continue
		}
		md = pmd
	}
	if md == nil {
		throw("runtime: no plugin module data")
	}
	if md.pluginpath == "" {
		throw("runtime: plugin has empty pluginpath")
	}
	if md.typemap != nil {
		return "", nil, nil, "plugin already loaded"
	}

	for _, pmd := range activeModules() {
		if pmd.pluginpath == md.pluginpath {
			md.bad = true
			return "", nil, nil, "plugin already loaded"
		}

by any [`//go:build` constraints](https://pkg.go.dev/cmd/go#hdr-Build_constraints)
in the file.)

For example, it will report a diagnostic for a reference to the
`reflect.TypeFor` function (introduced in go1.22) from a file in a
module whose go.mod file specifies `go 1.21`.

### Cgo {#cgo}

<!-- go.dev/issue/66456 -->
[cmd/cgo] supports the new `-ldflags` flag for passing flags to the C linker.

//
// If the current file is sparse, then the regions marked as a hole
// are read back as NUL-bytes.
//
// Calling Read on special types like [TypeLink], [TypeSymlink], [TypeChar],
// [TypeBlock], [TypeDir], and [TypeFifo] returns (0, [io.EOF]) regardless of what
// the [Header.Size] claims.
func (tr *Reader) Read(b []byte) (int, error) {
	if tr.err != nil {
		return 0, tr.err
	}

	}
	// Pre-build our metric types to avoid recompute them on each event
	adds := k8sEvents.With(typeTag.Value(otype), eventTag.Value("add"))
	updatesames := k8sEvents.With(typeTag.Value(otype), eventTag.Value("updatesame"))
	updates := k8sEvents.With(typeTag.Value(otype), eventTag.Value("update"))
	deletes := k8sEvents.With(typeTag.Value(otype), eventTag.Value("delete"))

	informer.AddEventHandler(
		controllers.EventHandler[T]{

	v, e any
}{
	{&BadPathTestA{}, &TagPathError{reflect.TypeFor[BadPathTestA](), "First", "items>item1", "Second", "items"}},
	{&BadPathTestB{}, &TagPathError{reflect.TypeFor[BadPathTestB](), "First", "items>item1", "Second", "items>item1>value"}},
	{&BadPathTestC{}, &TagPathError{reflect.TypeFor[BadPathTestC](), "First", "", "Second", "First"}},
	{&BadPathTestD{}, &TagPathError{reflect.TypeFor[BadPathTestD](), "First", "", "Second", "First"}},
}

			var typeArg ir.Node
			if s.srcName.Type().IsEmptyInterface() {
				typeArg = ir.NewConvExpr(base.Pos, ir.OCONVNOP, types.Types[types.TUINT8].PtrTo(), srcItab)
			} else {
				typeArg = itabType(srcItab)
			}
			caseVar := typecheck.TempAt(base.Pos, ir.CurFunc, types.Types[types.TINT])
			isw := ir.NewInterfaceSwitchStmt(base.Pos, caseVar, s.itabName, typeArg, dotHash, lsym)
			sw.Compiled.Append(isw)

CL 514775 - implements a performance optimization for accepted proposal https://go.dev/issue/59488
CL 484995 - x/sys CL implements accepted proposal https://go.dev/issue/59537 to add x/sys/unix API
CL 555597 - optimizes TypeFor (added in accepted proposal https://go.dev/issue/60088) for non-interface types; doesn't seem to need a release note

		}
	}
	s.errorf("can't evaluate field %s in type %s", fieldName, typ)
	panic("not reached")
}

var (
	errorType        = reflect.TypeFor[error]()
	fmtStringerType  = reflect.TypeFor[fmt.Stringer]()
	reflectValueType = reflect.TypeFor[reflect.Value]()
)

// evalCall executes a function or method call. If it's a method, fun already has the receiver bound, so

// are an error.
var DefaultParameterConverter defaultConverter

type defaultConverter struct{}

var _ ValueConverter = defaultConverter{}

var valuerReflectType = reflect.TypeFor[Valuer]()

// callValuerValue returns vr.Value(), with one exception:
// If vr.Value is an auto-generated method on a pointer type and the
// pointer is nil, it would panic at runtime in the panicwrap

pkg net/netip, method (AddrPort) Compare(AddrPort) int #61642
pkg os, method (*File) WriteTo(io.Writer) (int64, error) #58808
pkg reflect, func PtrTo //deprecated #59599
pkg reflect, func TypeFor[$0 interface{}]() Type #60088
pkg slices, func Concat[$0 interface{ ~[]$1 }, $1 interface{}](...$0) $0 #56353
pkg syscall (linux-386), type SysProcAttr struct, PidFD *int #51246