Don't overallocate for bytearray()

vstinner · vstinner · commit 7095ac45c474 · 2025-03-27T10:48:30.000+01:00
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
@@ -3775,7 +3775,7 @@ byteswriter_resize(PyBytesWriter *writer, Py_ssize_t size, int overallocate)
         return 0;
     }
 
-    if (overallocate) {
+    if (overallocate && !writer->use_bytearray) {
         if (size <= (PY_SSIZE_T_MAX - size / OVERALLOCATE_FACTOR)) {
             size += size / OVERALLOCATE_FACTOR;
         }

Original file line number	Diff line number	Diff line change
`@@ -3775,7 +3775,7 @@ byteswriter_resize(PyBytesWriter *writer, Py_ssize_t size, int overallocate)`
`3775`	`3775`	`return 0;`
`3776`	`3776`	`}`
`3777`	`3777`
`3778`		`- if (overallocate) {`
	`3778`	`+ if (overallocate && !writer->use_bytearray) {`
`3779`	`3779`	`if (size <= (PY_SSIZE_T_MAX - size / OVERALLOCATE_FACTOR)) {`
`3780`	`3780`	`size += size / OVERALLOCATE_FACTOR;`
`3781`	`3781`	`}`