From 7b5ec81d0729393c58e589b34e13a0786afb6e34 Mon Sep 17 00:00:00 2001
From: Enzo Cioppettini <48031343+ecioppettini@users.noreply.github.com>
Date: Sat, 7 Jun 2025 23:26:08 -0300
Subject: [PATCH] fix truncate_unuesed_mem dividing by 7 instead of 8

---
 third-party/wasmi/crates/wasmi/src/tracer/mod.rs | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/third-party/wasmi/crates/wasmi/src/tracer/mod.rs b/third-party/wasmi/crates/wasmi/src/tracer/mod.rs
index 8c026e1..2d26d8e 100644
--- a/third-party/wasmi/crates/wasmi/src/tracer/mod.rs
+++ b/third-party/wasmi/crates/wasmi/src/tracer/mod.rs
@@ -147,8 +147,9 @@ impl Tracer {
             .max();
 
         // Truncate to the largest 8-byte chunk that can accommodate the used highest address.
-        let new_len = highest_address.map_or(0, |addr| (addr / 7) + 1);
-
+        let new_len = highest_address.map_or(0, |addr| (addr / 8) + 1);
+        // Add an extra slot because reads and writes also access the next chunk (Q)
+        let new_len = new_len + 1;
         self.IS_mem.truncate(new_len as usize);
 
         self.execution_trace