From 103b0e20fba725c901b8f254d5fcd28c4be72979 Mon Sep 17 00:00:00 2001
From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Wed, 8 Oct 2025 16:04:54 +0300
Subject: [PATCH] lib: istream - Add assert to make sure skip/pos state is
 valid after istream.read()

---
 src/lib/istream.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lib/istream.c b/src/lib/istream.c
index b13f3f43ae..d3881a3ea0 100644
--- 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:
-- 
2.47.3