From: Timo Sirainen <tss@iki.fi>
Date: Fri, 12 Feb 2010 21:29:31 +0000 (+0200)
Subject: i_stream_grow_buffer(): Never shrink the buffer.
X-Git-Tag: 2.0.beta3~107
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=7d5d50dd9a8c2539d7025a69e39d34fca56daeaf;p=thirdparty%2Fdovecot%2Fcore.git

i_stream_grow_buffer(): Never shrink the buffer.

--HG--
branch : HEAD
---

diff --git a/src/lib/istream.c b/src/lib/istream.c
index f5972f4e9f..1d93c23583 100644
--- a/src/lib/istream.c
+++ b/src/lib/istream.c
@@ -432,8 +432,13 @@ void i_stream_grow_buffer(struct istream_private *stream, size_t bytes)
 	    stream->buffer_size > stream->max_buffer_size)
 		stream->buffer_size = stream->max_buffer_size;
 
-	stream->buffer = stream->w_buffer =
-		i_realloc(stream->w_buffer, old_size, stream->buffer_size);
+	if (stream->buffer_size <= old_size)
+		stream->buffer_size = old_size;
+	else {
+		stream->w_buffer = i_realloc(stream->w_buffer, old_size,
+					     stream->buffer_size);
+		stream->buffer = stream->w_buffer;
+	}
 }
 
 bool i_stream_get_buffer_space(struct istream_private *stream,