From 2c3b78b1259502ece606f7f687fa504f496d294c Mon Sep 17 00:00:00 2001
From: Rangi42 <sylvie.oukaour+rangi42@gmail.com>
Date: Tue, 28 Jan 2025 14:29:14 -0500
Subject: [PATCH] Try fixing the failure

`Expansion::advance()` can increase its offset beyond the size,
so I don't think this assumption was valid in the first place;
`BufferedContent::advance()` should be able to as well.
---
 src/asm/lexer.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/asm/lexer.cpp b/src/asm/lexer.cpp
index 0911273ad..3027baf7d 100644
--- a/src/asm/lexer.cpp
+++ b/src/asm/lexer.cpp
@@ -509,8 +509,9 @@ void BufferedContent::advance() {
 	if (offset == std::size(buf)) {
 		offset = 0; // Wrap around if necessary
 	}
-	assume(size > 0);
-	size--;
+	if (size > 0) {
+		size--;
+	}
 }
 
 void BufferedContent::refill() {