File riscv64-ctypes.patch of Package python3.17727

From 742d768656512a469ce9571b1cbd777def7bc5ea Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@linux-m68k.org>
Date: Tue, 29 Jan 2019 17:16:10 +0100
Subject: [PATCH] bpo-35847: RISC-V needs CTYPES_PASS_BY_REF_HACK (GH-11694)

This fixes the ctypes.test.test_structures.StructureTestCase test.


https://bugs.python.org/issue35847
---
 .../next/Library/2019-01-29-09-11-09.bpo-35847.eiSi4t.rst       | 1 +
 Modules/_ctypes/callproc.c                                      | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Library/2019-01-29-09-11-09.bpo-35847.eiSi4t.rst

--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2019-01-29-09-11-09.bpo-35847.eiSi4t.rst
@@ -0,0 +1 @@
+RISC-V needed the CTYPES_PASS_BY_REF_HACK.  Fixes ctypes Structure test_pass_by_value.
--- a/Modules/_ctypes/callproc.c
+++ b/Modules/_ctypes/callproc.c
@@ -1063,7 +1063,7 @@ GetComError(HRESULT errcode, GUID *riid,
 #endif
 
 #if (defined(__x86_64__) && (defined(__MINGW64__) || defined(__CYGWIN__))) || \
-    defined(__aarch64__)
+    defined(__aarch64__) || defined(__riscv)
 #define CTYPES_PASS_BY_REF_HACK
 #define POW2(x) (((x & ~(x - 1)) == x) ? x : 0)
 #define IS_PASS_BY_REF(x) (x > 8 || !POW2(x))