[STUMP] Crash in Arch Linux with SBCL 1.0.55

[Stephen Balousek]

Hi,




The relevant information from ~/.xsession-errors is:

   Caught 'The value -28580123 is not of type UNSIGNED-BYTE.' at the
   top level. Please report this.
   0: (SB-DEBUG::MAP-BACKTRACE
        #<CLOSURE (LAMBDA # :IN SB-DEBUG:BACKTRACE) {100555C56B}>
        :START
        0
        :COUNT
        100)
   1: (SB-DEBUG:BACKTRACE 100 #<SB-IMPL::STRING-OUTPUT-STREAM
   {100555C463}>)
   2: (BACKTRACE-STRING)
   3: (PERFORM-TOP-LEVEL-ERROR-ACTION
        #<TYPE-ERROR expected-type: UNSIGNED-BYTE datum: -28580123>)
   4: (SIGNAL #<TYPE-ERROR expected-type: UNSIGNED-BYTE datum: -28580123>)
   5: (ERROR TYPE-ERROR :DATUM -28580123 :EXPECTED-TYPE UNSIGNED-BYTE)
   6: (SB-KERNEL::OBJECT-NOT-TYPE-ERROR-HANDLER
        #<unavailable argument>
        #.(SB-SYS:INT-SAP #X7FFFF704E9F8)
        #<SB-ALIEN-INTERNALS:ALIEN-VALUE :SAP #X7FFFF704E3C0 :TYPE (*

        (84 21))
   7: (SB-KERNEL:INTERNAL-ERROR
        #.(SB-SYS:INT-SAP #X7FFFF704E3C0)
        #<unavailable argument>)
   8: ("foreign function: #x4180DF")

   debugger invoked on a TYPE-ERROR in thread
   #<THREAD "initial thread" RUNNING {1003BA8E23}>:
      The value -28580118 is not of type UNSIGNED-BYTE.

   Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL.

   (no restarts: If you didn't do this on purpose, please report it as
   a bug.)

   (SB-KERNEL::OBJECT-NOT-TYPE-ERROR-HANDLER
     #<unavailable argument>
     #.(SB-SYS:INT-SAP #X7FFFF704EEB0)
     #<SB-ALIEN-INTERNALS:ALIEN-VALUE :SAP #X7FFFF704E880 :TYPE (*
                                                                 (STRUCT

     (84 21))
   0]




Thanks,
- Steve

I am getting a strange, intermittent crash of StumpWM and I am looking for pointers on how to resolve it, or possible workarounds. (SB-ALIEN:STRUCT SB-VM::OS-CONTEXT-T-STRUCT))> SB-VM::OS-CONTEXT-T-STRUCT))> Can anyone tell if this is a StumpWM issue or an SBCL issue? I am thinking it is an issue with the FFI layer in SBCL, but any other interpretations would be appreciated.

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