CompressingReader: make sure to clear out buffer

Out buffer may have some stale overflow data on Reset. Signed-off-by: Alex Dubov <oakad@yahoo.com>
pierrec · Nov 13, 2023 · f2ece5b · f2ece5b
1 parent 65348f5
commit f2ece5b
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/compressing_reader.go b/compressing_reader.go
@@ -170,6 +170,7 @@ func (zrd *CompressingReader) Reset(src io.ReadCloser) {
 	zrd.frame.Reset(1)
 	zrd.state = crStateInitial
 	zrd.src = src
+	zrd.out.clear()
 }
 
 type ovWriter struct {
@@ -208,3 +209,10 @@ func (wr *ovWriter) reset(out []byte) bool {
 	wr.data = out
 	return true
 }
+
+func (wr *ovWriter) clear() {
+	wr.data = nil
+	wr.dataPos = 0
+	wr.ov = wr.ov[ : 0]
+	wr.ovPos = 0
+}