "54"], [55, "55"], [56, "56"], [57, "57"], [58, "58"], [59, "59"], [60, "60"], [61, "61"], [62, "62"], [63, "63"], [64, "64"], [65, "65"], [66, "66"], [67, "67"], [68, "68"], [69, "69"], [70, "70"], [71, "71"], [72, "72"], [73, "73"], [74, "74"], [75, "75"], [76, "76"], [77, "77"], [78, "78"], [79, "79"], [80, "80"], [81, "81"], [82, "82"], [83, "83"], [84, "84"], [85, "85"], [86, "86"], [87, "87"], [88, "88"], [89, "89"], [90, "90"], [91, "91"], [92, "92"], [93, "93"], [94, "94"], [95, "95"], [96, "96"], [97, "97"], [98, "98"], [99, "99"], [100, "100"], [101, "101"], [102, "102"], [103, "103"], [104, "104"], [105, "105"], [106, "106"], [107, "107"], [108, "108"], [109, "109"], [110, "110"], [111, "111"], [112, "112"], [113, "113"], [114, "114"], [115, "115"], [116, "116"], [117, "117"], [118, "118"], [119, "119"]]
>> b = [(0...size).to_a,a.map(&:to_s)].transpose.values_at(*((0...a.size).to_a))
SystemStackError: stack level too deep
     from /usr/lib/ruby/1.9.1/irb/workspace.rb:80
Maybe IRB bug!
>> size
=> 162000

[ram@thingol:~/src/git/extcsv/extcsv/trunk]ruby-v
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]

Is this really a bug or do I misuse something?

thanks
ralf

2

it works with jruby-1.6.3

···

On 04/24/2012 02:07 PM, Ralf Mueller wrote:

Hi!
I got the following problem:

?> a = (0...size).to_a
>> b = [(0...size).to_a,a.map(&:to_s)].transpose.values_at(*((0...120).to_a))
=> [[0, "0"], [1, "1"], [2, "2"], [3, "3"], [4, "4"], [5, "5"], [6, "6"], [7, "7"], [8, "8"], [9, "9"], [10, "10"], [11, "11"], [12, "12"], [13, "13"], [14, "14"], [15, "15"], [16, "16"], [17, "17"], [18, "18"], [19, "19"], [20, "20"], [21, "21"], [22, "22"], [23, "23"], [24, "24"], [25, "25"], [26, "26"], [27, "27"], [28, "28"], [29, "29"], [30, "30"], [31, "31"], [32, "32"], [33, "33"], [34, "34"], [35, "35"], [36, "36"], [37, "37"], [38, "38"], [39, "39"], [40, "40"], [41, "41"], [42, "42"], [43, "43"], [44, "44"], [45, "45"], [46, "46"], [47, "47"], [48, "48"], [49, "49"], [50, "50"], [51, "51"], [52, "52"], [53, "53"], [54, "54"], [55, "55"], [56, "56"], [57, "57"], [58, "58"], [59, "59"], [60, "60"], [61, "61"], [62, "62"], [63, "63"], [64, "64"], [65, "65"], [66, "66"], [67, "67"], [68, "68"], [69, "69"], [70, "70"], [71, "71"], [72, "72"], [73, "73"], [74, "74"], [75, "75"], [76, "76"], [77, "77"], [78, "78"], [79, "79"], [80, "80"], [81, "81"], [82, "82"], [83, "83"], [84, "84"], [85, "85"], [86, "86"], [87, "87"], [88, "88"], [89, "89"], [90, "90"], [91, "91"], [92, "92"], [93, "93"], [94, "94"], [95, "95"], [96, "96"], [97, "97"], [98, "98"], [99, "99"], [100, "100"], [101, "101"], [102, "102"], [103, "103"], [104, "104"], [105, "105"], [106, "106"], [107, "107"], [108, "108"], [109, "109"], [110, "110"], [111, "111"], [112, "112"], [113, "113"], [114, "114"], [115, "115"], [116, "116"], [117, "117"], [118, "118"], [119, "119"]]
>> b = [(0...size).to_a,a.map(&:to_s)].transpose.values_at(*((0...a.size).to_a))
SystemStackError: stack level too deep
    from /usr/lib/ruby/1.9.1/irb/workspace.rb:80
Maybe IRB bug!
>> size
=> 162000

[ram@thingol:~/src/git/extcsv/extcsv/trunk]ruby-v
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]

Is this really a bug or do I misuse something?

thanks
ralf

3

Hi,

It seems to be a memory limitation of IRB. When I replace a.size (i. e.
162_000) with a smaller number like 130_000, it does work.

Anyway, I have no idea what you are trying to do. IRB certainly isn't
meant for displaying a gigantic number of arrays (and your code is
rather inefficient, because you're are creating lots of unneccessary
temporary arrays).

···

--
Posted via http://www.ruby-forum.com/.

4

See bug splat with many arguments on ruby tracker.

···

On Tue, Apr 24, 2012 at 10:16:21PM +0900, Jan E. wrote:

Hi,

It seems to be a memory limitation of IRB. When I replace a.size (i. e.
162_000) with a smaller number like 130_000, it does work.

Anyway, I have no idea what you are trying to do. IRB certainly isn't
meant for displaying a gigantic number of arrays (and your code is
rather inefficient, because you're are creating lots of unneccessary
temporary arrays).

--
Posted via http://www.ruby-forum.com/\.

--

The monitor needs another box of pixels.

5

I extracted it from scripts, which shows this error. there is no difference between irb and ruby concerning this error.
btw - representing results can be suppressed by setting conf.return_format=''

regards
ralf

···

On 04/24/2012 03:16 PM, Jan E. wrote:

Hi,

It seems to be a memory limitation of IRB. When I replace a.size (i. e.
162_000) with a smaller number like 130_000, it does work.

Anyway, I have no idea what you are trying to do. IRB certainly isn't
meant for displaying a gigantic number of arrays (and your code is
rather inefficient, because you're are creating lots of unneccessary
temporary arrays).

6

Thanks for the hint, it seems to be related to variable length argument list. it's postponed to ruby 2.0.

cheers
ralf

···

On 04/24/2012 10:13 PM, Ondřej Bílka wrote:

See bug splat with many arguments on ruby tracker.
On Tue, Apr 24, 2012 at 10:16:21PM +0900, Jan E. wrote: