Fix mmap

vstinner · vstinner · commit ed00f952146b · 2025-03-31T18:48:59.000+02:00
diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
@@ -457,6 +457,7 @@ _safe_PyBytes_FromStringAndSize(char *start, size_t num_bytes) {
         }
         if (safe_memcpy(PyBytesWriter_GetData(writer), start, num_bytes) < 0) {
             PyBytesWriter_Discard(writer);
+            return NULL;
         }
         return PyBytesWriter_Finish(writer);
     }

Original file line number	Diff line number	Diff line change
`@@ -457,6 +457,7 @@ _safe_PyBytes_FromStringAndSize(char *start, size_t num_bytes) {`
`457`	`457`	`}`
`458`	`458`	`if (safe_memcpy(PyBytesWriter_GetData(writer), start, num_bytes) < 0) {`
`459`	`459`	`PyBytesWriter_Discard(writer);`
	`460`	`+ return NULL;`
`460`	`461`	`}`
`461`	`462`	`return PyBytesWriter_Finish(writer);`
`462`	`463`	`}`