1 files changed, 21 insertions, 0 deletions
diff --git a/src/internal/fuzz/counters_supported.go b/src/internal/fuzz/counters_supported.go
new file mode 100644
index 0000000..79e27d2
--- /dev/null
+++ b/src/internal/fuzz/counters_supported.go
@@ -0,0 +1,21 @@
+// Copyright 2021 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 (darwin || linux || windows || freebsd) && (amd64 || arm64)
+
+package fuzz
+
+import (
+	"unsafe"
+)
+
+// coverage returns a []byte containing unique 8-bit counters for each edge of
+// the instrumented source code. This coverage data will only be generated if
+// `-d=libfuzzer` is set at build time. This can be used to understand the code
+// coverage of a test execution.
+func coverage() []byte {
+	addr := unsafe.Pointer(&_counters)
+	size := uintptr(unsafe.Pointer(&_ecounters)) - uintptr(addr)
+	return unsafe.Slice((*byte)(addr), int(size))
+}