Just an update so people are aware, since It seems this will affect a growing number of people as gcc7 is adopted.. After doing more research it appears there are a growing number of applications that are getting similar overflow errors with GCC7 because of how the compiler handles things, one developer called it "too smart for it's own good" when dealing with size issues in memory/buffer.
Forcing my system to compile Guacamole server with gcc6 was successful. -- Sent from: http://apache-guacamole-incubating-users.2363388.n4.nabble.com/
