cmd/compile: reject large floating point exponents without math/big
For #11326 (but not a fix).
Change-Id: Ic51814f5cd7357427c3fd990a5522775d05e7987
Reviewed-on: https://go-review.googlesource.com/11673
Reviewed-by: Robert Griesemer <gri@golang.org>
diff --git a/test/fixedbugs/issue11326b.go b/test/fixedbugs/issue11326b.go
new file mode 100644
index 0000000..00effbc
--- /dev/null
+++ b/test/fixedbugs/issue11326b.go
@@ -0,0 +1,44 @@
+// run
+
+// Copyright 2015 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
+
+func main() {
+ /* TODO(rsc): Should work but does not. See golang.org/issue/11326.
+ {
+ const n = 1e2147483647
+ const d = 1e2147483646
+ x := n / d
+ if x != 10.0 {
+ println("incorrect value:", x)
+ }
+ }
+ {
+ const n = 1e214748364
+ const d = 1e214748363
+ x := n / d
+ if x != 10.0 {
+ println("incorrect value:", x)
+ }
+ }
+ */
+ {
+ const n = 1e21474836
+ const d = 1e21474835
+ x := n / d
+ if x != 10.0 {
+ println("incorrect value:", x)
+ }
+ }
+ {
+ const n = 1e2147483
+ const d = 1e2147482
+ x := n / d
+ if x != 10.0 {
+ println("incorrect value:", x)
+ }
+ }
+}
