summaryrefslogtreecommitdiffstats
path: root/test/clearfat.go
diff options
context:
space:
mode:
Diffstat (limited to 'test/clearfat.go')
-rw-r--r--test/clearfat.go68
1 files changed, 68 insertions, 0 deletions
diff --git a/test/clearfat.go b/test/clearfat.go
new file mode 100644
index 0000000..45d5393
--- /dev/null
+++ b/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
+ }
+ }
+}
+`