build: upgrade solidity version to 0.8.21

.solhint.json

@@ -3,7 +3,7 @@
   "rules": {
     "avoid-low-level-calls": "off",
     "code-complexity": ["error", 9],
-    "compiler-version": ["error", ">=0.8.19"],
+    "compiler-version": ["error", ">=0.8.21"],
     "contract-name-camelcase": "off",
     "const-name-snakecase": "off",
     "func-name-mixedcase": "off",

foundry.toml

@@ -16,7 +16,7 @@
   out = "out"
   script = "script"
   sender = "0x1804c8AB1F12E6bbf3894d4083f33e07309d1f38"
-  solc = "0.8.19"
+  solc = "0.8.21"
   src = "src"
   test = "test"
 

script/Base.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { Script } from "forge-std/Script.sol";
 

script/DeployComptroller.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { SablierV2Comptroller } from "../src/SablierV2Comptroller.sol";
 

script/DeployCore.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { SablierV2Comptroller } from "../src/SablierV2Comptroller.sol";
 import { SablierV2LockupDynamic } from "../src/SablierV2LockupDynamic.sol";

script/DeployCore2.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { ISablierV2NFTDescriptor } from "../src/interfaces/ISablierV2NFTDescriptor.sol";
 import { SablierV2Comptroller } from "../src/SablierV2Comptroller.sol";

script/DeployDeterministicComptroller.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { SablierV2Comptroller } from "../src/SablierV2Comptroller.sol";
 

script/DeployDeterministicCore.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { SablierV2Comptroller } from "../src/SablierV2Comptroller.sol";
 import { SablierV2LockupDynamic } from "../src/SablierV2LockupDynamic.sol";

script/DeployDeterministicCore2.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { ISablierV2NFTDescriptor } from "../src/interfaces/ISablierV2NFTDescriptor.sol";
 import { SablierV2Comptroller } from "../src/SablierV2Comptroller.sol";

script/DeployDeterministicLockupDynamic.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { ISablierV2Comptroller } from "../src/interfaces/ISablierV2Comptroller.sol";
 import { ISablierV2NFTDescriptor } from "../src/interfaces/ISablierV2NFTDescriptor.sol";

script/DeployDeterministicLockupLinear.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { ISablierV2Comptroller } from "../src/interfaces/ISablierV2Comptroller.sol";
 import { ISablierV2NFTDescriptor } from "../src/interfaces/ISablierV2NFTDescriptor.sol";

script/DeployDeterministicNFTDescriptor.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { SablierV2NFTDescriptor } from "../src/SablierV2NFTDescriptor.sol";
 

script/DeployLockupDynamic.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { ISablierV2Comptroller } from "../src/interfaces/ISablierV2Comptroller.sol";
 import { ISablierV2NFTDescriptor } from "../src/interfaces/ISablierV2NFTDescriptor.sol";

script/DeployLockupLinear.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { ISablierV2Comptroller } from "../src/interfaces/ISablierV2Comptroller.sol";
 import { ISablierV2NFTDescriptor } from "../src/interfaces/ISablierV2NFTDescriptor.sol";

script/DeployNFTDescriptor.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { SablierV2NFTDescriptor } from "../src/SablierV2NFTDescriptor.sol";
 

script/GenerateSVG.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";
 

script/Init.s.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19 <=0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

src/SablierV2Comptroller.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { UD60x18 } from "@prb/math/src/UD60x18.sol";

src/SablierV2LockupDynamic.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

src/SablierV2LockupLinear.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

src/SablierV2NFTDescriptor.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 // solhint-disable max-line-length,quotes
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20Metadata } from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
 import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";

src/abstracts/Adminable.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IAdminable } from "../interfaces/IAdminable.sol";
 import { Errors } from "../libraries/Errors.sol";

src/abstracts/NoDelegateCall.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { Errors } from "../libraries/Errors.sol";
 

src/abstracts/SablierV2Base.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

src/abstracts/SablierV2FlashLoan.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { SafeERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";

src/abstracts/SablierV2Lockup.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC4906 } from "@openzeppelin/contracts/interfaces/IERC4906.sol";
 import { ERC721 } from "@openzeppelin/contracts/token/ERC721/ERC721.sol";

src/interfaces/IAdminable.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 /// @title IAdminable
 /// @notice Contract module that provides a basic access control mechanism, with an admin that can be

src/interfaces/ISablierV2Base.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { UD60x18 } from "@prb/math/src/UD60x18.sol";

src/interfaces/ISablierV2Comptroller.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { UD60x18 } from "@prb/math/src/UD60x18.sol";

src/interfaces/ISablierV2Lockup.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";

src/interfaces/ISablierV2LockupDynamic.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

src/interfaces/ISablierV2LockupLinear.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

src/interfaces/ISablierV2NFTDescriptor.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";
 

src/interfaces/erc3156/IERC3156FlashBorrower.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 /// @title IERC3156FlashBorrower
 /// @notice Interface for ERC-3156 flash borrowers.

src/interfaces/erc3156/IERC3156FlashLender.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC3156FlashBorrower } from "./IERC3156FlashBorrower.sol";
 

src/interfaces/hooks/ISablierV2LockupRecipient.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 /// @title ISablierV2LockupRecipient
 /// @notice Interface for recipient contracts capable of reacting to cancellations, renouncements, and withdrawals.

src/interfaces/hooks/ISablierV2LockupSender.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 /// @title ISablierV2LockupSender
 /// @notice Interface for sender contracts capable of reacting to cancellations.

src/libraries/Errors.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { IERC721Metadata } from "@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol";

src/libraries/Helpers.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: BUSL-1.1
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { UD60x18, ud } from "@prb/math/src/UD60x18.sol";
 

src/libraries/NFTSVG.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 // solhint-disable quotes
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";
 

src/libraries/SVGElements.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 // solhint-disable max-line-length,quotes
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { Math } from "@openzeppelin/contracts/utils/math/Math.sol";
 import { Strings } from "@openzeppelin/contracts/utils/Strings.sol";

src/types/DataTypes.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { UD2x18 } from "@prb/math/src/UD2x18.sol";

src/types/Math.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 // solhint-disable no-unused-import
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 // Math.sol
 //

src/types/Tokens.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 // solhint-disable no-unused-import
-pragma solidity >=0.8.19;
+pragma solidity >=0.8.21;
 
 // Tokens.sol
 //

test/Base.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { ERC20 } from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

test/fork/Fork.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { IERC20Metadata } from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";

test/fork/LockupDynamic.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { UD60x18 } from "@prb/math/src/UD60x18.sol";

test/fork/LockupLinear.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import { UD60x18, ud } from "@prb/math/src/UD60x18.sol";

test/fork/assets/DAI.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

test/fork/assets/EURS.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

test/fork/assets/SHIB.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

test/fork/assets/USDC.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

test/fork/assets/USDT.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 

test/integration/Integration.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { Errors } from "src/libraries/Errors.sol";
 

test/integration/concrete/comptroller/protocol-fees/protocolFees.t.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: UNLICENSED
-pragma solidity >=0.8.19 <0.9.0;
+pragma solidity >=0.8.21 <0.9.0;
 
 import { UD60x18, ZERO } from "@prb/math/src/UD60x18.sol";