graalpy: floatobject structure is opaque on graalpy

Author: timfel

pyo3-ffi/src/cpython/floatobject.rs

@@ -1,9 +1,12 @@
 use crate::{PyFloat_Check, PyObject};
+#[cfg(GraalPy)]
+use crate::PyFloat_AsDouble;
 use std::os::raw::c_double;
 
 #[repr(C)]
 pub struct PyFloatObject {
     pub ob_base: PyObject,
+    #[cfg(not(GraalPy))]
     pub ob_fval: c_double,
 }
 
@@ -15,7 +18,10 @@ pub unsafe fn _PyFloat_CAST(op: *mut PyObject) -> *mut PyFloatObject {
 
 #[inline]
 pub unsafe fn PyFloat_AS_DOUBLE(op: *mut PyObject) -> c_double {
-    (*_PyFloat_CAST(op)).ob_fval
+    #[cfg(not(GraalPy))]
+    return (*_PyFloat_CAST(op)).ob_fval;
+    #[cfg(GraalPy)]
+    return PyFloat_AsDouble(op);
 }
 
 // skipped PyFloat_Pack2