Initial commit: Go 1.23 release state

test/clearfat.go

@@ -0,0 +1,68 @@
+// runoutput
+
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Check that {5,6,8,9}g/ggen.c:clearfat is zeroing the entire object.
+
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+const ntest = 1100
+
+func main() {
+	var decls, calls bytes.Buffer
+
+	for i := 1; i <= ntest; i++ {
+		s := strconv.Itoa(i)
+		decls.WriteString(strings.Replace(decl, "$", s, -1))
+		calls.WriteString(strings.Replace("poison$()\n\tclearfat$()\n\t", "$", s, -1))
+	}
+
+	program = strings.Replace(program, "$DECLS", decls.String(), 1)
+	program = strings.Replace(program, "$CALLS", calls.String(), 1)
+	fmt.Print(program)
+}
+
+var program = `package main
+
+var count int
+
+$DECLS
+
+func main() {
+	$CALLS
+	if count != 0 {
+		println("failed", count, "case(s)")
+	}
+}
+`
+
+const decl = `
+func poison$() {
+	// Grow and poison the stack space that will be used by clearfat$
+	var t [2*$]byte
+	for i := range t {
+		t[i] = 0xff
+	}
+}
+
+func clearfat$() {
+	var t [$]byte
+
+	for _, x := range t {
+		if x != 0 {
+//			println("clearfat$: index", i, "expected 0, got", x)
+			count++
+			break
+		}
+	}
+}
+`