[DO NOT MERGE] testing Windows CI failures

Author: aykevl

.github/workflows/build-macos.yml

@@ -26,6 +26,8 @@ jobs:
             goarch: arm64
     runs-on: ${{ matrix.os }}
     steps:
+      - name: exit early
+        run: command-does-not-exist
       - name: Install Dependencies
         run: |
           HOMEBREW_NO_AUTO_UPDATE=1 brew install qemu binaryen
@@ -125,6 +127,8 @@ jobs:
       matrix:
         version: [16, 17, 18]
     steps:
+      - name: exit early
+        run: command-does-not-exist
       - name: Set up Homebrew
         uses: Homebrew/actions/setup-homebrew@master
       - name: Fix Python symlinks

.github/workflows/linux.yml

@@ -20,6 +20,8 @@ jobs:
     container:
       image: golang:1.23-alpine
     steps:
+      - name: exit early
+        run: command-does-not-exist
       - name: Install apk dependencies
         # tar: needed for actions/cache@v4
         # git+openssh: needed for checkout (I think?)
@@ -166,6 +168,8 @@ jobs:
     # potential bugs.
     runs-on: ubuntu-latest
     steps:
+      - name: exit early
+        run: command-does-not-exist
       - name: Checkout
         uses: actions/checkout@v4
         with:

.github/workflows/nix.yml

@@ -15,6 +15,8 @@ jobs:
   nix-test:
     runs-on: ubuntu-latest
     steps:
+      - name: exit early
+        run: command-does-not-exist
       - name: Uninstall system LLVM
         # Hack to work around issue where we still include system headers for
         # some reason.

.github/workflows/sizediff.yml

@@ -15,6 +15,8 @@ jobs:
     permissions:
       pull-requests: write
     steps:
+      - name: exit early
+        run: command-does-not-exist
       # Prepare, install tools
       - name: Add GOBIN to $PATH
         run: |

.github/workflows/windows.yml

@@ -30,8 +30,11 @@ jobs:
           scoop install ninja binaryen
       - name: Checkout
         uses: actions/checkout@v4
-        with:
-          submodules: true
+        #with:
+        #  submodules: true
+      - name: submodules
+        shell: bash
+        run: git submodule update --init lib/mingw-w64
       - name: Install Go
         uses: actions/setup-go@v5
         with:
@@ -85,6 +88,11 @@ jobs:
         with:
           key: ${{ steps.cache-llvm-build.outputs.cache-primary-key }}
           path: llvm-build
+      - name: Test TinyGo
+        shell: bash
+        run: make test GOTESTFLAGS="-short -run=TestBuild"
+      - name: exit
+        run: command-does-not-exist
       - name: Cache wasi-libc sysroot
         uses: actions/cache@v4
         id: cache-wasi-libc
@@ -99,9 +107,6 @@ jobs:
           scoop install [email protected]
       - name: make gen-device
         run: make -j3 gen-device
-      - name: Test TinyGo
-        shell: bash
-        run: make test GOTESTFLAGS="-short"
       - name: Build TinyGo release tarball
         shell: bash
         run: make build/release -j4

main_test.go

@@ -421,7 +421,14 @@ func runTestWithConfig(name string, t *testing.T, options compileopts.Options, c
 	// Build the test binary.
 	stdout := &bytes.Buffer{}
 	_, err = buildAndRun(pkgName, config, stdout, cmdArgs, environmentVars, time.Minute, func(cmd *exec.Cmd, result builder.BuildResult) error {
-		return cmd.Run()
+		t.Log("command:", cmd)
+		err := cmd.Run()
+		if err == nil {
+			t.Log("  error is nil!")
+		} else {
+			t.Log("  error:", err)
+		}
+		return err
 	})
 	if err != nil {
 		w := &bytes.Buffer{}

src/runtime/runtime_windows.go

@@ -53,7 +53,7 @@ func mainCRTStartup() int {
 	runMain()
 
 	// For libc compatibility.
-	return 0
+	return 33
 }
 
 // Must be a separate function to get the correct stack pointer.
@@ -92,7 +92,9 @@ func os_runtime_args() []string {
 }
 
 func putchar(c byte) {
-	libc_putchar(int(c))
+	if libc_putchar(int(c)) != 0 {
+		libc_exit(42)
+	}
 }
 
 var heapSize uintptr = 128 * 1024 // small amount to start