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|ID||Project||Category||View Status||Date Submitted||Last Update|
|0000580||Core Inform||Understanding||public||2011-02-22 11:52||2014-05-07 07:33|
|Platform||x86||OS||Mac OS X||OS Version||10.5|
|Target Version||Fixed in Version||6L02|
|Summary||0000580: P37 low level error with invalid use of text token|
|Description||When using a text token in a way that I probably shouldn't, I get a library error followed by a P37 run-time error. I suspect that it's throwing an error after trying to report the library error, but the error message says to report it as a possible bug. The code should probably refuse to compile, as the underlying error seems to be that the [text] token can't precede the [something] token in an Understand statement.|
|Minimal Source Text To Reproduce|
Lab is a room. Frizzling is an action applying to one thing. Understand "frizzle [something]" as frizzling. Frozzling is an action applying to one topic and one thing. Understand "[text] [something]" as frozzling. The grunion is in the lab. Carry out frizzling: say "You frizzle [the noun]." Carry out frozzling: if the topic understood matches "boo": try frizzling the noun; otherwise: say "I didn't follow that."
|Additional Information||The response to "boo grunion" is:|
** Library error 13 (0,0) **
** A 'topic' token can only be followed by a preposition **
*** Run-time problem P37: Low level error.
I didn't follow that.
|Tags||No tags attached.|
|Effect||(mild) Compiler accepts invalid code|
edited on: 2011-02-22 19:09
This can also occur even in less abusive cases. For instance in the following:
Lab is a room.
The frozzle-text is an indexed text that varies.
The grunion-list is a list of indexed texts that varies.
Booing is an action applying to one topic. Understand "boo [text]" as booing.
Carry out booing:
Now the frozzle-text is the topic understood;
Add the frozzle-text to the grunion-list;
say "'[The topic understood]' is now a synonym for the grunion."
The grunion is in the lab. Understand "[text]" as the grunion when the topic understood is listed in the grunion-list.
test me with "boo bam/x bam/show bam to me".
"x bam" works, but "show bam to me" produces a P37 error (and then behaves as desired). Here I don't have a single "understand" statement of the form "[text] [something]", but I do wind up forcing the parser to evaluate a text-token in the middle of a command.
Apologies for the silly vocabulary; I tried writing a less silly example but couldn't get it to work.
|I've added a problem message to catch the original case at compile-time, and a run-time problem to catch the variation case at run-time.|
|2011-02-22 11:52||mattweiner||New Issue|
|2011-02-22 16:08||jmcgrew||Status||new => acknowledged|
|2011-02-22 19:08||mattweiner||Note Added: 0001044|
|2011-02-22 19:08||mattweiner||Note Edited: 0001044||View Revisions|
|2011-02-22 19:09||mattweiner||Note Edited: 0001044||View Revisions|
|2011-02-24 15:55||EmacsUser||Status||acknowledged => confirmed|
|2014-02-15 10:51||graham||Note Added: 0002510|
|2014-02-15 10:51||graham||Status||confirmed => resolved|
|2014-02-15 10:51||graham||Resolution||open => fixed|
|2014-02-15 10:51||graham||Assigned To||=> graham|
|2014-05-07 07:32||jmcgrew||Fixed in Version||=> 6L02|
|2014-05-07 07:33||jmcgrew||Status||resolved => closed|
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