test/fixedbugs: update overly restrictive test case

See discussion in https://go-review.googlesource.com/14830 .

Change-Id: I94f25f92b8cdaa509d2c335865a645228425804d
Reviewed-on: https://go-review.googlesource.com/14837
Reviewed-by: Ian Lance Taylor <iant@golang.org>

diff --git a/test/fixedbugs/issue11326.go b/test/fixedbugs/issue11326.go
index bb197962322d66da68422c28b84ac387cebb2d5b..85f56a3dda182dff56cf0a6774e299a139e93990 100644 (file)
--- a/test/fixedbugs/issue11326.go
+++ b/test/fixedbugs/issue11326.go
@@ -9,8 +9,15 @@
 package main
 
 func main() {
-       var _ = 1e2147483647 // ERROR "constant too large"
-       var _ = 1e646456993  // ERROR "constant too large"
+       // The gc compiler implementation uses the minimally required 32bit
+       // binary exponent, so these constants cannot be represented anymore
+       // internally. However, the language spec does not preclude other
+       // implementations from handling these. Don't check the error.
+       // var _ = 1e2147483647 // "constant too large"
+       // var _ = 1e646456993  // "constant too large"
+
+       // Any implementation must be able to handle these constants at
+       // compile time (even though they cannot be assigned to a float64).
        var _ = 1e646456992  // ERROR "1.00000e\+646456992 overflows float64"
        var _ = 1e64645699   // ERROR "1.00000e\+64645699 overflows float64"
        var _ = 1e6464569    // ERROR "1.00000e\+6464569 overflows float64"
@@ -19,5 +26,6 @@ func main() {
        var _ = 1e6464       // ERROR "1.00000e\+6464 overflows float64"
        var _ = 1e646        // ERROR "1.00000e\+646 overflows float64"
        var _ = 1e309        // ERROR "1.00000e\+309 overflows float64"
+
        var _ = 1e308
 }