err.report()
					continue L
				}
			}
			seen[val] = append(seen[val], valueType{v.Pos(), v.typ})
		}
	}
}

// isNil reports whether the expression e denotes the predeclared value nil.
func (check *Checker) isNil(e syntax.Expr) bool {
	// The only way to express the nil value is by literally writing nil (possibly in parentheses).
	if name, _ := syntax.Unparen(e).(*syntax.Name); name != nil {

github.com/nishanths/exhaustive v0.12.0/go.mod h1:mEZ95wPIZW+x8kC4TgC+9YCUgiST7ecevsVDTgc2obs=
github.com/nishanths/predeclared v0.2.2 h1:V2EPdZPliZymNAn79T8RkNApBjMmVKh5XRpLm/w98Vk=
github.com/nishanths/predeclared v0.2.2/go.mod h1:RROzoN6TnGQupbC+lqggsOlcgysk3LMK/HI84Mp280c=
github.com/nunnatsa/ginkgolinter v0.15.2 h1:N2ORxUxPU56R9gsfLIlVVvCv/V/VVou5qVI1oBKBNHg=

<h3 id="symbols">Symbols</h3>

<p>
Some symbols, such as <code>R1</code> or <code>LR</code>,
are predefined and refer to registers.
The exact set depends on the architecture.
</p>

<p>
There are four predeclared symbols that refer to pseudo-registers.
These are not real registers, but rather virtual registers maintained by
the toolchain, such as a frame pointer.
The set of pseudo-registers is the same for all architectures:
</p>

// A package that redeclares common builtin names.
package a

var true = 0 == 1
var false = 0 == 0
var nil = 1

const append = 42

type error bool
type int interface{}

func len(interface{}) int32 { return 42 }

func Test() {
	var array [append]int
	if true {
		panic("unexpected builtin true instead of redeclared one")
	}
	if !false {

// license that can be found in the LICENSE file.

// Issue 1871.

package p

type a interface {
	foo(x int) (x int) // ERROR "duplicate argument|redefinition|redeclared"
}

/*
Previously:

bug.go:1 x redclared in this block
    previous declaration at bug.go:1

				fn(i, n.Name, r.Type)
				i++
			}
		}
	}
}

func c(repr string, args ...interface{}) *TypeRepr {
	return &TypeRepr{repr, args}
}

// Map predeclared Go types to Type.
var goTypes = map[string]*Type{
	"bool":       {Size: 1, Align: 1, C: c("GoUint8")},
	"byte":       {Size: 1, Align: 1, C: c("GoUint8")},
	"int":        {Size: 0, Align: 0, C: c("GoInt")},

	F2(i, i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"
	F3() (i, i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"
}

type T1 func(i, i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"
type T2 func(i int) (i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"

	{
		// simple redeclaration
		i := f1()
		i := f1() // ERROR "redeclared|no new"
		_ = i
	}
	{
		// change of type for f
		i, f, s := f3()
		f, g, t := f3() // ERROR "redeclared|cannot assign|incompatible|cannot use"
		_, _, _, _, _ = i, f, s, g, t
	}
	{
		// change of type for i
		i, f, s := f3()
		j, i, t := f3() // ERROR "redeclared|cannot assign|incompatible|cannot use"
		_, _, _, _, _ = i, f, s, j, t
	}

	F2 func(x, y, z float32)
	F3 func(x, y, x /* ERROR "redeclared" */ float32)
	F4 func() (x, y, x /* ERROR "redeclared" */ float32)
	F5 func(x int) (x /* ERROR "redeclared" */ float32)
	F6 func(x ...int)

	I1 interface{}
	I2 interface {
		m1()
	}
	I3 interface {
		m1()
		m1 /* ERROR "duplicate method m1" */ ()
	}
	I4 interface {
		m1(x, y, x /* ERROR "redeclared" */ float32)

	F2(i, i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"
	F3() (i, i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"
}

var T1 func(i, i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"
var T2 func(i int) (i int) // ERROR "duplicate argument i|redefinition|previous|redeclared"