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fretry and unwinding
- To: bug-lisp at MIT-AI
- Subject: fretry and unwinding
- From: DAVE.TOURETZKY at CMU-10A
- Date: Thu, 17 May 79 10:34:00 GMT
- Original-date: 17 May 1979 0634-EDT
I don't think fretry is unwinding the pdl far enough. If I
have a stack frame that looks like (EVAL -251386 (GORP) -249423)
and I do (FRETRY -251386 '(EVAL () (FROZ) ())), the call to FROZ
should replace the call to GORP, right? But instead, FROZ appears
just below GORP on the stack. In other words, fretry has a fencepost
error when counting functions to unwind off the pdl.