From 9f039c7cc73e2724348d5fac9c188b89da9ac9e4 Mon Sep 17 00:00:00 2001
From: MineRobber9000 <khuxkm@ttm.sh>
Date: Sat, 30 Nov 2024 05:20:58 -0500
Subject: [PATCH] Fix panic when incbin'ing an empty file

If you incbin an empty file, the code I wrote for including ranges assumes you gave it an invalid start and tries to report an error on an argument that wasn't provided. This fixes that by short-circuiting to returning an empty value if there are no bytes in the file.
---
 src/asm/resolver/eval_fn.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/asm/resolver/eval_fn.rs b/src/asm/resolver/eval_fn.rs
index 6fcceec1..9d189c3f 100644
--- a/src/asm/resolver/eval_fn.rs
+++ b/src/asm/resolver/eval_fn.rs
@@ -176,6 +176,11 @@ fn eval_builtin_incbin(
         }
     };
 
+    if bytes.len() == 0
+    {
+        return Ok(expr::Value::make_integer(util::BigInt::from_bytes_be(&[])));
+    }
+
     if start >= bytes.len()
     {
         query.report.error_span(