commit 43216611a5accd32a53fe77d4552a36f6ed30c74
author Bram Moolenaar <Bram@vim.org> Fri Mar 25 11:16:28 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Fri Mar 25 11:16:28 2022 +0000
tree d82710661e02df5456ef7ec45ca9cba2dcd3037f
parent 9dd42a631162a8561bd7c4b0e89afd21f7994d8c

patch 8.2.4622: Vim9: crash with :execute and :finish

Problem:    Vim9: Crash with :execute and :finish. (Sergey Vlasov)
Solution:   Check for NULL. (closes #10011)

src/eval.c

diff --git a/src/eval.c b/src/eval.c
index a963a15..4447186 100644
--- a/src/eval.c
+++ b/src/eval.c
@@ -2144,7 +2144,8 @@
 	p = skipwhite(next);
 	if (*p != NUL && !vim9_comment_start(p))
 	    return next;
-	(void)eval_next_line(evalarg);
+	if (eval_next_line(evalarg) == NULL)
+	    break;
     }
     return NULL;
 }
@@ -2199,6 +2200,9 @@
 							   GETLINE_CONCAT_ALL);
     else
 	line = next_line_from_context(evalarg->eval_cctx, TRUE);
+    if (line == NULL)
+	return NULL;
+
     ++evalarg->eval_break_count;
     if (gap->ga_itemsize > 0 && ga_grow(gap, 1) == OK)
     {