diff options
Diffstat (limited to '0029-MINGW-support-stdcall-without-underscore.patch')
-rw-r--r-- | 0029-MINGW-support-stdcall-without-underscore.patch | 54 |
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 + |