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<TITLE>5.4 Known Bugs</TITLE>
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<A HREF="compile.html"><FONT COLOR="#FFFFFF">1 Compile</FONT></A><BR>
<A HREF="design.html"><FONT COLOR="#FFFFFF">2 Design</FONT></A><BR>
<A HREF="implement.html"><FONT COLOR="#FFFFFF">3 Implement</FONT></A><BR>
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<P><FONT SIZE="5">5.4 Known Bugs</FONT><BR>
<P><BR><FONT SIZE="4"><STRONG>FunnelWeb 3.2 (May 1999)</STRONG></FONT><BR>
<P>A bug exists, at least in the Macintosh version, where FunnelWeb V3.2
hangs when fed the following file:
<P>
<PRE>
@O@<X@>@{@<Y@>@}
@$@<Y@>@M@{@<Z@>@(@<Y@>@)@}
@$@<Z@>@(@1@)@{@1@}
</PRE>
<P>FunnelWeb has always (since V1 in 1986) had macro
recursion detection, but it appears to fail in this case.
You can workaround this bug by eliminating all recursive
macro invocations.
<P>
<HR>
<P>A bug exists in the output line length monitoring of
FunnelWeb V3.2. If you set the pragma <SAMP>indentation
= none</SAMP>, FunnelWeb still counts the output line lengths
as if they are being indented, even though they aren't.
You can workaround this by ignoring the output file line
length errors or by setting:
<P>
<PRE>
@p maximum_output_line_length = infinity
</PRE>
<P>The following source code patch has been proposed, but
not yet tested:
<P>
<PRE>
In tangle.c, the code:
/* Output an EOL with indentation if desired. */
if (tgindent)
eolblank(ind_base);
else
wf_chr(&f_o,EOL);
ind_curr=ind_base;
should be changed to:
/* Output an EOL with indentation if desired. */
if (tgindent)
{ eolblank(ind_base); ind_curr=ind_base; }
else
{ wf_chr(&f_o,EOL); ind_curr=0; }
</PRE>
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