Merge pull request #4681 from NomicFoundation/feature/add-support-for-solc-0.8.23

Add support for solc 0.8.23

Author: fvictorio

.changeset/dirty-pots-exercise.md

@@ -0,0 +1,5 @@
+---
+"hardhat": patch
+---
+
+Added support for solc 0.8.23

docs/src/content/hardhat-runner/docs/reference/solidity-support.md

@@ -13,7 +13,7 @@ These are the versions of Solidity that you can expect to fully work with Hardha
 - Any 0.5.x version starting from 0.5.1
 - Any 0.6.x version
 - Any 0.7.x version
-- Any 0.8.x version up to and including 0.8.22
+- Any 0.8.x version up to and including 0.8.23
 
 We recommend against using Hardhat with newer, unsupported versions of Solidity. But if you need to do so; please read on.
 

docs/src/model/markdown.tsx

@@ -104,7 +104,7 @@ export const withoutComments = (content: string) => {
 };
 
 export const replacePlaceholders = (content: string) => {
-  const recommendedSolcVersion = "0.8.19";
+  const recommendedSolcVersion = "0.8.23";
   const latestPragma = "^0.8.0";
   const hardhatPackageJson = fs
     .readFileSync(

packages/hardhat-core/src/internal/hardhat-network/stack-traces/constants.ts

@@ -1,2 +1,2 @@
-export const SUPPORTED_SOLIDITY_VERSION_RANGE = "<=0.8.22";
+export const SUPPORTED_SOLIDITY_VERSION_RANGE = "<=0.8.23";
 export const FIRST_SOLC_VERSION_SUPPORTED = "0.5.1";

packages/hardhat-core/src/internal/solidity/compiler/solc-info.ts

@@ -59,6 +59,7 @@ const defaultEvmTargets: { [key: string]: string } = {
   "0.8.20": "shanghai",
   "0.8.21": "shanghai",
   "0.8.22": "shanghai",
+  "0.8.23": "shanghai",
 };
 
 export function getEvmVersionFromSolcVersion(

packages/hardhat-core/test/builtin-tasks/compile.ts

@@ -19,6 +19,7 @@ import {
   getAllFilesMatchingSync,
   getRealPathSync,
 } from "../../src/internal/util/fs-utils";
+import { getLatestSupportedVersion } from "../internal/hardhat-network/stack-traces/compilers-list";
 
 function assertFileExists(pathToFile: string) {
   assert.isTrue(
@@ -46,6 +47,40 @@ describe("compile task", function () {
     );
   }
 
+  describe("compile with latest solc version", function () {
+    // The 'hardhat.config.js' and 'A.sol' files need to be updated each time a new solc version is released
+
+    useFixtureProject("compilation-latest-solc-version");
+    useEnvironment();
+
+    it("should have the last version of solc in the 'hardhat.config.js' and 'A.sol' files", async function () {
+      // Test to check that the last version of solc is being tested
+      const userConfigSolcVersion = this.env.userConfig.solidity;
+
+      const lastSolcVersion = getLatestSupportedVersion();
+
+      assert.equal(
+        userConfigSolcVersion,
+        lastSolcVersion,
+        `The version of solc in the user config is not the last one. Expected '${lastSolcVersion}' but got '${userConfigSolcVersion}'. Did you forget to update the test?`
+      );
+    });
+
+    it("should compile and emit artifacts using the latest solc version", async function () {
+      await this.env.run("compile");
+
+      assertFileExists(path.join("artifacts", "contracts", "A.sol", "A.json"));
+      assertBuildInfoExists(
+        path.join("artifacts", "contracts", "A.sol", "A.dbg.json")
+      );
+
+      const buildInfos = getBuildInfos();
+      assert.lengthOf(buildInfos, 1);
+
+      assertValidJson(buildInfos[0]);
+    });
+  });
+
   describe("project with single file", function () {
     useFixtureProject("compilation-single-file");
     useEnvironment();

packages/hardhat-core/test/fixture-projects/compilation-latest-solc-version/.gitignore

@@ -0,0 +1,2 @@
+artifacts/
+cache/

packages/hardhat-core/test/fixture-projects/compilation-latest-solc-version/contracts/A.sol

@@ -0,0 +1,3 @@
+pragma solidity ^0.8.23;
+
+contract A {}

packages/hardhat-core/test/fixture-projects/compilation-latest-solc-version/hardhat.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  solidity: "0.8.23",
+};

packages/hardhat-core/test/internal/hardhat-network/stack-traces/compilers-list.ts

@@ -196,7 +196,6 @@ export const solidityCompilers: SolidityCompiler[] = [
   {
     solidityVersion: "0.8.20",
     compilerPath: "soljson-v0.8.20+commit.a1b79de6.js",
-    latestSolcVersion: true,
   },
   {
     solidityVersion: "0.8.20",
@@ -205,7 +204,6 @@ export const solidityCompilers: SolidityCompiler[] = [
       runs: 200,
       viaIR: true,
     },
-    latestSolcVersion: true,
   },
   {
     solidityVersion: "0.8.21",
@@ -235,6 +233,20 @@ export const solidityCompilers: SolidityCompiler[] = [
     },
     latestSolcVersion: true,
   },
+  {
+    solidityVersion: "0.8.23",
+    compilerPath: "soljson-v0.8.23+commit.f704f362.js",
+    latestSolcVersion: true,
+  },
+  {
+    solidityVersion: "0.8.23",
+    compilerPath: "soljson-v0.8.23+commit.f704f362.js",
+    optimizer: {
+      runs: 200,
+      viaIR: true,
+    },
+    latestSolcVersion: true,
+  },
 ];
 
 export const getLatestSupportedVersion = () =>