[Info-vax] DCL crashing bug update

Volker Halle volker_halle at hotmail.com
Tue Jul 25 07:41:36 EDT 2017


The DCL process crash happens in [DCL]RECALLSUB GLOBAL Routine dcl$put_segment in the following instruction stream:

SDA> exa/ins 7AF98598-20;20
DCL+8A578:      STQ             FP,#X0018(SP)
DCL+8A57C:      BIS             R31,SP,FP
DCL+8A580:      BIS             R31,R27,R1
DCL+8A584:      LDL             R9,#XFFD8(R10)
DCL+8A588:      ADDL            R9,#X02,R9
DCL+8A58C:      SUBL            R9,R18,R18
DCL+8A590:      CMPULT          R9,R16,R19
DCL+8A594:      CMOVEQ          R19,R18,R9
DCL+8A598:      LDQ_U           R21,(R9)       <<< ACCVIO here

I'll leave it to the current DCL maintainer to debug and fix this 'artificially created problem'.

Volker.



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