Bugs item #1959811, was opened at 2008-05-07 23:22
Message generated for change (Comment added) made by helly
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Category: None
Group: None
Status: Closed
Resolution: Invalid
Priority: 5
Private: No
Submitted By: Dennis Schridde (lindevel)
Assigned to: Marcus Börger (helly)
Summary: Segfault for debug scanners
Initial Comment:
In debug mode re2c generates code like this:
YYDEBUG(0, *YYCURSOR);
if ((YYLIMIT - YYCURSOR) < 11) YYFILL(11);
However before the scanner was filled, "cursor" will be NULL. (At least for the
examples.)
I assume YYCURSOR should be filled before trying to access it. I.e. YYDEBUG
after YYFILL.
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>Comment By: Marcus Börger (helly)
Date: 2008-05-25 17:59
Message:
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Which example are you referring to?
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Comment By: Dennis Schridde (lindevel)
Date: 2008-05-25 17:31
Message:
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Then this is a problem in your examples, which do not seem to handle this
case.
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Comment By: Marcus Börger (helly)
Date: 2008-05-25 15:50
Message:
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The user code has to initialize YYCURSOR. In your example fill() would not
get called as YYLIMIT - NULL probably is greater 11.
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