# HG changeset patch
# User Timo Sirainen <timo.sirainen@dovecot.fi>
# Date 1490137537 -7200
# Node ID ad5fd5b950dbb33cd5b50e19772001e7b1e6f4fd
# Parent  1481b5e5e717437f54553544a991d74785343f1b
lib: Add missing error handling to o_stream_cork()

With ostream-file the corking could have called buffer_flush(), which could
have failed and set stream_errno, but nothing would set last_failed_errno.

Fixes:
Panic: file ostream.c: line 59 (o_stream_close_full): assertion failed: (stream->last_failed_errno != 0)

diff -r 1481b5e5e717 -r ad5fd5b950db src/lib/ostream.c
--- a/src/lib/ostream.c	Mon Mar 20 20:21:56 2017 +0200
+++ b/src/lib/ostream.c	Wed Mar 22 01:05:37 2017 +0200
@@ -144,6 +144,8 @@
 		return;
 
 	_stream->cork(_stream, TRUE);
+	if (stream->stream_errno != 0)
+		errno = stream->last_failed_errno = stream->stream_errno;
 }
 
 void o_stream_uncork(struct ostream *stream)