From 7a5e097160bec3d67d7bbe3c518cb1cda6fabb0a Mon Sep 17 00:00:00 2001
From: Hoorad Farrokh <hourrad.f@gmail.com>
Date: Sun, 13 Oct 2024 14:28:38 +1300
Subject: [PATCH] Fixed potential nullpointer de-reference in the
 buffer-get-bline-w-hint function

---
 buffer.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/buffer.c b/buffer.c
index 27eb500..95394de 100644
--- a/buffer.c
+++ b/buffer.c
@@ -702,6 +702,10 @@ int buffer_get_bline_w_hint(buffer_t *self, bint_t line_index, bline_t *opt_hint
 
     if (!opt_hint) {
         opt_hint = self->first_line;
+        if (!opt_hint) { // Satisfy scan-build lint
+            *ret_bline = NULL;
+            return MLBUF_ERR;
+        }
     }
 
     fwd = opt_hint;
@@ -1406,6 +1410,11 @@ static int _buffer_redo(buffer_t *self, int by_group) {
         // Get line to perform undo on
         bline = NULL;
         buffer_get_bline(self, action_to_redo->start_line_index, &bline);
+
+        if (!bline){
+            return MLBUF_ERR;
+        }
+
         MLBUF_BLINE_ENSURE_CHARS(bline);
         if (!bline) {
             return MLBUF_ERR;