> > (2) > > I'll use this C code as an example to build an extention in Rust. The > Postgresql bindings for Rust I have don't contain a definition of > `FirstLowInvalidHeapAttributeNumber` for some reason. I can define it > since it's simply single digit constant. >
Not an answer to your question - but use better bindings! https://github.com/zombodb/pgx <https://github.com/zombodb/pgx> [nix-shell:~/rust/pgx_master]$ grep -R FirstLowInvalidHeapAttributeNumber pgx-pg-sys/ pgx-pg-sys/generated-bindings/pg12_specific.rs:pub const FirstLowInvalidHeapAttributeNumber: i32 = -7; Which is obviously not quite right still, so I pushed a version with some extra includes. Now you will get: [nix-shell:~/rust/pgx_master]$ grep -R FirstLowInvalidHeapAttributeNumber ./pgx-pg-sys/ ./pgx-pg-sys/generated-bindings/pg10_specific.rs:pub const FirstLowInvalidHeapAttributeNumber: i32 = -8; ./pgx-pg-sys/generated-bindings/pg12_specific.rs:pub const FirstLowInvalidHeapAttributeNumber: i32 = -7; ./pgx-pg-sys/generated-bindings/pg11_specific.rs:pub const FirstLowInvalidHeapAttributeNumber: i32 = -8; You'll need to use the Github version not the crates.io until the next release if you want all the versions.
