From b34d559c02c9e34c31d9026fe85e29229503ea05 Mon Sep 17 00:00:00 2001
From: Andrew Noyes <andrew@weaselab.dev>
Date: Fri, 14 Jun 2024 22:31:05 -0700
Subject: [PATCH] Strengthen valgrind checks

---
 VersionedMap.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/VersionedMap.cpp b/VersionedMap.cpp
index 125e24c..8303749 100644
--- a/VersionedMap.cpp
+++ b/VersionedMap.cpp
@@ -263,7 +263,7 @@ struct MemManager {
     if (next == firstUnaddressable) {
       mprotectSafe(base + firstUnaddressable, kUpsizeBytes,
                    PROT_READ | PROT_WRITE);
-      VALGRIND_MAKE_MEM_UNDEFINED(base + firstUnaddressable, kUpsizeBytes);
+      VALGRIND_MAKE_MEM_NOACCESS(base + firstUnaddressable, kUpsizeBytes);
       firstUnaddressable += kUpsizeNodes;
 #if SHOW_MEMORY
       mmapBytes = getBytes();
@@ -278,6 +278,7 @@ struct MemManager {
       }
     }
 
+    VALGRIND_MAKE_MEM_UNDEFINED(base + next, sizeof(Node));
     return next++;
   }
 
@@ -1682,4 +1683,4 @@ int main() {
 }
 #endif
 
-// GCOVR_EXCL_STOP
\ No newline at end of file
+// GCOVR_EXCL_STOP