From 3aede31cfc354a756d3f5b0e0e985231285eaeaf Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 19 May 2020 15:40:45 -0400
Subject: ccmake: Check that getmaxyx result width is non-negative

Otherwise GCC 10.1 issues a `-Wstringop-overflow=` diagnostic when
we use the width for indexing.
---
 Source/CursesDialog/cmCursesLongMessageForm.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Source/CursesDialog/cmCursesLongMessageForm.cxx b/Source/CursesDialog/cmCursesLongMessageForm.cxx
index 664ba2f..591c546 100644
--- a/Source/CursesDialog/cmCursesLongMessageForm.cxx
+++ b/Source/CursesDialog/cmCursesLongMessageForm.cxx
@@ -68,7 +68,7 @@ void cmCursesLongMessageForm::UpdateStatusBar()
     bar[i] = ' ';
   }
   int width;
-  if (x < cmCursesMainForm::MAX_WIDTH) {
+  if (x >= 0 && x < cmCursesMainForm::MAX_WIDTH) {
     width = x;
   } else {
     width = cmCursesMainForm::MAX_WIDTH - 1;
-- 
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