Probable fix for #19944

diff --git a/main/streams.c b/main/streams.c
index e71a42585c4ef47e790fef5c89ac8286303f66f3..9e61916bd9a3cf972bb3826402c0899c191e112c 100755 (executable)
--- a/main/streams.c
+++ b/main/streams.c
@@ -495,7 +495,7 @@ static void php_stream_fill_read_buffer(php_stream *stream, size_t size TSRMLS_D
                                        TSRMLS_CC);
                }
 
-               if (justread > 0) {
+               if (justread != (size_t)-1) {
                        stream->writepos += justread;
                }
        }