Adding upstream version 1.21.8.upstream/1.21.8

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

1 files changed, 58 insertions, 0 deletions

diff --git a/test/fixedbugs/issue24799.go b/test/fixedbugs/issue24799.go
new file mode 100644
index 0000000..c805c86
--- /dev/null
+++ b/test/fixedbugs/issue24799.go
@@ -0,0 +1,58 @@
+// 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.
+
+// Loads of 8 byte go.strings cannot use DS relocation
+// in case the alignment is not a multiple of 4.
+
+package main
+
+import (
+        "fmt"
+)
+
+type Level string
+
+// The following are all go.strings. A link time error can
+// occur if an 8 byte load is used to load a go.string that is
+// not aligned to 4 bytes due to the type of relocation that
+// is generated for the instruction. A fix was made to avoid
+// generating an instruction with DS relocation for go.strings
+// since their alignment is not known until link time. 
+
+// This problem only affects go.string since other types have
+// correct alignment.
+
+const (
+        LevelBad Level = "badvals"
+        LevelNone Level = "No"
+        LevelMetadata Level = "Metadata"
+        LevelRequest Level = "Request"
+        LevelRequestResponse Level = "RequestResponse"
+)
+
+func ordLevel(l Level) int {
+        switch l {
+        case LevelMetadata:
+                return 1
+        case LevelRequest:
+                return 2
+        case LevelRequestResponse:
+                return 3
+        default:
+                return 0
+        }
+}
+
+//go:noinline
+func test(l Level) {
+        if ordLevel(l) < ordLevel(LevelMetadata) {
+                fmt.Printf("OK\n")
+        }
+}
+
+func main() {
+        test(LevelMetadata)
+}