From 87a239f37c86a7d1355e274950972bb42079d441 Mon Sep 17 00:00:00 2001
From: Alex Ling <al4423@ic.ac.uk>
Date: Tue, 25 Feb 2025 18:20:50 +0000
Subject: [PATCH] fix: alignment issue with stack in read

---
 src/main/wacc/backend/asmGenerator.scala | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/wacc/backend/asmGenerator.scala b/src/main/wacc/backend/asmGenerator.scala
index e2ef7c9..0d02653 100644
--- a/src/main/wacc/backend/asmGenerator.scala
+++ b/src/main/wacc/backend/asmGenerator.scala
@@ -92,10 +92,12 @@ object asmGenerator {
         labelGenerator.getLabel(Builtin.Read),
         List(
           stack.align(),
+          stack.reserve(),
           stack.push(RSI),
           Load(RSI, stack.head),
           assemblyIR.Call(CLibFunc.Scanf),
-          stack.pop(RAX)
+          stack.pop(RAX),
+          stack.drop()
         )
       )
   }