[C++] Remove warning in the offset computation

jcarpent · jcarpent · commit b065acc8f7d5 · 2016-10-16T13:59:01.000+02:00
diff --git a/src/memory.hpp b/src/memory.hpp
@@ -77,8 +77,8 @@ namespace boost { namespace python { namespace objects { \
             Holder* holder = Derived::construct(&instance->storage, (PyObject*)instance, x); \
             holder->install(raw_result); \
              \
-            size_t holder_offset = reinterpret_cast<size_t>(holder) \
-            - reinterpret_cast<size_t>(&instance->storage) \
+            Py_ssize_t holder_offset = reinterpret_cast<Py_ssize_t>(holder) \
+            - reinterpret_cast<Py_ssize_t>(&instance->storage) \
             + offsetof(instance_t, storage); \
             Py_SIZE(instance) = holder_offset; \
              \

Original file line number	Diff line number	Diff line change
`@@ -77,8 +77,8 @@ namespace boost { namespace python { namespace objects { \`
`77`	`77`	`Holder* holder = Derived::construct(&instance->storage, (PyObject*)instance, x); \`
`78`	`78`	`holder->install(raw_result); \`
`79`	`79`	`\`
`80`		`- size_t holder_offset = reinterpret_cast<size_t>(holder) \`
`81`		`- - reinterpret_cast<size_t>(&instance->storage) \`
	`80`	`+ Py_ssize_t holder_offset = reinterpret_cast<Py_ssize_t>(holder) \`
	`81`	`+ - reinterpret_cast<Py_ssize_t>(&instance->storage) \`
`82`	`82`	`+ offsetof(instance_t, storage); \`
`83`	`83`	`Py_SIZE(instance) = holder_offset; \`
`84`	`84`	`\`