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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package issues
import "fmt"
func issue7035() {
type T struct{ X int }
_ = func() {
fmt.Println() // must refer to imported fmt rather than the fmt below
}
fmt := new(T)
_ = fmt.X
}
func issue8066() {
const (
_ = float32(340282356779733661637539395458142568447)
_ = float32(340282356779733661637539395458142568448 /* ERROR cannot convert */ )
)
}
// Check that a missing identifier doesn't lead to a spurious error cascade.
func issue8799a() {
x, ok := missing /* ERROR undeclared */ ()
_ = !ok
_ = x
}
func issue8799b(x int, ok bool) {
x, ok = missing /* ERROR undeclared */ ()
_ = !ok
_ = x
}
func issue9182() {
type Point C /* ERROR undeclared */ .Point
// no error for composite literal based on unknown type
_ = Point{x: 1, y: 2}
}
func f0() (a []int) { return }
func f1() (a []int, b int) { return }
func f2() (a, b []int) { return }
func append_([]int, ...int) {}
func issue9473(a []int, b ...int) {
// variadic builtin function
_ = append(f0())
_ = append(f0(), f0()...)
_ = append(f1())
_ = append(f2 /* ERROR cannot use .* in argument */ ())
_ = append(f2()... /* ERROR cannot use ... */ )
_ = append(f0(), f1 /* ERROR 2-valued f1 */ ())
_ = append(f0(), f2 /* ERROR 2-valued f2 */ ())
_ = append(f0(), f1 /* ERROR 2-valued f1 */ ()...)
_ = append(f0(), f2 /* ERROR 2-valued f2 */ ()...)
// variadic user-defined function
append_(f0())
append_(f0(), f0()...)
append_(f1())
append_(f2 /* ERROR cannot use .* in argument */ ())
append_(f2()... /* ERROR cannot use ... */ )
append_(f0(), f1 /* ERROR 2-valued f1 */ ())
append_(f0(), f2 /* ERROR 2-valued f2 */ ())
append_(f0(), f1 /* ERROR 2-valued f1 */ ()...)
append_(f0(), f2 /* ERROR 2-valued f2 */ ()...)
}
// Check that embedding a non-interface type in an interface results in a good error message.
func issue10979() {
type _ interface {
int /* ERROR int is not an interface */
}
type T struct{}
type _ interface {
T /* ERROR T is not an interface */
}
type _ interface {
nosuchtype /* ERROR undeclared name: nosuchtype */
}
type _ interface {
fmt /* ERROR Nosuchtype not declared by package fmt */ .Nosuchtype
}
type _ interface {
nosuchpkg /* ERROR undeclared name: nosuchpkg */ .Nosuchtype
}
type I interface {
I /* ERROR I\.m \(value of type func\(I\)\) is not a type */ .m
m()
}
}
// issue11347
// These should not crash.
var a1, b1 /* ERROR cycle */ , c1 /* ERROR cycle */ b1 = 0 > 0<<""[""[c1]]>c1
var a2, b2 /* ERROR cycle */ = 0 /* ERROR mismatch */ /* ERROR mismatch */ > 0<<""[b2]
var a3, b3 /* ERROR cycle */ = int /* ERROR mismatch */ /* ERROR mismatch */ (1<<""[b3])
// issue10260
// Check that error messages explain reason for interface assignment failures.
type (
I0 interface{}
I1 interface{ foo() }
I2 interface{ foo(x int) }
T0 struct{}
T1 struct{}
T2 struct{}
)
func (*T1) foo() {}
func (*T2) foo(x int) {}
func issue10260() {
var (
i0 I0
i1 I1
i2 I2
t0 *T0
t1 *T1
t2 *T2
)
i1 = i0 /* ERROR cannot use .* missing method foo */
i1 = t0 /* ERROR cannot use .* missing method foo */
i1 = i2 /* ERROR cannot use .* wrong type for method foo */
i1 = t2 /* ERROR cannot use .* wrong type for method foo */
i2 = i1 /* ERROR cannot use .* wrong type for method foo */
i2 = t1 /* ERROR cannot use .* wrong type for method foo */
_ = func() I1 { return i0 /* ERROR cannot use .* missing method foo */ }
_ = func() I1 { return t0 /* ERROR cannot use .* missing method foo */ }
_ = func() I1 { return i2 /* ERROR cannot use .* wrong type for method foo */ }
_ = func() I1 { return t2 /* ERROR cannot use .* wrong type for method foo */ }
_ = func() I2 { return i1 /* ERROR cannot use .* wrong type for method foo */ }
_ = func() I2 { return t1 /* ERROR cannot use .* wrong type for method foo */ }
// a few more - less exhaustive now
f := func(I1, I2){}
f(i0 /* ERROR cannot use .* missing method foo */ , i1 /* ERROR cannot use .* wrong type for method foo */)
_ = [...]I1{i0 /* ERROR cannot use .* missing method foo */ }
_ = [...]I1{i2 /* ERROR cannot use .* wrong type for method foo */ }
_ = []I1{i0 /* ERROR cannot use .* missing method foo */ }
_ = []I1{i2 /* ERROR cannot use .* wrong type for method foo */ }
_ = map[int]I1{0: i0 /* ERROR cannot use .* missing method foo */ }
_ = map[int]I1{0: i2 /* ERROR cannot use .* wrong type for method foo */ }
make(chan I1) <- i0 /* ERROR cannot use .* in send: missing method foo */
make(chan I1) <- i2 /* ERROR cannot use .* in send: wrong type for method foo */
}
// Check that constants representable as integers are in integer form
// before being used in operations that are only defined on integers.
func issue14229() {
// from the issue
const _ = int64(-1<<63) % 1e6
// related
const (
a int = 3
b = 4.0
_ = a / b
_ = a % b
_ = b / a
_ = b % a
)
}
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