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-rw-r--r--test/recover3.go83
1 files changed, 83 insertions, 0 deletions
diff --git a/test/recover3.go b/test/recover3.go
new file mode 100644
index 0000000..1b26cb3
--- /dev/null
+++ b/test/recover3.go
@@ -0,0 +1,83 @@
+// run
+
+// Copyright 2010 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.
+
+// Test recovering from runtime errors.
+
+package main
+
+import (
+ "runtime"
+ "strings"
+)
+
+var didbug bool
+
+func bug() {
+ if didbug {
+ return
+ }
+ println("BUG")
+ didbug = true
+}
+
+func check(name string, f func(), err string) {
+ defer func() {
+ v := recover()
+ if v == nil {
+ bug()
+ println(name, "did not panic")
+ return
+ }
+ runt, ok := v.(runtime.Error)
+ if !ok {
+ bug()
+ println(name, "panicked but not with runtime.Error")
+ return
+ }
+ s := runt.Error()
+ if strings.Index(s, err) < 0 {
+ bug()
+ println(name, "panicked with", s, "not", err)
+ return
+ }
+ }()
+
+ f()
+}
+
+func main() {
+ var x int
+ var x64 int64
+ var p *[10]int
+ var q *[10000]int
+ var i int
+
+ check("int-div-zero", func() { println(1 / x) }, "integer divide by zero")
+ check("int64-div-zero", func() { println(1 / x64) }, "integer divide by zero")
+
+ check("nil-deref", func() { println(p[0]) }, "nil pointer dereference")
+ check("nil-deref-1", func() { println(p[1]) }, "nil pointer dereference")
+ check("nil-deref-big", func() { println(q[5000]) }, "nil pointer dereference")
+
+ i = 99999
+ var sl []int
+ p1 := new([10]int)
+ check("array-bounds", func() { println(p1[i]) }, "index out of range")
+ check("slice-bounds", func() { println(sl[i]) }, "index out of range")
+
+ var inter interface{}
+ inter = 1
+ check("type-concrete", func() { println(inter.(string)) }, "int, not string")
+ check("type-interface", func() { println(inter.(m)) }, "missing method m")
+
+ if didbug {
+ panic("recover3")
+ }
+}
+
+type m interface {
+ m()
+}