From 9e362de34f0e71b1ba9603ba71d233d1f62cd00a Mon Sep 17 00:00:00 2001
From: Markus Armbruster <armbru@pond.sub.org>
Date: Mon, 13 Feb 2006 19:07:31 +0000
Subject: [PATCH] (xuheader, xundump): Return -2 for empty input, so it can be
 distinguished from bad input.

---
 src/lib/common/xundump.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/common/xundump.c b/src/lib/common/xundump.c
index c43bc463..4dcb5ead 100644
--- a/src/lib/common/xundump.c
+++ b/src/lib/common/xundump.c
@@ -540,7 +540,7 @@ xuheader(FILE *fp, int expected_table)
     while ((ch = skipfs(fp)) == '\n')
 	lineno++;
     if (ch == EOF && expected_table == EF_BAD)
-	return -1;
+	return -2;
     ungetc(ch, fp);
 
     human = ch == 'c';
@@ -639,7 +639,7 @@ xundump(FILE *fp, char *file, int expected_table)
     }
 
     if ((type = xuheader(fp, expected_table)) < 0)
-	return -1;
+	return type;
 
     ca = ef_cadef(type);
     if (CANT_HAPPEN(!ca))