Migrated from SourceForge
Author: coenig
Timestamp: 2015-12-23 15:07:01.593000
The xor gate IEC in the file pgflibraryshapes.gates.logic.IEC.code.tex (starting at line 477) does not support 3 or more legs although all the other gates do.
I'm not sure if this is a bug or a conscious decision, but simply setting the according constant from 2 to 1024 (as is the case for the other gates) seems to resolve the problem.