===================================================================
RCS file: /cvs/mandoc/main.c,v
retrieving revision 1.301
retrieving revision 1.303
diff -u -p -r1.301 -r1.303
--- mandoc/main.c	2017/07/26 10:21:55	1.301
+++ mandoc/main.c	2018/02/23 16:47:10	1.303
@@ -1,4 +1,4 @@
-/*	$Id: main.c,v 1.301 2017/07/26 10:21:55 schwarze Exp $ */
+/*	$Id: main.c,v 1.303 2018/02/23 16:47:10 schwarze Exp $ */
 /*
  * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2010-2012, 2014-2017 Ingo Schwarze <schwarze@openbsd.org>
@@ -484,6 +484,17 @@ main(int argc, char *argv[])
 				passthrough(resp->file, fd,
 				    conf.output.synopsisonly);
 
+			if (ferror(stdout)) {
+				if (tag_files != NULL) {
+					warn("%s", tag_files->ofn);
+					tag_unlink();
+					tag_files = NULL;
+				} else
+					warn("stdout");
+				rc = MANDOCLEVEL_SYSERR;
+				break;
+			}
+
 			if (argc > 1 && curp.outtype <= OUTT_UTF8) {
 				if (curp.outdata == NULL)
 					outdata_alloc(&curp);
@@ -1173,7 +1184,7 @@ spawn_pager(struct tag_files *tag_files)
 	if (dup2(tag_files->ofd, STDOUT_FILENO) == -1)
 		err((int)MANDOCLEVEL_SYSERR, "pager stdout");
 	close(tag_files->ofd);
-	close(tag_files->tfd);
+	assert(tag_files->tfd == -1);
 
 	/* Do not start the pager before controlling the terminal. */