[Bug-apl] Why is there a stack trace when I caused a length error?

[alexweiner]

Hi bug-apl,

 

I'm not sure if this is a error, or if I somehow configured a setting to do this (which I doubt happened).

I was not booted out from APL. 

 

(⊂(⍳⍴f)-1)+¨f

*** Attempt to start a new joblist at ScalarFunction.cc:426 while joblist from ScalarFunction.cc:426 is not finished

----------------------------------------
-- Stack trace at Parallel.hh:457
----------------------------------------
0x7f3c04cdeec5 __libc_start_main
0x442d35 main
0x577bad Workspace::immediate_execution(bool)
0x48c39a Command::process_line()
0x48c478 Command::do_APL_expression(UCS_string&)
0x49756b Executable::execute_body() const
0x5254e0 StateIndicator::run()
0x4cc644 Prefix::reduce_statements()
0x4c7165 Prefix::reduce_A_F_B_()
0x521726 Bif_F12_MINUS::eval_AB(Value_P, Value_P)
0x51a7a4 ScalarFunction::eval_scalar_AB(Value_P, Value_P, ErrorCode (Cell::*)(Cell*, Cell const*) const)
========================================
LENGTH ERROR
(⊂(⍳⍴f)-1)+¨f
^           ^

Also, I am ⎕io←1

and here is f:

f←8⍴0 ⍝ prolog ≡1
(,f)[⍳8]←00 00 00 00 00 00 00 00
((⎕IO+0)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+0)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+0)⊃f))[24+⍳6]←24 25 26 27 28 29
((⎕IO+1)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+1)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+1)⊃f))[24+⍳6]←24 25 26 27 28 29
((⎕IO+2)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+2)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+2)⊃f))[24+⍳6]←24 25 26 27 28 29
((⎕IO+3)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+3)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+3)⊃f))[24+⍳6]←24 25 26 27 28 29
((⎕IO+4)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+4)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+4)⊃f))[24+⍳6]←24 25 26 27 28 29
((⎕IO+5)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+5)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+5)⊃f))[24+⍳6]←24 25 26 27 28 29
((⎕IO+6)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+6)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+6)⊃f))[24+⍳6]←24 25 26 27 28 29
((⎕IO+7)⊃f)←⊂30⍴0 ⍝ prolog ≡2
(,((⎕IO+7)⊃f))[⍳24]←0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
(,((⎕IO+7)⊃f))[24+⍳6]←24 25 26 27 28 29