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Re: [Bug-apl] Assertion failed in 'equal'

From: Juergen Sauermann
Subject: Re: [Bug-apl] Assertion failed in 'equal'
Date: Mon, 17 Oct 2016 12:34:13 +0200
User-agent: Mozilla/5.0 (X11; Linux i686; rv:45.0) Gecko/20100101 Thunderbird/45.2.0

Hi Ala'a

thanks, fixed in SVN 798.You will now get a DOMAIN ERROR instead of
a failed assertion.

The DOMAIN ERROR is being reported because you try to compare objects that
would be called left values in C/C++, so your code is also wrong. I would also
be careful with using A⍳B if A or B becomes large. For regular structures like


you might consider using something like

      0 ⌈ 26 ⌊ ¯97 + ⎕UCS XXX

which will decrease your execution time from O((⍴A)×(⍴B)) down to O(⍴B).

/// Jürgen

On 10/16/2016 04:51 PM, Ala'a Mohammad wrote:
I was trying to assign order to a word letters for example 'zach' is
312, I got it finally, for example for 'maine'
4 1 3 5 2

But I got the following failing assertion and wanted to check if
something related to my code or the interpreter.
I'm using
: apl -v
    Project:        GNU APL
    Version / SVN:  1.6 / 796
    Build Date:     2016-09-26 18:43:22 UTC
    Build OS:       Linux 3.13.0-37-generic x86_64
    config.status:  unknown configure options
   Archive SVN:     787

Operating system is Linuxmint 17.1 64bit (Linux rock 3.13.0-37-generic
#64-Ubuntu SMP Mon Sep 22 21:28:38 UTC 2014 x86_64 x86_64 x86_64




12 0 8 13 4
1 4 2 0 3
equal() called on object of classLvalCell

Assertion failed: 0
in Function:      equal
in file:          Cell.cc:117

Call stack:

-- Stack trace at Cell.cc:117
0x7fb94a6e9f45 __libc_start_main
0x446105  main
0x56b84d   Workspace::immediate_execution(bool)
0x487e89    Command::process_line()
0x487f2d     Command::do_APL_expression(UCS_string&)
0x4923c8      Executable::execute_body() const
0x5201b0       StateIndicator::run()
0x4c57e9        Prefix::reduce_statements()
0x4c4d59         Prefix::reduce_MISC_F_B_()
0x460d8f          Bif_F12_SORT_ASC::eval_B(Value_P)
0x45fdaf           Bif_F12_SORT::sort(Value_P, Sort_order)
0x47746a            Cell::greater_vec(Cell const*, Cell const*, void const*)
0x4552df              do_Assert(char const*, char const*, char const*, int)

SI stack:

Depth:      79
Exec:       0x1796ad0
Safe exec:  0
Pmode:    ◊  (⍋abc⍳'maine')←⍳5
PC:       9 ENDL
Stat:     (⍋abc⍳'maine')←⍳5
err_code: 0x0
thrown:   at StateIndicator.cc:39
e_msg_1:  'No Error'
e_msg_2:  ''
e_msg_3:  ''

Depth:      78
Exec:       0x17b2af0
Safe exec:  0
Pmode:    ◊  abc[s]
PC:       4 ENDL
Stat:     abc[s]
err_code: 0x50005
thrown:   at Value.cc:1050
e_msg_1:  'INDEX ERROR+'
e_msg_2:  '      abc[s]'
e_msg_3:  '      ^  ^'

Depth:      77
Exec:       0x17b2820
Safe exec:  0
Pmode:    ◊  s⌷abc
PC:       3 ENDL
Stat:     s⌷abc
err_code: 0x50002
thrown:   at PrimitiveFunction.cc:2308
e_msg_1:  'RANK ERROR'
e_msg_2:  '      s⌷abc'
e_msg_3:  '      ^ ^'

Depth:      76
Exec:       0x17b2e30
Safe exec:  0
Pmode:    ◊  abs⍳s
PC:       2 'abs
Stat:     abs⍳s
err_code: 0x30001
thrown:   at Symbol.cc:662
e_msg_1:  'VALUE ERROR'
e_msg_2:  '      abs⍳s'
e_msg_3:  '      ^'

Depth:      75
Exec:       0x17d0ae0
Safe exec:  0
Pmode:    ◊  abs[s]
PC:       3 'abs
Stat:     abs[s]
err_code: 0x30001
thrown:   at Symbol.cc:662
e_msg_1:  'VALUE ERROR'
e_msg_2:  '      abs[s]'
e_msg_3:  '      ^'

Depth:      74
Exec:       0x17a1e40
Safe exec:  0
Pmode:    ∇ λ1[1]
PC:       13 ←

Assertion failed: idx < items_valid
in Function:      operator[]
in file:          Simple_string.hh:140

Call stack:
*** do_Assert() called recursively ***

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