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fix(programs): add MintCloseAuthority as restricted extension (M-03) #2263

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Merged
ananas-block merged 2 commits into from
Feb 10, 2026
Merged

fix(programs): add MintCloseAuthority as restricted extension (M-03) #2263

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f2da063
fix: add MintCloseAuthority as restricted extension (M-03)
ananas-block Feb 9, 2026
dbe5cc8
test: add MintCloseAuthority compression_only requirement tests
ananas-block Feb 10, 2026
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7 changes: 6 additions & 1 deletion program-libs/token-interface/src/token_2022_extensions.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -6,12 +6,13 @@ use crate::state::ExtensionStructConfig;
/// Restricted extension types that require compression_only mode.
/// These extensions have special behaviors (pausable, permanent delegate, fees, hooks,
/// default frozen state) that are incompatible with standard compressed token transfers.
pub const RESTRICTED_EXTENSION_TYPES: [ExtensionType; 5] = [
pub const RESTRICTED_EXTENSION_TYPES: [ExtensionType; 6] = [
ExtensionType::Pausable,
ExtensionType::PermanentDelegate,
ExtensionType::TransferFeeConfig,
ExtensionType::TransferHook,
ExtensionType::DefaultAccountState,
ExtensionType::MintCloseAuthority,
];
Comment on lines 6 to 16
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@coderabbitai coderabbitai bot Feb 9, 2026

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⚠️ Potential issue | 🟡 Minor

Stale doc comment — MintCloseAuthority not listed among restricted extensions.

The comment on lines 7–8 enumerates the restricted behaviors but omits MintCloseAuthority (mint close authority). Since you've added it to the array and is_restricted_extension, the comment should stay in sync.

📝 Suggested fix 
 /// Restricted extension types that require compression_only mode.
-/// These extensions have special behaviors (pausable, permanent delegate, fees, hooks,
-/// default frozen state) that are incompatible with standard compressed token transfers.
+/// These extensions have special behaviors (pausable, permanent delegate, fees, hooks,
+/// default frozen state, mint close authority) that are incompatible with standard compressed token transfers.
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
/// Restricted extension types that require compression_only mode.
/// These extensions have special behaviors (pausable, permanent delegate, fees, hooks,
/// default frozen state) that are incompatible with standard compressed token transfers.
pub const RESTRICTED_EXTENSION_TYPES: [ExtensionType; 5] = [
pub const RESTRICTED_EXTENSION_TYPES: [ExtensionType; 6] = [
ExtensionType::Pausable,
ExtensionType::PermanentDelegate,
ExtensionType::TransferFeeConfig,
ExtensionType::TransferHook,
ExtensionType::DefaultAccountState,
ExtensionType::MintCloseAuthority,
];
/// Restricted extension types that require compression_only mode.
/// These extensions have special behaviors (pausable, permanent delegate, fees, hooks,
/// default frozen state, mint close authority) that are incompatible with standard compressed token transfers.
pub const RESTRICTED_EXTENSION_TYPES: [ExtensionType; 6] = [
ExtensionType::Pausable,
ExtensionType::PermanentDelegate,
ExtensionType::TransferFeeConfig,
ExtensionType::TransferHook,
ExtensionType::DefaultAccountState,
ExtensionType::MintCloseAuthority,
];
🤖 Prompt for AI Agents 
In `@program-libs/token-interface/src/token_2022_extensions.rs` around lines 6 -
16, Update the stale doc comment above RESTRICTED_EXTENSION_TYPES to include
"mint close authority" (ExtensionType::MintCloseAuthority) among the listed
restricted behaviors so the comment matches the array and
is_restricted_extension logic; revise the sentence that lists pausable,
permanent delegate, fees, hooks, default frozen state to also mention mint close
authority (or "mint close authority (mint close)") for clarity.


/// Allowed mint extension types for Token accounts.
Expand Down Expand Up @@ -53,6 +54,7 @@ pub const fn is_restricted_extension(ext: &ExtensionType) -> bool {
| ExtensionType::TransferFeeConfig
| ExtensionType::TransferHook
| ExtensionType::DefaultAccountState
| ExtensionType::MintCloseAuthority
)
}

Expand All @@ -71,6 +73,8 @@ pub struct MintExtensionFlags {
pub has_transfer_fee: bool,
/// Whether the mint has the TransferHook extension (with nil program_id)
pub has_transfer_hook: bool,
/// Whether the mint has the MintCloseAuthority extension
pub has_mint_close_authority: bool,
}

impl MintExtensionFlags {
Expand Down Expand Up @@ -152,5 +156,6 @@ impl MintExtensionFlags {
|| self.has_transfer_fee
|| self.has_transfer_hook
|| self.has_default_account_state
|| self.has_mint_close_authority
}
}
9 changes: 8 additions & 1 deletion program-tests/compressed-token-test/tests/compress_only/restricted_required.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
//!
//! These tests verify that Light Token accounts cannot be created without compression_only
//! when the mint has restricted extensions (Pausable, PermanentDelegate, TransferFeeConfig,
//! TransferHook, DefaultAccountState).
//! TransferHook, DefaultAccountState, MintCloseAuthority).

use light_program_test::{
program_test::LightProgramTest, utils::assert::assert_rpc_error, ProgramTestConfig, Rpc,
Expand Down Expand Up @@ -96,6 +96,12 @@ async fn test_default_account_state_requires_compression_only() {
test_compression_only_required_for_extensions(&[ExtensionType::DefaultAccountState]).await;
}

#[tokio::test]
#[serial]
async fn test_mint_close_authority_requires_compression_only() {
test_compression_only_required_for_extensions(&[ExtensionType::MintCloseAuthority]).await;
}

#[tokio::test]
#[serial]
async fn test_multiple_restricted_requires_compression_only() {
Expand All @@ -104,6 +110,7 @@ async fn test_multiple_restricted_requires_compression_only() {
ExtensionType::PermanentDelegate,
ExtensionType::TransferFeeConfig,
ExtensionType::TransferHook,
ExtensionType::MintCloseAuthority,
])
.await;
}
3 changes: 3 additions & 0 deletions programs/compressed-token/program/src/extensions/check_mint_extensions.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -190,6 +190,7 @@ pub fn has_mint_extensions(mint_account: &AccountInfo) -> Result<MintExtensionFl
let mut has_transfer_fee = false;
let mut has_transfer_hook = false;
let mut has_default_account_state = false;
let mut has_mint_close_authority = false;

for ext in &extension_types {
if !ALLOWED_EXTENSION_TYPES.contains(ext) {
Expand All @@ -202,6 +203,7 @@ pub fn has_mint_extensions(mint_account: &AccountInfo) -> Result<MintExtensionFl
ExtensionType::TransferFeeConfig => has_transfer_fee = true,
ExtensionType::TransferHook => has_transfer_hook = true,
ExtensionType::DefaultAccountState => has_default_account_state = true,
ExtensionType::MintCloseAuthority => has_mint_close_authority = true,
_ => {}
}
}
Expand All @@ -224,5 +226,6 @@ pub fn has_mint_extensions(mint_account: &AccountInfo) -> Result<MintExtensionFl
default_state_frozen: default_account_state_frozen,
has_transfer_fee,
has_transfer_hook,
has_mint_close_authority,
})
}