correct fix for bug #43522

diff --git a/main/streams/streams.c b/main/streams/streams.c
index d627b555141c7524aad867a8737a3dffd9aff5ca..c87e89d567ee3b1b1c0dfa84d426c8f865e914f6 100755 (executable)
--- a/main/streams/streams.c
+++ b/main/streams/streams.c
@@ -859,10 +859,17 @@ PHPAPI char *php_stream_get_record(php_stream *stream, size_t maxlen, size_t *re
        if (delim_len == 0 || !delim) {
                toread = maxlen;
        } else {
+               size_t seek_len;
+
+               seek_len = stream->writepos - stream->readpos;
+               if (seek_len > maxlen) {
+                       seek_len = maxlen;
+               }
+
                if (delim_len == 1) {
-                       e = memchr(stream->readbuf + stream->readpos, *delim, maxlen);
+                       e = memchr(stream->readbuf + stream->readpos, *delim, seek_len);
                } else {
-                       e = php_memnstr(stream->readbuf + stream->readpos, delim, delim_len, (stream->readbuf + stream->readpos + maxlen));
+                       e = php_memnstr(stream->readbuf + stream->readpos, delim, delim_len, (stream->readbuf + stream->readpos + seek_len));
                }
 
                if (!e) {