8dc2499aa6
gotools/ * Makefile.am (go_cmd_cgo_files): Add ast_go118.go (check-go-tool): Copy golang.org/x/tools directories. * Makefile.in: Regenerate. Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/384695
29 lines
840 B
Go
29 lines
840 B
Go
// Copyright 2021 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build (darwin || linux || windows || freebsd) && (amd64 || arm64)
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package fuzz
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import (
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"internal/unsafeheader"
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"unsafe"
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)
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// coverage returns a []byte containing unique 8-bit counters for each edge of
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// the instrumented source code. This coverage data will only be generated if
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// `-d=libfuzzer` is set at build time. This can be used to understand the code
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// coverage of a test execution.
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func coverage() []byte {
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addr := unsafe.Pointer(&_counters)
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size := uintptr(unsafe.Pointer(&_ecounters)) - uintptr(addr)
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var res []byte
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*(*unsafeheader.Slice)(unsafe.Pointer(&res)) = unsafeheader.Slice{
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Data: addr,
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Len: int(size),
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Cap: int(size),
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}
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return res
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}
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