Re: [Bug-apl] Error compiling a function

[Elias Mårtenson]

OK, I have come up with a way to reproduce this. This is a simplified version of a program started to fail, and when I try to )SIC after the error, I get the error.

To reproduce, first define the following operator:

∇(OP rep) N;ct

  ct←0

Lnext:

  →(ct=N)/0

  ⊣OP ⎕IO+ct

  ct←ct+1

  →Lnext

∇

Then, define some dummy values:

      next ← {⍵}

      V←1

Then run the following:

      {disp ← '.#'[⎕IO+V←next V ⊣ ⎕DL ÷20]} rep 10

SYNTAX ERROR

rep[1]  ct←0

           ^

Run )SIC to clear the stack and try again:

      )SIC

      {disp ← '.#'[⎕IO+V←next V ⊣ ⎕DL ÷20]} rep 10

SYNTAX ERROR

rep[1]  ct←0

           ^

Finally, run )SIC again, and the error is seen:

      )SIC

==============================================================================

Assertion failed: value_stack.size()

in Function:      pop

in file:          Symbol.cc:312

Call stack:

----------------------------------------

-- Stack trace at Symbol.cc:312

----------------------------------------

0x7f9212d3aec5 __libc_start_main

0x4db91d  main

0x5816e8   Workspace::immediate_execution(bool)

0x4b3747    Command::process_line()

0x4b37f6     Command::process_line(UCS_string&)

0x4b3ee0      Command::do_APL_command(std::ostream&, UCS_string&)

0x583c1d       Workspace::clear_SI(std::ostream&)

0x581597        Workspace::pop_SI(char const*)

0x53c37b         StateIndicator::~StateIndicator()

0x53e87c          UserFunction::pop_local_vars() const

0x56bfdd           UserFunction_header::pop_local_vars() const

0x54cb3c            Symbol::pop()

0x49181e             do_Assert(char const*, char const*, char const*, int)

========================================

SI stack:

Depth:    0

Exec:     0x27f5080

Safe ex:  no

Pmode:    ◊  {disp ← '.#'[⎕IO+V←next V ⊣ ⎕DL ÷20]} rep 10

PC:       3 ENDL

Stat:     {disp ← '.#'[⎕IO+V←next V ⊣ ⎕DL ÷20]} rep 10

err_code: 0x0

thrown:   at StateIndicator.cc:41

e_msg_1:  'No Error'

e_msg_2:  ''

e_msg_3:  ''

==============================================================================

*** immediate_execution() caught other exception ***

Regards,

Elias

On 17 August 2014 23:47, Elias Mårtenson <address@hidden> wrote:

I have a consistent error when recompiling a function from Emacs. I'm working on a simple way of reproducing it, but in the meantime here is the error output in case it's enough:

==============================================================================

Assertion failed: value_stack.size()

in Function:      pop

in file:          Symbol.cc:312

Call stack:

----------------------------------------

-- Stack trace at Symbol.cc:312

----------------------------------------

0x7fe3f5cf2182 

0x7fe3e0d72d44  connection_loop(void*)

0x7fe3e0d75ecc   NetworkConnection::run()

0x7fe3e0d75d61    NetworkConnection::process_command(std::string const&)

0x7fe3e0d79e4f     SicCommand::run_command(NetworkConnection&, std::vector<std::string, std::allocator<std::string> > const&)

0x583c1d      Workspace::clear_SI(std::ostream&)

0x581597       Workspace::pop_SI(char const*)

0x53c37b        StateIndicator::~StateIndicator()

0x53e87c         UserFunction::pop_local_vars() const

0x56bfdd          UserFunction_header::pop_local_vars() const

0x54cb3c           Symbol::pop()

0x49181e            do_Assert(char const*, char const*, char const*, int)

========================================

SI stack:

Depth:    0

Exec:     0x201d420

Safe ex:  no

Pmode:    ◊  {disp ← '.#'[⎕IO+V←next V ⊣ ⎕DL ÷20]} rep 10

PC:       3 ENDL

Stat:     {disp ← '.#'[⎕IO+V←next V ⊣ ⎕DL ÷20]} rep 10

err_code: 0x0

thrown:   at StateIndicator.cc:41

e_msg_1:  'No Error'

e_msg_2:  ''

e_msg_3:  ''

Regards,

Elias