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-rw-r--r--test/fixedbugs/bug494.go51
1 files changed, 51 insertions, 0 deletions
diff --git a/test/fixedbugs/bug494.go b/test/fixedbugs/bug494.go
new file mode 100644
index 0000000..42f1879
--- /dev/null
+++ b/test/fixedbugs/bug494.go
@@ -0,0 +1,51 @@
+// run
+
+// 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.
+
+// Gccgo incorrectly executed functions multiple times when they
+// appeared in a composite literal that required a conversion between
+// different interface types.
+
+package main
+
+type MyInt int
+
+var c MyInt
+
+func (c *MyInt) S(i int) {
+ *c = MyInt(i)
+}
+
+func (c *MyInt) V() int {
+ return int(*c)
+}
+
+type i1 interface {
+ S(int)
+ V() int
+}
+
+type i2 interface {
+ V() int
+}
+
+type s struct {
+ i i2
+}
+
+func f() i1 {
+ c++
+ return &c
+}
+
+func main() {
+ p := &s{f()}
+ if v := p.i.V(); v != 1 {
+ panic(v)
+ }
+ if c != 1 {
+ panic(c)
+ }
+}