BUG: Fix build of third-party extensions with Py_LIMITED_API

lpsinger · lpsinger · commit 53e4f63ac2d2 · 2022-01-13T13:26:14.000-05:00
The type `vectorcallfunc` is not defined by Python's limited API. Guard its use with a `#ifdef` so that third-party extensions that use the Numpy C API will build with Py_LIMITED_API defined. This fixes a regression introduced in #20315.
diff --git a/numpy/core/include/numpy/ufuncobject.h b/numpy/core/include/numpy/ufuncobject.h
@@ -173,7 +173,11 @@ typedef struct _tagPyUFuncObject {
          * but this was never implemented. (This is also why the above
          * selector is called the "legacy" selector.)
          */
-        vectorcallfunc vectorcall;
+        #ifndef Py_LIMITED_API
+            vectorcallfunc vectorcall;
+        #else
+            void *reserved2;
+        #endif
 
         /* Was previously the `PyUFunc_MaskedInnerLoopSelectionFunc` */
         void *_always_null_previously_masked_innerloop_selector;
