1 files changed, 75 insertions, 0 deletions
diff --git a/test/fixedbugs/issue11945.go b/test/fixedbugs/issue11945.go
new file mode 100644
index 0000000..218d07a
--- /dev/null
+++ b/test/fixedbugs/issue11945.go
@@ -0,0 +1,75 @@
+// run
+
+// 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.
+
+package main
+
+import "fmt"
+
+// issue 17446
+const (
+	_ = real(0) // from bug report
+	_ = imag(0) // from bug report
+
+	// same as above, but exported for #43891
+	Real0 = real(0)
+	Imag0 = imag(0)
+
+	// if the arguments are untyped, the results must be untyped
+	// (and compatible with types that can represent the values)
+	_ int = real(1)
+	_ int = real('a')
+	_ int = real(2.0)
+	_ int = real(3i)
+
+	_ float32 = real(1)
+	_ float32 = real('a')
+	_ float32 = real(2.1)
+	_ float32 = real(3.2i)
+
+	_ float64 = real(1)
+	_ float64 = real('a')
+	_ float64 = real(2.1)
+	_ float64 = real(3.2i)
+
+	_ int = imag(1)
+	_ int = imag('a')
+	_ int = imag(2.1 + 3i)
+	_ int = imag(3i)
+
+	_ float32 = imag(1)
+	_ float32 = imag('a')
+	_ float32 = imag(2.1 + 3.1i)
+	_ float32 = imag(3i)
+
+	_ float64 = imag(1)
+	_ float64 = imag('a')
+	_ float64 = imag(2.1 + 3.1i)
+	_ float64 = imag(3i)
+)
+
+var tests = []struct {
+	code      string
+	got, want interface{}
+}{
+	{"real(1)", real(1), 1.0},
+	{"real('a')", real('a'), float64('a')},
+	{"real(2.0)", real(2.0), 2.0},
+	{"real(3.2i)", real(3.2i), 0.0},
+
+	{"imag(1)", imag(1), 0.0},
+	{"imag('a')", imag('a'), 0.0},
+	{"imag(2.1 + 3.1i)", imag(2.1 + 3.1i), 3.1},
+	{"imag(3i)", imag(3i), 3.0},
+}
+
+func main() {
+	// verify compile-time evaluated constant expressions
+	for _, test := range tests {
+		if test.got != test.want {
+			panic(fmt.Sprintf("%s: %v (%T) != %v (%T)", test.code, test.got, test.got, test.want, test.want))
+		}
+	}
+}