5g: defer vs optimizer bug

Fixes issue 1924.

R=ken2
CC=golang-dev
http://codereview.appspot.com/4802063

1 files changed, 25 insertions, 0 deletions

diff --git a/test/fixedbugs/bug364.go b/test/fixedbugs/bug364.go
new file mode 100644
index 000000000..a17453419
--- /dev/null
+++ b/test/fixedbugs/bug364.go
@@ -0,0 +1,25 @@
+package main
+
+import "fmt"
+
+var s string
+
+func accum(args ...interface{}) {
+	s += fmt.Sprintln(args...)
+}
+
+func f(){
+	v := 0.0
+	for i := 0; i < 3; i++ {
+		v += 0.1
+		defer accum(v)
+	}
+}
+
+func main() {
+	f()
+	if s != "0.30000000000000004\n0.2\n0.1\n" {
+		println("BUG: defer")
+		print(s)
+	}
+}