From 6fdb56cd4e0e15e202d402a576895289b5c14d43 Mon Sep 17 00:00:00 2001
From: Tim Stack <timothyshanestack@gmail.com>
Date: Mon, 28 Aug 2023 09:54:10 -0700
Subject: [PATCH] [lss] handle invalid row number

---
 .github/workflows/bins.yml | 1 +
 src/logfile_sub_source.hh  | 2 +-
 src/textview_curses.cc     | 4 +++-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/bins.yml b/.github/workflows/bins.yml
index 8c386569..470b93b0 100644
--- a/.github/workflows/bins.yml
+++ b/.github/workflows/bins.yml
@@ -67,6 +67,7 @@ jobs:
 
   build-arm:
     runs-on: ubuntu-latest
+    if: ${{ inputs.lnav_version_number != '' }}
     strategy:
       matrix:
         include:
diff --git a/src/logfile_sub_source.hh b/src/logfile_sub_source.hh
index 90cba0c7..5b2341c8 100644
--- a/src/logfile_sub_source.hh
+++ b/src/logfile_sub_source.hh
@@ -479,7 +479,7 @@ public:
 
     nonstd::optional<struct timeval> time_for_row(vis_line_t row)
     {
-        if (row < (ssize_t) this->text_line_count()) {
+        if (row >= 0_vl && row < (ssize_t) this->text_line_count()) {
             return this->find_line(this->at(row))->get_timeval();
         }
         return nonstd::nullopt;
diff --git a/src/textview_curses.cc b/src/textview_curses.cc
index 2107f03e..8bf9b95a 100644
--- a/src/textview_curses.cc
+++ b/src/textview_curses.cc
@@ -832,7 +832,9 @@ text_time_translator::data_reloaded(textview_curses* tc)
     if (tc->get_inner_height() == 0) {
         return;
     }
-    if (tc->get_selection() > tc->get_inner_height()) {
+    if (tc->get_selection() < 0_vl
+        || tc->get_selection() > tc->get_inner_height())
+    {
         if (this->ttt_top_time.tv_sec != 0) {
             this->row_for_time(this->ttt_top_time) |
                 [tc](auto new_top) { tc->set_selection(new_top); };