Adding upstream version 1.22.1.upstream/1.22.1

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

1 files changed, 31 insertions, 0 deletions

diff --git a/src/runtime/cgo/mmap.go b/src/runtime/cgo/mmap.go
new file mode 100644
index 0000000..144af2b
--- /dev/null
+++ b/src/runtime/cgo/mmap.go
@@ -0,0 +1,31 @@
+// Copyright 2015 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.
+
+//go:build (linux && (amd64 || arm64 || loong64)) || (freebsd && amd64)
+
+package cgo
+
+// Import "unsafe" because we use go:linkname.
+import _ "unsafe"
+
+// When using cgo, call the C library for mmap, so that we call into
+// any sanitizer interceptors. This supports using the memory
+// sanitizer with Go programs. The memory sanitizer only applies to
+// C/C++ code; this permits that code to see the Go code as normal
+// program addresses that have been initialized.
+
+// To support interceptors that look for both mmap and munmap,
+// also call the C library for munmap.
+
+//go:cgo_import_static x_cgo_mmap
+//go:linkname x_cgo_mmap x_cgo_mmap
+//go:linkname _cgo_mmap _cgo_mmap
+var x_cgo_mmap byte
+var _cgo_mmap = &x_cgo_mmap
+
+//go:cgo_import_static x_cgo_munmap
+//go:linkname x_cgo_munmap x_cgo_munmap
+//go:linkname _cgo_munmap _cgo_munmap
+var x_cgo_munmap byte
+var _cgo_munmap = &x_cgo_munmap