Replace SEXPREC with something truly opaque

extendr · Nov 18, 2023 · ced9225 · ced9225
1 parent 6fc2b5f
commit ced9225
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Showing 2 changed files with 7 additions and 0 deletions.
diff --git a/build.rs b/build.rs
@@ -520,6 +520,9 @@ fn generate_bindings(r_paths: &InstallationPaths, version_info: &RVersionInfo) {
     // Remove all Fortran items, these are items with underscore _ postfix
     let bindgen_builder = bindgen_builder.blocklist_item("[A-Za-z_][A-Za-z0-9_]*[^_]_$");
 
+    // Ensure that `SEXPREC` is opaque to Rust
+    let bindgen_builder = bindgen_builder.blocklist_item("SEXPREC");
+
     // Finish the builder and generate the bindings.
     let bindings = bindgen_builder
         .raw_line(format!(

diff --git a/src/lib.rs b/src/lib.rs
@@ -66,6 +66,10 @@
 
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
 
+#[repr(transparent)]
+#[derive(Debug)]
+pub struct SEXPREC(std::ffi::c_void);
+
 #[cfg(test)]
 mod tests {
     use super::*;