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raise should not change continuation
Marc Feeley
(12 Aug 2002 12:09 UTC)
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Re: raise should not change continuation
sperber@xxxxxx
(12 Aug 2002 12:45 UTC)
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Re: raise should not change continuation Marc Feeley (12 Aug 2002 14:22 UTC)
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Re: raise should not change continuation
sperber@xxxxxx
(12 Aug 2002 14:35 UTC)
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Re: raise should not change continuation
Marc Feeley
(12 Aug 2002 14:57 UTC)
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Re: raise should not change continuation
sperber@xxxxxx
(12 Aug 2002 15:08 UTC)
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Re: raise should not change continuation
Richard Kelsey
(13 Aug 2002 01:17 UTC)
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Re: raise should not change continuation Marc Feeley 12 Aug 2002 14:22 UTC
> Marc> In SRFI 18 the exception handler must be called with the same > Marc> continuation as "raise" (and consequently the same dynamic > Marc> environment and exception handler). > > Why is this inconsistent? SRFI 34 doesn't specify a behavior > different from that of SRFI 18. It merely leaves part of the behavior > unspecified. No, SRFI 34 says: (raise obj) Invokes the current exception handler on obj . The handler is called in the dynamic environment of the call to raise , **** except that the current exception handler is that in place for the call to with-exception-handler that installed the handler being called. The handler's continuation is otherwise unspecified. **** According to this, the continuation of the exception handler can't be the ***same*** as the continuation of raise because the dynamic environment is different (recall that the dynamic environment is part of the continuation). Marc