Issue #8914: fix various warnings from the Clang static analyzer v254.
diff --git a/Include/pyerrors.h b/Include/pyerrors.h
index 4bb3c01..edc8218 100644
--- a/Include/pyerrors.h
+++ b/Include/pyerrors.h
@@ -70,7 +70,17 @@
PyAPI_FUNC(void) PyErr_Clear(void);
PyAPI_FUNC(void) PyErr_Fetch(PyObject **, PyObject **, PyObject **);
PyAPI_FUNC(void) PyErr_Restore(PyObject *, PyObject *, PyObject *);
-PyAPI_FUNC(void) Py_FatalError(const char *message);
+
+#if defined(__clang__) || \
+ (defined(__GNUC__) && \
+ ((__GNUC_MAJOR__ >= 3) || \
+ (__GNUC_MAJOR__ == 2) && (__GNUC_MINOR__ >= 5)))
+#define _Py_NO_RETURN __attribute__((__noreturn__))
+#else
+#define _Py_NO_RETURN
+#endif
+
+PyAPI_FUNC(void) Py_FatalError(const char *message) _Py_NO_RETURN;
#if defined(Py_DEBUG) || defined(Py_LIMITED_API)
#define _PyErr_OCCURRED() PyErr_Occurred()