top: afford another level of protection for line input <=== port of newlib 757a3452

______________________________ original newlib message

This commit just provides the final protection against
possible screen corruption when processing line input.

[ such corruption was limited to the input line only ]

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

1 files changed, 1 insertions, 1 deletions

diff --git a/top/top.c b/top/top.c
index 9e3574f..d6c8060 100644
--- a/top/top.c
+++ b/top/top.c
@@ -1423,7 +1423,7 @@ static char *ioline (const char *prompt) {
             pos = strlen(buf);
             break;
          default:                      // what we REALLY wanted (maybe)
-            if (bufNXT < bufMAX && scrNXT < Screen_cols) {
+            if (bufNXT < bufMAX && scrNXT < Screen_cols && strlen(buf) < bufMAX) {
                int tot = UTF8_tab[(unsigned char)key],
                    sav = pos;
                if (tot < 1) tot = 1;