paleolimbot commented on a change in pull request #11919:
URL: https://github.com/apache/arrow/pull/11919#discussion_r766656781
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File path: r/src/py-to-r.cpp
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@@ -21,6 +21,38 @@
#include <arrow/c/bridge.h>
+// [[arrow::export]]
+double external_pointer_addr_double(SEXP external_pointer) {
+ // potentially lossy conversion to double needed for the current
+ // implementation of import/export to Python
+ return reinterpret_cast<uintptr_t>(R_ExternalPtrAddr(external_pointer));
Review comment:
I think this one needs to stay like this because it's the exact code
that was previously used to convert a `Pointer<>` to `SEXP` (and is what the
Python library relies on to recreate the pointer).
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