Note that by allowing for this limited form of manual memory allocation
that use-after-free bugs are possible with regular Go values. This package
limits the impact of these use-after-free bugs by preventing reuse of freed
memory regions until the garbage collector is able to determine that it is
safe. Typically, a use-after-free bug will result in a fault and a helpful
error message, but this package reserves the right to not force a fault on

name: Pkg.go.dev bugs or feature requests
description: Issues or feature requests for the documentation site
title: "x/pkgsite: issue title"
labels: ["pkgsite"]
body:
  - type: markdown
    attributes:
      value: "Please answer these questions before submitting your issue. Thanks!"
  - type: input
    id: url
    attributes:
      label: "What is the URL of the page with the issue?"
    validations:
      required: true
  - type: input

name: Go vulnerability management - bugs and feature requests
description: Issues or feature requests about Go vulnerability management
title: "x/vuln: issue title"
labels: ["vulncheck or vulndb"]
body:
  - type: markdown
    attributes:

name: Gopls bugs or feature requests
description: Issues or feature requests for the Go language server (gopls)
title: "x/tools/gopls: issue title"
labels: ["gopls", "Tools"]
body:
  - type: markdown
    attributes:
      value: "Please answer these questions before submitting your issue. Thanks!"
  - type: input
    id: gopls-version
    attributes:
      label: "gopls version"
      description: "Output of `gopls -v version` on the command line"

# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
name: Bugs
description: The go command, standard library, or anything else
title: "import/path: issue title"

body:
  - type: markdown
    attributes:
      value: |

			t.Errorf("after too-large Grow, recover() = %v; want %v", err, ErrTooLarge)
		}
	}()

	buf := NewBuffer(make([]byte, 1))
	const maxInt = int(^uint(0) >> 1)
	buf.Grow(maxInt)
}

// Was a bug: used to give EOF reading empty slice at EOF.
func TestReadEmptyAtEOF(t *testing.T) {
	b := new(Buffer)
	slice := make([]byte, 0)
	n, err := b.Read(slice)
	if err != nil {
		t.Errorf("read error: %v", err)
	}

in unexpected and unpredictable ways.

The runtime/cgo.Handle type can be used to safely pass Go values
between Go and C. See the runtime/cgo package documentation for details.

Note: the current implementation has a bug. While Go code is permitted
to write nil or a C pointer (but not a Go pointer) to C memory, the
current implementation may sometimes cause a runtime error if the
contents of the C memory appear to be a Go pointer. Therefore, avoid

	}

	// Read in the archive with the OpenReader interface
	name := filepath.Join(t.TempDir(), "test.zip")
	err := os.WriteFile(name, data, 0644)
	if err != nil {
		t.Fatalf("Unable to write out the bugos zip entry")
	}
	r, err := OpenReader(name)
	if r != nil {
		defer r.Close()
	}

	if err != ErrInsecurePath {
		t.Fatalf("Error reading the archive, we expected ErrInsecurePath but got: %v", err)

	}
	if r.UnreadRune() == nil {
		t.Error("expected error after ReadSlice (4)")
	}
}

func TestUnreadRuneAtEOF(t *testing.T) {
	// UnreadRune/ReadRune should error at EOF (was a bug; used to panic)
	r := NewReader(strings.NewReader("x"))
	r.ReadRune()
	r.ReadRune()
	r.UnreadRune()
	_, _, err := r.ReadRune()
	if err == nil {
		t.Error("expected error at EOF")
	} else if err != io.EOF {

Go is the work of thousands of contributors. We appreciate your help!

To contribute, please read the contribution guidelines at https://go.dev/doc/contribute.

Note that the Go project uses the issue tracker for bug reports and
proposals only. See https://go.dev/wiki/Questions for a list of
places to ask questions about the Go language.

[rf]: https://reneefrench.blogspot.com/