Avoiding extra allocation in Reset (#1086)

travelpolicy · web-flow · commit 1a8c0e48e1fa · 2025-07-21T11:51:06.000+02:00
diff --git a/zlib/reader.go b/zlib/reader.go
@@ -132,7 +132,7 @@ func (z *reader) Close() error {
 }
 
 func (z *reader) Reset(r io.Reader, dict []byte) error {
-	*z = reader{decompressor: z.decompressor}
+	*z = reader{decompressor: z.decompressor, digest: z.digest}
 	if fr, ok := r.(flate.Reader); ok {
 		z.r = fr
 	} else {

Original file line number	Diff line number	Diff line change
`@@ -132,7 +132,7 @@ func (z *reader) Close() error {`
`132`	`132`	`}`
`133`	`133`
`134`	`134`	`func (z *reader) Reset(r io.Reader, dict []byte) error {`
`135`		`- *z = reader{decompressor: z.decompressor}`
	`135`	`+ *z = reader{decompressor: z.decompressor, digest: z.digest}`
`136`	`136`	`if fr, ok := r.(flate.Reader); ok {`
`137`	`137`	`z.r = fr`
`138`	`138`	`} else {`