required:  []string{"A", "B", "C"},
			exception: []string{"B"},
			ok:        true,
			out:       "",
		},

		// Test that a feature required on a subset of ports is implicitly satisfied
		// by the same feature being implemented on all ports. That is, it shouldn't
		// say "pkg syscall (darwin-amd64), type RawSockaddrInet6 struct" is missing.
		// See https://go.dev/issue/4303.
		{

the built-in function <a href="#Handling_panics"><code>panic</code></a>
with a value of the implementation-defined interface type <code>runtime.Error</code>.
That type satisfies the predeclared interface type
<a href="#Errors"><code>error</code></a>.
The exact error values that
represent distinct run-time error conditions are unspecified.
</p>

<pre>
package runtime

// TestReadTruncation test the ending condition on various truncated files and
// that truncated files are still detected even if the underlying io.Reader
// satisfies io.Seeker.
func TestReadTruncation(t *testing.T) {
	var ss []string
	for _, p := range []string{
		"testdata/gnu.tar",
		"testdata/ustar-file-reg.tar",
		"testdata/pax-path-hdr.tar",

type parameter list    type arguments    after substitution

[P any]                int               int satisfies any
[S ~[]E, E any]        []int, int        []int satisfies ~[]int, int satisfies any
[P io.Writer]          string            illegal: string doesn't satisfy io.Writer
[P comparable]         any               any satisfies (but does not implement) comparable
</pre>

<p>

pkg go/ast, type File struct, FileStart token.Pos #53202
pkg go/ast, type RangeStmt struct, Range token.Pos #50429
pkg go/token, method (*FileSet) RemoveFile(*File) #53200
pkg go/types, func Satisfies(Type, *Interface) bool #56548
pkg io/fs, var SkipAll error #47209
pkg io, func NewOffsetWriter(WriterAt, int64) *OffsetWriter #45899
pkg io, method (*OffsetWriter) Seek(int64, int) (int64, error) #45899

)

// tagKey returns the tag-based key to use in the pkgCache.
// It is a comma-separated string; the first part is dir, the rest tags.
// The satisfied tags are derived from context but only those that
// matter (the ones listed in the tags argument plus GOOS and GOARCH) are used.
// The tags list, which came from go/build's Package.AllTags,
// is known to be sorted.