Compilation warnings (unused local typedefs)

[Alpar Juttner]

Clang compiler version 5.0 reports a tons of warnings of unused local typedefs (recent gcc doesn'n - the reason is unclear to me). This renders the compilation unsuccessful in Maintainer mode.

We need a decision how to handle it.

• The majority of these warnings comes from the *GRAPH_TYPEDEFS macros.
  • One way to avoid would be to suppress them to apply some compiler specific #pragma statement, but I have no idea how to do it safely and compiler independently. Can anyone help me in doing this? Is it possible to do it locally only for these typedefs?
  • The other solution is to use the ignode_unused() templates.