From: Jim Warner <james.warner@comcast.net>
Date: Mon, 3 Aug 2015 05:00:00 +0000 (-0500)
Subject: top: fix unlikely edge case wherein all fields are off
X-Git-Tag: v4.0.0~1077
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=180bbb4032d8ab0e22f05ed26bf183942009dfe5;p=procps-ng

top: fix unlikely edge case wherein all fields are off

While testing a newlib interface for pids acquisitions
I encountered some unexpected results if an idiot user
(me) turns off all displayable fields. So, this commit
ensures that the PID field will be shown as a minimum.

Signed-off-by: Jim Warner <james.warner@comcast.net>
---

diff --git a/top/top.c b/top/top.c
index 0d51a88f..00658018 100644
--- a/top/top.c
+++ b/top/top.c
@@ -2021,6 +2021,7 @@ static void calibrate_fields (void) {
 #endif
             }
          }
+         if (!w->totpflgs) w->pflgsall[w->totpflgs++] = EU_PID;
 
          /* build a preliminary columns header not to exceed screen width
             while accounting for a possible leading window number */