gc: diagnose invalid array bounds

Fixes issue 587.

R=ken2
CC=golang-dev
http://codereview.appspot.com/207085

2 files changed, 31 insertions, 0 deletions

diff --git a/test/fixedbugs/bug254.go b/test/fixedbugs/bug254.go
new file mode 100644
index 000000000..f351eb84e
--- /dev/null
+++ b/test/fixedbugs/bug254.go
@@ -0,0 +1,16 @@
+// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG: bug254
+
+// 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.
+
+package main
+
+var a [10]int
+var b [1e1]int
+
+func main() {
+	if len(a) != 10 || len(b) != 10 {
+		panicln("len", len(a), len(b))
+	}
+}
diff --git a/test/fixedbugs/bug255.go b/test/fixedbugs/bug255.go
new file mode 100644
index 000000000..4003a780c
--- /dev/null
+++ b/test/fixedbugs/bug255.go
@@ -0,0 +1,15 @@
+// errchk $G -e $D/$F.go
+
+// 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.
+
+package main
+
+var a [10]int	// ok
+var b [1e1]int	// ok
+var c [1.5]int	// ERROR "truncated"
+var d ["abc"]int	// ERROR "invalid array bound"
+var e [nil]int	// ERROR "invalid array bound"
+var f [e]int	// ERROR "invalid array bound"
+var g [1<<65]int	// ERROR "overflows"