lib: istream - Add assert to make sure skip/pos state is valid after istream.read()

diff --git a/src/lib/istream.c b/src/lib/istream.c
index b13f3f43ae10d309202c4ba89deb822e3a520323..d3881a3ea0ff2bebfc3111d5e7652b456079f27b 100644 (file)
--- a/src/lib/istream.c
+++ b/src/lib/istream.c
@@ -369,6 +369,7 @@ ssize_t i_stream_read_memarea(struct istream *stream)
                _stream->io_pending_until_read = FALSE;
                ret = _stream->read(_stream);
        }
+       i_assert(_stream->skip <= _stream->pos);
        i_assert(old_size <= _stream->pos - _stream->skip);
        switch (ret) {
        case -2: