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IDProjectCategoryView StatusDate SubmittedLast Update
0001089graphvizDotpublic2006-03-17 10:312011-04-28 04:03
ReporterCarolyn Schurek 
Assigned Toellson 
PlatformOS*-Linux-OS Version
Summary0001089: Subgraph label causes Dotty to give-up

When running dotty with the attached input the file as follows:

>>>> dotty

The following error results:

dotty.lefty: giving up on dot
dotty.lefty: graph that causes dot
dotty.lefty: to fail has been save in file
dotty.lefty: please fill out a bug report at
dotty.lefty: [^]

The version of dotty being used is 96c.
Additional Information

This file has been proven to work on another computer server also using dotty 96c.

I have narrowed the problem down to the subgraph label.
If the subgraph label line is omitted from the input file, it works.
However, I would like to use the subgraph label feature.

Please let me know how to fix this problem - perhaps the version
of dot is not compatible with the file!?!?

>>dotty version 96c (09-24-96)
>>lefty version 10 Mar 2005
>>graphviz version 2.8 (Tue Mar 14 16:18:46 UTC 2006)

I have since discovered that the file does seem to work properly
when dot v2.0 is being used, however, it doesn't seem to work with v2.8.

[carolyn] Ah! Okay, well, running dot there appears to be no problems. Therefore, my
guess is that there is a problem between the dotty-dot interaction. However,
as stated previously dotty v96c with dot v2.8 doesn't work, however, dotty v96
with dot 2.0 does.

[erg] Apparently, the trick is to remember that dotty uses dot -Txdot.
In addition, the bug only pops up if a recent gcc is used, and the bool
type is supplied by stdbool.h. In that case, a bool value will only be
either 1 or 0. This means the old use of "bool have_labels" in Agraphinfo_t,
which relied on bool as unsigned char supporting bit vector semantics, fails.
Thanks to Horst Schirmeier for catching this.
TagsNo tags attached.
STATUS-COMMENTFixed (16 may 2006)
VERSION     2.8
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- Issue History
Date Modified Username Field Change
2011-04-28 04:03 user1 New Issue
2011-04-28 04:03 user1 Assigned To => user695

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