Allow Go 1.18

Author: dkegel-fastly

.github/workflows/build-macos.yml

@@ -9,13 +9,21 @@ on:
 
 jobs:
   build-macos:
-    name: build-macos
+    name: build-macos with Go ${{ matrix.go-version }}
     runs-on: macos-10.15
+    strategy:
+      matrix:
+        include:
+          - go-version: '1.17'
+            go-stable: true
+          - go-version: '1.18'
+            go-stable: false
     steps:
       - name: Install Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: ${{ matrix.go-version }}
+          stable: ${{ matrix.go-stable }}
       - name: Install Dependencies
         shell: bash
         run: |

.github/workflows/linux.yml

@@ -137,7 +137,15 @@ jobs:
   assert-test-linux:
     # Run all tests that can run on Linux, with LLVM assertions enabled to catch
     # potential bugs.
+    name: assert-test-linux with Go ${{ matrix.go-version }}
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          - go-version: '1.17'
+            go-stable: true
+          - go-version: '1.18'
+            go-stable: false
     steps:
       - name: Checkout
         uses: actions/checkout@v2
@@ -159,7 +167,8 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: ${{ matrix.go-version }}
+          stable: ${{ matrix.go-stable }}
       - name: Install Node.js
         uses: actions/setup-node@v2
         with:

.github/workflows/windows.yml

@@ -9,12 +9,21 @@ on:
 
 jobs:
   build-windows:
+    name: build-windows with Go ${{ matrix.go-version }}
     runs-on: windows-2019
+    strategy:
+      matrix:
+        include:
+          - go-version: '1.17'
+            go-stable: true
+          - go-version: '1.18'
+            go-stable: false
     steps:
       - name: Install Go
         uses: actions/setup-go@v2
         with:
-          go-version: '1.17'
+          go-version: ${{ matrix.go-version }}
+          stable: ${{ matrix.go-stable }}
       - uses: brechtm/setup-scoop@v2
       - name: Install Dependencies
         shell: bash

builder/config.go

@@ -33,8 +33,8 @@ func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
 	if err != nil {
 		return nil, fmt.Errorf("could not read version from GOROOT (%v): %v", goroot, err)
 	}
-	if major != 1 || minor < 15 || minor > 17 {
-		return nil, fmt.Errorf("requires go version 1.15 through 1.17, got go%d.%d", major, minor)
+	if major != 1 || minor < 15 || minor > 18 {
+		return nil, fmt.Errorf("requires go version 1.15 through 1.18, got go%d.%d", major, minor)
 	}
 
 	clangHeaderPath := getClangHeaderPath(goenv.Get("TINYGOROOT"))