bpo-41366: Fix clang warning for sign conversion (GH-21592)

miss-islington · henryiii · web-flow · commit e8dda907fbeb · 2020-07-23T01:59:21.000-07:00
(cherry picked from commit 680254a) Co-authored-by: Henry Schreiner <HenrySchreinerIII@gmail.com>
diff --git a/Include/cpython/unicodeobject.h b/Include/cpython/unicodeobject.h
@@ -52,7 +52,7 @@ extern "C" {
 
 Py_DEPRECATED(3.3) static inline void
 Py_UNICODE_COPY(Py_UNICODE *target, const Py_UNICODE *source, Py_ssize_t length) {
-    memcpy(target, source, length * sizeof(Py_UNICODE));
+    memcpy(target, source, (size_t)(length) * sizeof(Py_UNICODE));
 }
 
 Py_DEPRECATED(3.3) static inline void

Original file line number	Diff line number	Diff line change
`@@ -52,7 +52,7 @@ extern "C" {`
`52`	`52`
`53`	`53`	`Py_DEPRECATED(3.3) static inline void`
`54`	`54`	`Py_UNICODE_COPY(Py_UNICODE target, const Py_UNICODE source, Py_ssize_t length) {`
`55`		`- memcpy(target, source, length * sizeof(Py_UNICODE));`
	`55`	`+ memcpy(target, source, (size_t)(length) * sizeof(Py_UNICODE));`
`56`	`56`	`}`
`57`	`57`
`58`	`58`	`Py_DEPRECATED(3.3) static inline void`