[cl-dwim-devel] arithmetic error floating-point-invalid-operation

[Kambiz Darabi]

Hello,

as I'm new to this list, I would like to introduce myself. I am a lisp
newbie running a small Java software company who is looking into
alternatives for the sometimes very tedious web application
development in J2EE.

I am very impressed by your work consisting of the different libraries
which you have published. Many thanks for that.

I have been bothering Attila on IRC quite some time (thank you,
Attila!) but I think it would be a good idea to preserve some of that
discussion on this list, so you wouldn't have to answer the same
questions over and over again.


Now, to the reason for this posting.

I use SBCL 1.0.19 on Ubuntu and dwim including all dependencies from
the darcs repo. From time to time, when the system is idle (no http
requests), I have such an error.

Do you whether it is due to some problem on my side?


arithmetic error FLOATING-POINT-INVALID-OPERATION signalled
   [Condition of type FLOATING-POINT-INVALID-OPERATION]

Restarts:
 0: [ABORT] Exit debugger, returning to top level.

Backtrace:
  0: (SB-VM:SIGFPE-HANDLER #<unavailable argument> #.(SB-SYS:INT-SAP #XB79D652C) #<unavailable argument>)
  1: (SB-VM:SIGFPE-HANDLER #<unavailable argument> #.(SB-SYS:INT-SAP #XB79D652C) #<unavailable argument>)..
  2: ((FLET #:WITHOUT-INTERRUPTS-BODY-[INVOKE-INTERRUPTION]10))
  3: (SB-SYS:INVOKE-INTERRUPTION #<CLOSURE (FLET SB-UNIX::INTERRUPTION) {B79D624D}>)
  4: ((FLET SB-UNIX::RUN-HANDLER) 8 #.(SB-SYS:INT-SAP #XB79D652C) #.(SB-SYS:INT-SAP #XB79D65AC))
  5: ((FLET SB-UNIX::RUN-HANDLER) 8 #.(SB-SYS:INT-SAP #XB79D652C) #.(SB-SYS:INT-SAP #XB79D65AC))[:OPTIONA..
  6: ("foreign function: #x806401C")
  7: ("foreign function: #x8052232")
  8: ("foreign function: #x80561AD")
  9: ("foreign function: #xB7BD6F7C")
 10: (SB-IMPL::SUB-SERVE-EVENT NIL NIL NIL)
 11: (SB-SYS:WAIT-UNTIL-FD-USABLE 0 :INPUT NIL)
 12: (SB-IMPL::REFILL-INPUT-BUFFER #<SB-SYS:FD-STREAM for "standard input" {A86B9A1}>)
 13: (SB-IMPL::INPUT-CHAR/UTF-8 #<SB-SYS:FD-STREAM for "standard input" {A86B9A1}> NIL #:EOF-OBJECT)
 14: (READ-CHAR #<SB-SYS:FD-STREAM for "standard input" {A86B9A1}> NIL #:EOF-OBJECT #<unused argument>)
 15: (READ-CHAR #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDIN* {910E891}> NIL #:EOF-OBJECT #<unused argument>)
 16: (READ-PRESERVING-WHITESPACE #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDIN* {910E891}> NIL (NIL) T)
 17: (READ-PRESERVING-WHITESPACE #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDIN* {910E891}> NIL (NIL) NIL)
 18: (READ #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDIN* {910E891}> NIL (NIL) NIL)
 19: (SB-IMPL::REPL-READ-FORM-FUN #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDIN* {910E891}> #<unavailable argume..
 20: (SB-IMPL::REPL-FUN NIL)
 21: (SB-IMPL::REPL-FUN NIL)[:EXTERNAL]
 22: ((LAMBDA ()))
 23: ((LAMBDA ()))[:EXTERNAL]
 24: (SB-IMPL::%WITH-REBOUND-IO-SYNTAX #<CLOSURE (LAMBDA #) {A88D2C5}>)
 25: (SB-IMPL::TOPLEVEL-REPL NIL)
 26: (SB-IMPL::TOPLEVEL-INIT)
 27: ((LABELS SB-IMPL::RESTART-LISP))


Many thanks



Kambiz Darabi