Adding upstream version 1.22.1.upstream/1.22.1

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

1 files changed, 48 insertions, 0 deletions

diff --git a/test/fixedbugs/issue32288.go b/test/fixedbugs/issue32288.go
new file mode 100644
index 0000000..91c930c
--- /dev/null
+++ b/test/fixedbugs/issue32288.go
@@ -0,0 +1,48 @@
+// run
+
+// Copyright 2019 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
+
+type T struct {
+	s   [1]string
+	pad [16]uintptr
+}
+
+//go:noinline
+func f(t *int, p *int) []T {
+	var res []T
+	for {
+		var e *T
+		res = append(res, *e)
+	}
+}
+
+func main() {
+	defer func() {
+		useStack(100) // force a stack copy
+		// We're expecting a panic.
+		// The bug in this issue causes a throw, which this recover() will not squash.
+		recover()
+	}()
+	junk() // fill the stack with invalid pointers
+	f(nil, nil)
+}
+
+func useStack(n int) {
+	if n == 0 {
+		return
+	}
+	useStack(n - 1)
+}
+
+//go:noinline
+func junk() uintptr {
+	var a [128]uintptr // 1k of bad pointers on the stack
+	for i := range a {
+		a[i] = 0xaa
+	}
+	return a[12]
+}