libgo: update to go1.15rc1

Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/245157

1 files changed, 48 insertions, 0 deletions

diff --git a/libgo/go/runtime/panic_test.go b/libgo/go/runtime/panic_test.go
new file mode 100644
index 00000000000..b8a300f6b10
--- /dev/null
+++ b/libgo/go/runtime/panic_test.go
@@ -0,0 +1,48 @@
+// Copyright 2020 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 runtime_test
+
+import (
+	"strings"
+	"testing"
+)
+
+// Test that panics print out the underlying value
+// when the underlying kind is directly printable.
+// Issue: https://golang.org/issues/37531
+func TestPanicWithDirectlyPrintableCustomTypes(t *testing.T) {
+	tests := []struct {
+		name            string
+		wantPanicPrefix string
+	}{
+		{"panicCustomBool", `panic: main.MyBool(true)`},
+		{"panicCustomComplex128", `panic: main.MyComplex128(+3.210000e+001+1.000000e+001i)`},
+		{"panicCustomComplex64", `panic: main.MyComplex64(+1.100000e-001+3.000000e+000i)`},
+		{"panicCustomFloat32", `panic: main.MyFloat32(-9.370000e+001)`},
+		{"panicCustomFloat64", `panic: main.MyFloat64(-9.370000e+001)`},
+		{"panicCustomInt", `panic: main.MyInt(93)`},
+		{"panicCustomInt8", `panic: main.MyInt8(93)`},
+		{"panicCustomInt16", `panic: main.MyInt16(93)`},
+		{"panicCustomInt32", `panic: main.MyInt32(93)`},
+		{"panicCustomInt64", `panic: main.MyInt64(93)`},
+		{"panicCustomString", `panic: main.MyString("Panic")`},
+		{"panicCustomUint", `panic: main.MyUint(93)`},
+		{"panicCustomUint8", `panic: main.MyUint8(93)`},
+		{"panicCustomUint16", `panic: main.MyUint16(93)`},
+		{"panicCustomUint32", `panic: main.MyUint32(93)`},
+		{"panicCustomUint64", `panic: main.MyUint64(93)`},
+		{"panicCustomUintptr", `panic: main.MyUintptr(93)`},
+	}
+
+	for _, tt := range tests {
+		t := t
+		t.Run(tt.name, func(t *testing.T) {
+			output := runTestProg(t, "testprog", tt.name)
+			if !strings.HasPrefix(output, tt.wantPanicPrefix) {
+				t.Fatalf("%q\nis not present in\n%s", tt.wantPanicPrefix, output)
+			}
+		})
+	}
+}