From 9defefae9fbcb6958cddbfa778c1ea8605da8b8b Mon Sep 17 00:00:00 2001
From: dataisland <dataisland@outlook.com>
Date: Fri, 22 Sep 2023 00:21:20 -0500
Subject: [PATCH] Fix null-pointer-dereference in yasm_expr_get_intnum (#244)

---
 libyasm/expr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libyasm/expr.c b/libyasm/expr.c
index 5b0c418b..09ae1121 100644
--- a/libyasm/expr.c
+++ b/libyasm/expr.c
@@ -1264,7 +1264,7 @@ yasm_expr_get_intnum(yasm_expr **ep, int calc_bc_dist)
 {
     *ep = yasm_expr_simplify(*ep, calc_bc_dist);
 
-    if ((*ep)->op == YASM_EXPR_IDENT && (*ep)->terms[0].type == YASM_EXPR_INT)
+    if (*ep && (*ep)->op == YASM_EXPR_IDENT && (*ep)->terms[0].type == YASM_EXPR_INT)
         return (*ep)->terms[0].data.intn;
     else
         return (yasm_intnum *)NULL;
