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From 84e85611c36d31a478e1b62e5668671d9389265d Mon Sep 17 00:00:00 2001
From: Jim Warner <james.warner@comcast.net>
Date: Mon, 31 May 2021 00:00:00 -0500
Subject: [PATCH] top: fix two potential 'alternate display mode' abends
This commit will address potential abends upon leaving
the windows help or color mapping screens and invoking
alternate display mode ('A'). It only happens if that
current window was changed with multiple 'a'/'w' keys.
So now, rather than leaving a trail of negative values
in the 'begtask' field, compliments of that win_select
function, we'll remove the mkVIZrow1 macro. Henceforth
it will be issued just once per user interaction. Thus
a promise of 'Curwin' only being impacted is restored.
[ my thanks to Vladimir Chren for reporting this bug ]
Reference(s):
https://gitlab.com/procps-ng/procps/-/issues/210
https://gitlab.com/procps-ng/procps/-/merge_requests/135
Discovered by:Vladimir Chren <vladimir.chren@gmail.com>
Signed-off-by: Jim Warner <james.warner@comcast.net>
---
top/top.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/top/top.c b/top/top.c
index c1f30fb..dd6e3d5 100644
--- a/top/top.c
+++ b/top/top.c
@@ -4475,7 +4475,6 @@ static WIN_t *win_select (int ch) {
break;
}
Curwin = w;
- mkVIZrow1(Curwin);
return Curwin;
} // end: win_select
@@ -5148,6 +5147,7 @@ static void keys_global (int ch) {
case '?':
case 'h':
help_view();
+ mkVIZrow1(Curwin);
break;
case 'B':
TOGw(w, View_NOBOLD);
@@ -5175,6 +5175,7 @@ static void keys_global (int ch) {
break;
case 'g':
win_select(0);
+ mkVIZrow1(Curwin);
break;
case 'H':
Thread_mode = !Thread_mode;
@@ -5254,6 +5255,7 @@ static void keys_global (int ch) {
break;
case 'Z':
wins_colors();
+ mkVIZrow1(Curwin);
break;
case '0':
Rc.zero_suppress = !Rc.zero_suppress;
@@ -5573,7 +5575,10 @@ static void keys_window (int ch) {
break;
case 'a':
case 'w':
- if (ALTCHKw) win_select(ch);
+ if (ALTCHKw) {
+ win_select(ch);
+ mkVIZrow1(Curwin);
+ }
break;
case 'G':
if (ALTCHKw) {
--
1.8.3.1
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