From: Karel Zak <kzak@redhat.com>
Date: Fri, 5 May 2017 11:56:40 +0000 (+0200)
Subject: column: be robust on empty table
X-Git-Tag: v2.30-rc1~29
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da06d421971d288078352bcff05e0bcc662b3a79;p=thirdparty%2Futil-linux.git

column: be robust on empty table

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/text-utils/column.c b/text-utils/column.c
index cdfb233907..421823d4a1 100644
--- a/text-utils/column.c
+++ b/text-utils/column.c
@@ -749,8 +749,10 @@ int main(int argc, char **argv)
 
 	switch (ctl.mode) {
 	case COLUMN_MODE_TABLE:
-		modify_table(&ctl);
-		eval = scols_print_table(ctl.tab);
+		if (ctl.tab && scols_table_get_nlines(ctl.tab)) {
+			modify_table(&ctl);
+			eval = scols_print_table(ctl.tab);
+		}
 		break;
 	case COLUMN_MODE_FILLCOLS:
 		columnate_fillcols(&ctl);