From 6d7dc6d183badc8aaf9c00cfacd14ab031b0c8e6 Mon Sep 17 00:00:00 2001
From: Avinash Sajjanshetty <avi@turso.tech>
Date: Thu, 2 Oct 2025 16:01:56 +0530
Subject: [PATCH 1/2] enable checksums only if its opted in via feature flag

---
 core/storage/database.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/core/storage/database.rs b/core/storage/database.rs
index c44aed214..79b7d0a7a 100644
--- a/core/storage/database.rs
+++ b/core/storage/database.rs
@@ -48,8 +48,12 @@ impl IOContext {
 
 impl Default for IOContext {
     fn default() -> Self {
+        #[cfg(feature = "checksum")]
+        let encryption_or_checksum = EncryptionOrChecksum::Checksum(ChecksumContext::default());
+        #[cfg(not(feature = "checksum"))]
+        let encryption_or_checksum = EncryptionOrChecksum::None;
         Self {
-            encryption_or_checksum: EncryptionOrChecksum::Checksum(ChecksumContext::default()),
+            encryption_or_checksum,
         }
     }
 }

From 09ba4615ba29e5da7d80cb1b0396833b7b541bf1 Mon Sep 17 00:00:00 2001
From: Avinash Sajjanshetty <avi@turso.tech>
Date: Thu, 2 Oct 2025 16:11:18 +0530
Subject: [PATCH 2/2] return appropriate error if checksum was not compiled

---
 core/error.rs            | 2 ++
 core/storage/checksum.rs | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/core/error.rs b/core/error.rs
index 23ce9fe9b..87c686932 100644
--- a/core/error.rs
+++ b/core/error.rs
@@ -132,6 +132,8 @@ pub enum CompletionError {
         expected: u64,
         actual: u64,
     },
+    #[error("tursodb not compiled with checksum feature")]
+    ChecksumNotEnabled,
 }
 
 #[macro_export]
diff --git a/core/storage/checksum.rs b/core/storage/checksum.rs
index e7ba78975..a67376048 100644
--- a/core/storage/checksum.rs
+++ b/core/storage/checksum.rs
@@ -15,7 +15,11 @@ impl ChecksumContext {
 
     #[cfg(not(feature = "checksum"))]
     pub fn add_checksum_to_page(&self, _page: &mut [u8], _page_id: usize) -> Result<()> {
-        Ok(())
+        use crate::LimboError;
+        Err(LimboError::InternalError(
+            "tursodb must be recompiled with checksum feature in order to use checksums"
+                .to_string(),
+        ))
     }
 
     #[cfg(not(feature = "checksum"))]
@@ -24,7 +28,7 @@ impl ChecksumContext {
         _page: &mut [u8],
         _page_id: usize,
     ) -> std::result::Result<(), CompletionError> {
-        Ok(())
+        Err(CompletionError::ChecksumNotEnabled)
     }
 
     #[cfg(feature = "checksum")]