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go/test/map1.go
Russ Cox 6363fc5aa6 cmd/gc: fix type checking loop
CL 4313064 fixed its test case but did not address a
general enough problem:

type T1 struct { F *T2 }
type T2 T1
type T3 T2

could still end up copying the definition of T1 for T2
before T1 was done being evaluated, or T3 before T2
was done.

In order to propagate the updates correctly,
record a copy of an incomplete type for re-execution
once the type is completed. Roll back CL 4313064.

Fixes #3709.

R=ken2
CC=golang-dev, lstoakes
https://golang.org/cl/6301059
2012-06-07 03:06:40 -04:00

63 lines
1.2 KiB
Go

// errorcheck
// Copyright 2011 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.
// Test map declarations of many types, including erroneous ones.
// Does not compile.
package main
func main() {}
type v bool
var (
// valid
_ map[int8]v
_ map[uint8]v
_ map[int16]v
_ map[uint16]v
_ map[int32]v
_ map[uint32]v
_ map[int64]v
_ map[uint64]v
_ map[int]v
_ map[uint]v
_ map[uintptr]v
_ map[float32]v
_ map[float64]v
_ map[complex64]v
_ map[complex128]v
_ map[bool]v
_ map[string]v
_ map[chan int]v
_ map[*int]v
_ map[struct{}]v
_ map[[10]int]v
// invalid
_ map[[]int]v // ERROR "invalid map key"
_ map[func()]v // ERROR "invalid map key"
_ map[map[int]int]v // ERROR "invalid map key"
_ map[T1]v // ERROR "invalid map key"
_ map[T2]v // ERROR "invalid map key"
_ map[T3]v // ERROR "invalid map key"
_ map[T4]v // ERROR "invalid map key"
_ map[T5]v
_ map[T6]v
_ map[T7]v
_ map[T8]v
)
type T1 []int
type T2 struct { F T1 }
type T3 []T4
type T4 struct { F T3 }
type T5 *int
type T6 struct { F T5 }
type T7 *T4
type T8 struct { F *T7 }