From: Benjamin Peterson <benjamin@python.org>
Date: Fri, 31 Mar 2017 11:05:25 +0000 (-0700)
Subject: suppress compiler warnings in _ctypes_test (#902)
X-Git-Tag: v3.7.0a1~1029
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=164d30eb1e66575dafee6af4fca4cbf52c7fbe6a;p=thirdparty%2FPython%2Fcpython.git

suppress compiler warnings in _ctypes_test (#902)

Changed test code to suppress a compiler warning, while taking care to avoid the code being optimized out by the compiler.
---

diff --git a/Modules/_ctypes/_ctypes_test.c b/Modules/_ctypes/_ctypes_test.c
index 9410c7fba84a..fe0015c80136 100644
--- a/Modules/_ctypes/_ctypes_test.c
+++ b/Modules/_ctypes/_ctypes_test.c
@@ -52,9 +52,9 @@ _testfunc_cbk_large_struct(Test in, void (*func)(Test))
 EXPORT(void)
 _testfunc_large_struct_update_value(Test in)
 {
-    in.first = 0x0badf00d;
-    in.second = 0x0badf00d;
-    in.third = 0x0badf00d;
+    ((volatile Test *)&in)->first = 0x0badf00d;
+    ((volatile Test *)&in)->second = 0x0badf00d;
+    ((volatile Test *)&in)->third = 0x0badf00d;
 }
 
 EXPORT(void)testfunc_array(int values[4])