Update to 3.9.6

1 files changed, 54 insertions, 0 deletions

diff --git a/0029-MINGW-support-stdcall-without-underscore.patch b/0029-MINGW-support-stdcall-without-underscore.patch
new file mode 100644
index 000000000000..8275227ab444
--- /dev/null
+++ b/0029-MINGW-support-stdcall-without-underscore.patch
@@ -0,0 +1,54 @@
+From 8353a7f30f7dc0a33111f43ad2ce7acfa6de0a32 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?=D0=90=D0=BB=D0=B5=D0=BA=D1=81=D0=B5=D0=B9?=
+ <alexey.pawlow@gmail.com>
+Date: Thu, 17 Jun 2021 18:51:39 +0530
+Subject: [PATCH 029/N] MINGW support stdcall without underscore
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Co-authored-by: Алексей <alexey.pawlow@gmail.com>
+---
+ Modules/_ctypes/_ctypes.c | 19 +++++++++++++++++++
+ 1 file changed, 19 insertions(+)
+
+diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
+index ceae67e..b9cf96b 100644
+--- a/Modules/_ctypes/_ctypes.c
++++ b/Modules/_ctypes/_ctypes.c
+@@ -3406,6 +3406,18 @@ static PPROC FindAddress(void *handle, const char *name, PyObject *type)
+     mangled_name = alloca(strlen(name) + 1 + 1 + 1 + 3); /* \0 _ @ %d */
+     if (!mangled_name)
+         return NULL;
++    /* Issue: for stdcall decorated export functions MSVC compiler adds
++     * underscore, but GCC compiler create them without. This is
++     * visible by example for _ctypes_test.pyd module.
++     * As well functions from system libraries are without underscore.
++     * Solutions:
++     * - If a python module is build with gcc option --add-stdcall-alias
++     * the module will contain XXX as alias for function XXX@ as result
++     * first search in this method will succeed.
++     * - Distutil may use compiler to create def-file, to modify it as
++     * add underscore alias and with new def file to create module.
++     * - Or may be just to search for function without underscore.
++     */
+     for (i = 0; i < 32; ++i) {
+         sprintf(mangled_name, "_%s@%d", name, i*4);
+         Py_BEGIN_ALLOW_THREADS
+@@ -3413,6 +3425,13 @@ static PPROC FindAddress(void *handle, const char *name, PyObject *type)
+         Py_END_ALLOW_THREADS
+         if (address)
+             return address;
++        /* search for function without underscore as weel */
++        sprintf(mangled_name, "%s@%d", name, i*4);
++        Py_BEGIN_ALLOW_THREADS
++        address = (PPROC)GetProcAddress(handle, mangled_name);
++        Py_END_ALLOW_THREADS
++        if (address)
++            return address;
+     }
+     return NULL;
+ #endif
+-- 
+2.32.0
+