[Sbcl-devel] debugging problem

[Cyrus H. <ch...@bo...>]

while trying to debug rucksack, when adding a (break) to btree-insert  
and attempting to get some info on the local variables in the frame,  
I get the following error:

segmentation violation at #X10BB14A3
    [Condition of type SIMPLE-ERROR]

Restarts:
   0: [ABORT] Return to sldb level 1.
   1: [CONTINUE] Return from BREAK.
   2: [ABORT] Abort #<RUCKSACK:STANDARD-TRANSACTION #337746306300000  
with 1 dirty object>
   3: [RETRY] Retry #<RUCKSACK:STANDARD-TRANSACTION #337746306300000  
with 1 dirty object>
   4: [ABORT-REQUEST] Abort handling SLIME request.
   5: [ABORT] Exit debugger, returning to top level.

Backtrace:
   0: ((FLET #:G199))
   1: (SB-UNIX::SIGSEGV-HANDLER #<unavailable argument> #<unavailable  
argument> #.(SB-SYS:INT-SAP #X022068E8))
   2: (SB-SYS:INVOKE-INTERRUPTION #<CLOSURE (LAMBDA #) {120601ED}>)
   3: ("foreign function: call_into_lisp")
   4: ("foreign function: funcall3")
   5: ("foreign function: interrupt_handle_now")
   6: ("foreign function: _sigtramp")
   7: (TYPE-OF #<error printing object>)
   8: ((FLET SB-IMPL::PRINT-DESCRIPTION))
   9: (SB-IMPL::%PRINT-UNREADABLE-OBJECT #<error printing object>)
10: ((LAMBDA ()))
11: ((LAMBDA (SWANK-BACKEND::FN)) #<CLOSURE (LAMBDA #) {1205ED75}>)
12: (SWANK::CALL-WITH-BUFFER-SYNTAX #<CLOSURE (LAMBDA #) {1205ED75}>)
13: ((LAMBDA ()))
14: (SWANK::CALL-WITH-BINDINGS ((*PRINT-PRETTY* . T) (*PRINT-LEVEL* .  
4) (*PRINT-LENGTH* . 10) (*PRINT-CIRCLE* . T) (*PRINT-READABLY*)  
(*PRINT-PPRINT-DISPATCH* . #<SB-PRETTY:PPRINT-DISPATCH-TABLE  
{11881019}>) (*PRINT-GENSYM* . T) (*PRINT-BASE* . 10) (*PRINT-RADIX*)  
(*PRINT-ARRAY* . T) ...) #<CLOSURE (LAMBDA #) {11D9546D}>)
15: (SB-INT:SIMPLE-EVAL-IN-LEXENV (SWANK:FRAME-LOCALS-FOR-EMACS 1)  
#<NULL-LEXENV>)
16: ((LAMBDA ()))
17: ((LAMBDA (SWANK-BACKEND::HOOK SWANK-BACKEND::FUN)) #<FUNCTION  
SWANK:SWANK-DEBUGGER-HOOK> #<CLOSURE (LAMBDA #) {11D9530D}>)
18: (SWANK::SLDB-LOOP 1)
19: ((LAMBDA (SWANK-BACKEND::DEBUGGER-LOOP-FN)) #<FUNCTION (LAMBDA #)  
{117155AD}>)
--more--

don't know if this is a swank or an sbcl problem, but something seems  
wrong...

Cyrus