OpenZeppelin · ernestognw · Aug 29, 2024 · Aug 29, 2024
diff --git a/contracts/metatx/ERC2771Forwarder.sol b/contracts/metatx/ERC2771Forwarder.sol
@@ -309,8 +309,7 @@ contract ERC2771Forwarder is EIP712, Nonces {
         bool success;
         uint256 returnSize;
         uint256 returnValue;
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             // Perform the staticcall and save the result in the scratch space.
             // | Location  | Content  | Content (Hex)                                                      |
             // |-----------|----------|--------------------------------------------------------------------|
@@ -362,8 +361,7 @@ contract ERC2771Forwarder is EIP712, Nonces {
             // We explicitly trigger invalid opcode to consume all gas and bubble-up the effects, since
             // neither revert or assert consume all gas since Solidity 0.8.20
             // https://docs.soliditylang.org/en/v0.8.20/control-structures.html#panic-via-assert-and-error-via-require
-            /// @solidity memory-safe-assembly
-            assembly {
+            assembly ("memory-safe") {
                 invalid()
             }
         }

diff --git a/contracts/proxy/Clones.sol b/contracts/proxy/Clones.sol
@@ -37,8 +37,7 @@ library Clones {
         if (address(this).balance < value) {
             revert Errors.InsufficientBalance(address(this).balance, value);
         }
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
             // of the `implementation` address with the bytecode before the address.
             mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
@@ -77,8 +76,7 @@ library Clones {
         if (address(this).balance < value) {
             revert Errors.InsufficientBalance(address(this).balance, value);
         }
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
             // of the `implementation` address with the bytecode before the address.
             mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
@@ -99,8 +97,7 @@ library Clones {
         bytes32 salt,
         address deployer
     ) internal pure returns (address predicted) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             let ptr := mload(0x40)
             mstore(add(ptr, 0x38), deployer)
             mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff)

diff --git a/contracts/token/ERC1155/ERC1155.sol b/contracts/token/ERC1155/ERC1155.sol
@@ -381,8 +381,7 @@ abstract contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI, IER
         uint256 element1,
         uint256 element2
     ) private pure returns (uint256[] memory array1, uint256[] memory array2) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             // Load the free memory pointer
             array1 := mload(0x40)
             // Set array length to 1

diff --git a/contracts/token/ERC1155/utils/ERC1155Utils.sol b/contracts/token/ERC1155/utils/ERC1155Utils.sol
@@ -38,8 +38,7 @@ library ERC1155Utils {
                     // non-IERC1155Receiver implementer
                     revert IERC1155Errors.ERC1155InvalidReceiver(to);
                 } else {
-                    /// @solidity memory-safe-assembly
-                    assembly {
+                    assembly ("memory-safe") {
                         revert(add(32, reason), mload(reason))
                     }
                 }
@@ -76,8 +75,7 @@ library ERC1155Utils {
                     // non-IERC1155Receiver implementer
                     revert IERC1155Errors.ERC1155InvalidReceiver(to);
                 } else {
-                    /// @solidity memory-safe-assembly
-                    assembly {
+                    assembly ("memory-safe") {
                         revert(add(32, reason), mload(reason))
                     }
                 }

diff --git a/contracts/token/ERC20/utils/ERC1363Utils.sol b/contracts/token/ERC20/utils/ERC1363Utils.sol
@@ -51,8 +51,7 @@ library ERC1363Utils {
             if (reason.length == 0) {
                 revert ERC1363InvalidReceiver(to);
             } else {
-                /// @solidity memory-safe-assembly
-                assembly {
+                assembly ("memory-safe") {
                     revert(add(32, reason), mload(reason))
                 }
             }
@@ -86,8 +85,7 @@ library ERC1363Utils {
             if (reason.length == 0) {
                 revert ERC1363InvalidSpender(spender);
             } else {
-                /// @solidity memory-safe-assembly
-                assembly {
+                assembly ("memory-safe") {
                     revert(add(32, reason), mload(reason))
                 }
             }

diff --git a/contracts/token/ERC721/utils/ERC721Utils.sol b/contracts/token/ERC721/utils/ERC721Utils.sol
@@ -37,8 +37,7 @@ library ERC721Utils {
                     // non-IERC721Receiver implementer
                     revert IERC721Errors.ERC721InvalidReceiver(to);
                 } else {
-                    /// @solidity memory-safe-assembly
-                    assembly {
+                    assembly ("memory-safe") {
                         revert(add(32, reason), mload(reason))
                     }
                 }

diff --git a/contracts/utils/Address.sol b/contracts/utils/Address.sol
@@ -139,8 +139,7 @@ library Address {
         // Look for revert reason and bubble it up if present
         if (returndata.length > 0) {
             // The easiest way to bubble the revert reason is using memory via assembly
-            /// @solidity memory-safe-assembly
-            assembly {
+            assembly ("memory-safe") {
                 let returndata_size := mload(returndata)
                 revert(add(32, returndata), returndata_size)
             }

diff --git a/contracts/utils/Arrays.sol b/contracts/utils/Arrays.sol
@@ -134,8 +134,7 @@ library Arrays {
      * @dev Pointer to the memory location of the first element of `array`.
      */
     function _begin(uint256[] memory array) private pure returns (uint256 ptr) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             ptr := add(array, 0x20)
         }
     }
@@ -377,8 +376,7 @@ library Arrays {
      */
     function unsafeAccess(address[] storage arr, uint256 pos) internal pure returns (StorageSlot.AddressSlot storage) {
         bytes32 slot;
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             slot := arr.slot
         }
         return slot.deriveArray().offset(pos).getAddressSlot();
@@ -391,8 +389,7 @@ library Arrays {
      */
     function unsafeAccess(bytes32[] storage arr, uint256 pos) internal pure returns (StorageSlot.Bytes32Slot storage) {
         bytes32 slot;
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             slot := arr.slot
         }
         return slot.deriveArray().offset(pos).getBytes32Slot();
@@ -405,8 +402,7 @@ library Arrays {
      */
     function unsafeAccess(uint256[] storage arr, uint256 pos) internal pure returns (StorageSlot.Uint256Slot storage) {
         bytes32 slot;
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             slot := arr.slot
         }
         return slot.deriveArray().offset(pos).getUint256Slot();
@@ -451,8 +447,7 @@ library Arrays {
      * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased.
      */
     function unsafeSetLength(address[] storage array, uint256 len) internal {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             sstore(array.slot, len)
         }
     }
@@ -463,8 +458,7 @@ library Arrays {
      * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased.
      */
     function unsafeSetLength(bytes32[] storage array, uint256 len) internal {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             sstore(array.slot, len)
         }
     }
@@ -475,8 +469,7 @@ library Arrays {
      * WARNING: this does not clear elements if length is reduced, of initialize elements if length is increased.
      */
     function unsafeSetLength(uint256[] storage array, uint256 len) internal {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             sstore(array.slot, len)
         }
     }

diff --git a/contracts/utils/Base64.sol b/contracts/utils/Base64.sol
@@ -52,8 +52,7 @@ library Base64 {
 
         string memory result = new string(resultLength);
 
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             // Prepare the lookup table (skip the first "length" byte)
             let tablePtr := add(table, 1)
 

diff --git a/contracts/utils/Create2.sol b/contracts/utils/Create2.sol
@@ -41,8 +41,7 @@ library Create2 {
         if (bytecode.length == 0) {
             revert Create2EmptyBytecode();
         }
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             addr := create2(amount, add(bytecode, 0x20), mload(bytecode), salt)
             // if no address was created, and returndata is not empty, bubble revert
             if and(iszero(addr), not(iszero(returndatasize()))) {
@@ -69,8 +68,7 @@ library Create2 {
      * `deployer`. If `deployer` is this contract's address, returns the same value as {computeAddress}.
      */
     function computeAddress(bytes32 salt, bytes32 bytecodeHash, address deployer) internal pure returns (address addr) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             let ptr := mload(0x40) // Get free memory pointer
 
             // |                   | ↓ ptr ...  ↓ ptr + 0x0B (start) ...  ↓ ptr + 0x20 ...  ↓ ptr + 0x40 ...   |

diff --git a/contracts/utils/Panic.sol b/contracts/utils/Panic.sol
@@ -45,8 +45,7 @@ library Panic {
     /// @dev Reverts with a panic code. Recommended to use with
     /// the internal constants with predefined codes.
     function panic(uint256 code) internal pure {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, 0x4e487b71)
             mstore(0x20, code)
             revert(0x1c, 0x24)

diff --git a/contracts/utils/ShortStrings.sol b/contracts/utils/ShortStrings.sol
@@ -64,8 +64,7 @@ library ShortStrings {
         uint256 len = byteLength(sstr);
         // using `new string(len)` would work locally but is not memory safe.
         string memory str = new string(32);
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(str, len)
             mstore(add(str, 0x20), sstr)
         }

diff --git a/contracts/utils/SlotDerivation.sol b/contracts/utils/SlotDerivation.sol
@@ -40,8 +40,7 @@ library SlotDerivation {
      * @dev Derive an ERC-7201 slot from a string (namespace).
      */
     function erc7201Slot(string memory namespace) internal pure returns (bytes32 slot) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, sub(keccak256(add(namespace, 0x20), mload(namespace)), 1))
             slot := and(keccak256(0x00, 0x20), not(0xff))
         }
@@ -60,8 +59,7 @@ library SlotDerivation {
      * @dev Derive the location of the first element in an array from the slot where the length is stored.
      */
     function deriveArray(bytes32 slot) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, slot)
             result := keccak256(0x00, 0x20)
         }
@@ -71,8 +69,7 @@ library SlotDerivation {
      * @dev Derive the location of a mapping element from the key.
      */
     function deriveMapping(bytes32 slot, address key) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, key)
             mstore(0x20, slot)
             result := keccak256(0x00, 0x40)
@@ -83,8 +80,7 @@ library SlotDerivation {
      * @dev Derive the location of a mapping element from the key.
      */
     function deriveMapping(bytes32 slot, bool key) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, key)
             mstore(0x20, slot)
             result := keccak256(0x00, 0x40)
@@ -95,8 +91,7 @@ library SlotDerivation {
      * @dev Derive the location of a mapping element from the key.
      */
     function deriveMapping(bytes32 slot, bytes32 key) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, key)
             mstore(0x20, slot)
             result := keccak256(0x00, 0x40)
@@ -107,8 +102,7 @@ library SlotDerivation {
      * @dev Derive the location of a mapping element from the key.
      */
     function deriveMapping(bytes32 slot, uint256 key) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, key)
             mstore(0x20, slot)
             result := keccak256(0x00, 0x40)
@@ -119,8 +113,7 @@ library SlotDerivation {
      * @dev Derive the location of a mapping element from the key.
      */
     function deriveMapping(bytes32 slot, int256 key) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             mstore(0x00, key)
             mstore(0x20, slot)
             result := keccak256(0x00, 0x40)
@@ -131,8 +124,7 @@ library SlotDerivation {
      * @dev Derive the location of a mapping element from the key.
      */
     function deriveMapping(bytes32 slot, string memory key) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             let length := mload(key)
             let begin := add(key, 0x20)
             let end := add(begin, length)
@@ -147,8 +139,7 @@ library SlotDerivation {
      * @dev Derive the location of a mapping element from the key.
      */
     function deriveMapping(bytes32 slot, bytes memory key) internal pure returns (bytes32 result) {
-        /// @solidity memory-safe-assembly
-        assembly {
+        assembly ("memory-safe") {
             let length := mload(key)
             let begin := add(key, 0x20)
             let end := add(begin, length)