1 files changed, 15 insertions, 0 deletions
diff --git a/test/fixedbugs/issue19947.go b/test/fixedbugs/issue19947.go
new file mode 100644
index 0000000..3233469
--- /dev/null
+++ b/test/fixedbugs/issue19947.go
@@ -0,0 +1,15 @@
+// errorcheck
+
+// Copyright 2017 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.
+
+// No double error on ideal -> float{32,64} conversion overflow
+
+package issue19947
+
+var _ = float32(1) * 1e200 // ERROR "constant 1e\+200 overflows float32"
+var _ = float64(1) * 1e500 // ERROR "constant 1e\+500 overflows float64"
+
+var _ = complex64(1) * 1e200  // ERROR "constant 1e\+200 overflows complex64"
+var _ = complex128(1) * 1e500 // ERROR "constant 1e\+500 overflows complex128"