Adding upstream version 1.21.8.upstream/1.21.8

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 70 insertions, 0 deletions

diff --git a/test/fixedbugs/issue23837.go b/test/fixedbugs/issue23837.go
new file mode 100644
index 0000000..7ad5083
--- /dev/null
+++ b/test/fixedbugs/issue23837.go
@@ -0,0 +1,70 @@
+// run
+
+// Copyright 2018 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
+
+//go:noinline
+func f(p, q *struct{}) bool {
+	return *p == *q
+}
+
+type T struct {
+	x struct{}
+	y int
+}
+
+//go:noinline
+func g(p, q *T) bool {
+	return p.x == q.x
+}
+
+//go:noinline
+func h(p, q func() struct{}) bool {
+	return p() == q()
+}
+
+func fi(p, q *struct{}) bool {
+	return *p == *q
+}
+
+func gi(p, q *T) bool {
+	return p.x == q.x
+}
+
+func hi(p, q func() struct{}) bool {
+	return p() == q()
+}
+
+func main() {
+	shouldPanic(func() { f(nil, nil) })
+	shouldPanic(func() { g(nil, nil) })
+	shouldPanic(func() { h(nil, nil) })
+	shouldPanic(func() { fi(nil, nil) })
+	shouldPanic(func() { gi(nil, nil) })
+	shouldPanic(func() { hi(nil, nil) })
+	n := 0
+	inc := func() struct{} {
+		n++
+		return struct{}{}
+	}
+	h(inc, inc)
+	if n != 2 {
+		panic("inc not called")
+	}
+	hi(inc, inc)
+	if n != 4 {
+		panic("inc not called")
+	}
+}
+
+func shouldPanic(x func()) {
+	defer func() {
+		if recover() == nil {
+			panic("did not panic")
+		}
+	}()
+	x()
+}