Sfdp crash, regression in 15.1.1

Uncategorized
1

Given the graph test.gv with content:

digraph {
  n0 -> n1;  n0 -> n2;  n0 -> n3;  n0 -> n4;
  n0 -> n5;  n0 -> n6;  n0 -> n7;  n0 -> n8;
  n0 -> n9;  n0 -> n10; n0 -> n11; n0 -> n12;
  n13 -> n14; n13 -> n7;
  n15 -> n16; n15 -> n17; n15 -> n18;
  n19 -> n20; n19 -> n21; n19 -> n18;
  n19 -> n2;  n19 -> n22; n19 -> n23;
}

then

❯ sfdp -Tsvg test.gv
free(): invalid size
[1]    1131228 abort (core dumped)  sfdp -Tsvg test.gv

Works fine in 15.1.0.

Sorry for reporting this here but creating a gitlab account is too much friction after they started requiring CC details for account creation.

2

Thanks for the report.
An issues has been created (new (15.1.5) bug in sfdp [abort (core dumped)] (#2852) · Issues · graphviz / graphviz · GitLab)

3

Thanks for reporting and apologies for the inconvenience. I believe I have a fix. Just running it through CI now, https://gitlab.com/smattr/graphviz/-/commits/smattr/gitlab-2852.

Personally I’m happy to accept Graphviz bug reports through any channel (Gitlab, here, emailed to me, shouted at me on the street, …).

4

For reference, the fix for this landed in Graphviz 16.1.0.