From 1309c84a3cf837d0c57033f7eb5734a0556b1f49 Mon Sep 17 00:00:00 2001
From: Darryl Pogue <darryl@dpogue.ca>
Date: Mon, 30 Sep 2024 22:43:45 -0700
Subject: [PATCH] Replace fputc with ungetc to fix UB

Closes #185.
---
 streams.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/streams.cpp b/streams.cpp
index 5def001..00bf446 100644
--- a/streams.cpp
+++ b/streams.cpp
@@ -155,7 +155,7 @@ uint32_t DS::FileStream::size() const
 bool DS::FileStream::atEof()
 {
     int ch = fgetc(m_file);
-    fputc(ch, m_file);
+    ungetc(ch, m_file);
     return (ch == EOF);
 }