go/test/switch3.go

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// 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.
// Verify that erroneous switch statements are detected by the compiler.
// Does not compile.
package main
type I interface {
M()
}
func bad() {
var i I
var s string
switch i {
test: match gccgo error messages complit1.go:37:34: error: may only omit types within composite literals of slice, array, or map type complit1.go:38:19: error: may only omit types within composite literals of slice, array, or map type complit1.go:18:21: error: slice of unaddressable value complit1.go:19:10: error: slice of unaddressable value complit1.go:20:9: error: slice of unaddressable value convert1.go:28:13: error: invalid type conversion convert1.go:32:12: error: invalid type conversion (cannot use type string as type Tint64) convert1.go:36:12: error: invalid type conversion convert1.go:37:13: error: invalid type conversion convert1.go:40:11: error: invalid type conversion convert1.go:41:12: error: invalid type conversion convert1.go:44:12: error: invalid type conversion convert1.go:46:13: error: invalid type conversion convert1.go:48:11: error: invalid type conversion convert1.go:50:12: error: invalid type conversion convert1.go:52:6: error: invalid type conversion convert1.go:53:12: error: invalid type conversion convert1.go:54:12: error: invalid type conversion convert1.go:56:13: error: invalid type conversion convert1.go:57:11: error: invalid type conversion convert1.go:58:11: error: invalid type conversion convert1.go:64:13: error: invalid type conversion convert1.go:68:12: error: invalid type conversion (cannot use type Tstring as type Tint64) convert1.go:72:12: error: invalid type conversion convert1.go:73:13: error: invalid type conversion convert1.go:76:11: error: invalid type conversion (cannot use type Tbyte as type Trune) convert1.go:77:12: error: invalid type conversion (cannot use type Tbyte as type Tint64) convert1.go:80:12: error: invalid type conversion convert1.go:82:13: error: invalid type conversion convert1.go:84:11: error: invalid type conversion (cannot use type Trune as type Tbyte) convert1.go:86:12: error: invalid type conversion (cannot use type Trune as type Tint64) convert1.go:88:6: error: invalid type conversion (cannot use type Tint64 as type string) convert1.go:89:12: error: invalid type conversion convert1.go:90:12: error: invalid type conversion convert1.go:92:13: error: invalid type conversion (cannot use type Tint64 as type Tstring) convert1.go:93:11: error: invalid type conversion (cannot use type Tint64 as type Tbyte) convert1.go:94:11: error: invalid type conversion (cannot use type Tint64 as type Trune) fixedbugs/bug195.go:9:21: error: interface contains embedded non-interface fixedbugs/bug195.go:12:21: error: interface contains embedded non-interface fixedbugs/bug195.go:15:15: error: interface contains embedded non-interface fixedbugs/bug195.go:18:2: error: invalid recursive interface fixedbugs/bug195.go:26:2: error: invalid recursive interface fixedbugs/bug195.go:22:2: error: invalid recursive interface fixedbugs/bug251.go:15:2: error: invalid recursive interface fixedbugs/bug251.go:11:2: error: invalid recursive interface fixedbugs/bug374.go:18:34: error: use of undefined type ‘xxxx’ fixedbugs/bug374.go:16:5: error: incompatible type in initialization (incompatible type for method ‘m’ (different number of parameters)) fixedbugs/bug383.go:11:2: error: expected boolean expression fixedbugs/bug383.go:12:2: error: expected boolean expression fixedbugs/bug386.go:10:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug386.go:12:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug388.go:12:10: error: invalid named/anonymous mix fixedbugs/bug388.go:17:19: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:22:9: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:27:10: error: expected type fixedbugs/bug388.go:32:9: error: expected type fixedbugs/bug388.go:23:14: error: reference to field ‘i’ in object which has no fields or methods fixedbugs/bug388.go:18:18: error: invalid use of type fixedbugs/bug389.go:12:5: error: incompatible type in initialization (different parameter types) fixedbugs/bug390.go:15:24: error: expected integer, floating, or complex type fixedbugs/bug394.go:10:1: error: expected declaration fixedbugs/bug397.go:12:2: error: incompatible type for element 2 key in map construction switch3.go:18:2: error: incompatible types in binary expression switch3.go:22:2: error: incompatible types in binary expression switch3.go:28:2: error: map can only be compared to nil switch3.go:35:2: error: slice can only be compared to nil switch3.go:42:2: error: func can only be compared to nil syntax/else.go:11:9: error: expected ‘if’ or ‘{’ typeswitch2.go:15:2: error: duplicate type in switch typeswitch2.go:19:2: error: duplicate type in switch typeswitch2.go:26:2: error: duplicate type in switch typeswitch2.go:40:9: error: ‘t’ declared and not used R=golang-dev, r CC=golang-dev https://golang.org/cl/5573073
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case s: // ERROR "mismatched types string and I|incompatible types"
}
switch s {
test: match gccgo error messages complit1.go:37:34: error: may only omit types within composite literals of slice, array, or map type complit1.go:38:19: error: may only omit types within composite literals of slice, array, or map type complit1.go:18:21: error: slice of unaddressable value complit1.go:19:10: error: slice of unaddressable value complit1.go:20:9: error: slice of unaddressable value convert1.go:28:13: error: invalid type conversion convert1.go:32:12: error: invalid type conversion (cannot use type string as type Tint64) convert1.go:36:12: error: invalid type conversion convert1.go:37:13: error: invalid type conversion convert1.go:40:11: error: invalid type conversion convert1.go:41:12: error: invalid type conversion convert1.go:44:12: error: invalid type conversion convert1.go:46:13: error: invalid type conversion convert1.go:48:11: error: invalid type conversion convert1.go:50:12: error: invalid type conversion convert1.go:52:6: error: invalid type conversion convert1.go:53:12: error: invalid type conversion convert1.go:54:12: error: invalid type conversion convert1.go:56:13: error: invalid type conversion convert1.go:57:11: error: invalid type conversion convert1.go:58:11: error: invalid type conversion convert1.go:64:13: error: invalid type conversion convert1.go:68:12: error: invalid type conversion (cannot use type Tstring as type Tint64) convert1.go:72:12: error: invalid type conversion convert1.go:73:13: error: invalid type conversion convert1.go:76:11: error: invalid type conversion (cannot use type Tbyte as type Trune) convert1.go:77:12: error: invalid type conversion (cannot use type Tbyte as type Tint64) convert1.go:80:12: error: invalid type conversion convert1.go:82:13: error: invalid type conversion convert1.go:84:11: error: invalid type conversion (cannot use type Trune as type Tbyte) convert1.go:86:12: error: invalid type conversion (cannot use type Trune as type Tint64) convert1.go:88:6: error: invalid type conversion (cannot use type Tint64 as type string) convert1.go:89:12: error: invalid type conversion convert1.go:90:12: error: invalid type conversion convert1.go:92:13: error: invalid type conversion (cannot use type Tint64 as type Tstring) convert1.go:93:11: error: invalid type conversion (cannot use type Tint64 as type Tbyte) convert1.go:94:11: error: invalid type conversion (cannot use type Tint64 as type Trune) fixedbugs/bug195.go:9:21: error: interface contains embedded non-interface fixedbugs/bug195.go:12:21: error: interface contains embedded non-interface fixedbugs/bug195.go:15:15: error: interface contains embedded non-interface fixedbugs/bug195.go:18:2: error: invalid recursive interface fixedbugs/bug195.go:26:2: error: invalid recursive interface fixedbugs/bug195.go:22:2: error: invalid recursive interface fixedbugs/bug251.go:15:2: error: invalid recursive interface fixedbugs/bug251.go:11:2: error: invalid recursive interface fixedbugs/bug374.go:18:34: error: use of undefined type ‘xxxx’ fixedbugs/bug374.go:16:5: error: incompatible type in initialization (incompatible type for method ‘m’ (different number of parameters)) fixedbugs/bug383.go:11:2: error: expected boolean expression fixedbugs/bug383.go:12:2: error: expected boolean expression fixedbugs/bug386.go:10:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug386.go:12:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug388.go:12:10: error: invalid named/anonymous mix fixedbugs/bug388.go:17:19: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:22:9: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:27:10: error: expected type fixedbugs/bug388.go:32:9: error: expected type fixedbugs/bug388.go:23:14: error: reference to field ‘i’ in object which has no fields or methods fixedbugs/bug388.go:18:18: error: invalid use of type fixedbugs/bug389.go:12:5: error: incompatible type in initialization (different parameter types) fixedbugs/bug390.go:15:24: error: expected integer, floating, or complex type fixedbugs/bug394.go:10:1: error: expected declaration fixedbugs/bug397.go:12:2: error: incompatible type for element 2 key in map construction switch3.go:18:2: error: incompatible types in binary expression switch3.go:22:2: error: incompatible types in binary expression switch3.go:28:2: error: map can only be compared to nil switch3.go:35:2: error: slice can only be compared to nil switch3.go:42:2: error: func can only be compared to nil syntax/else.go:11:9: error: expected ‘if’ or ‘{’ typeswitch2.go:15:2: error: duplicate type in switch typeswitch2.go:19:2: error: duplicate type in switch typeswitch2.go:26:2: error: duplicate type in switch typeswitch2.go:40:9: error: ‘t’ declared and not used R=golang-dev, r CC=golang-dev https://golang.org/cl/5573073
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case i: // ERROR "mismatched types I and string|incompatible types"
}
var m, m1 map[int]int
switch m {
case nil:
test: match gccgo error messages complit1.go:37:34: error: may only omit types within composite literals of slice, array, or map type complit1.go:38:19: error: may only omit types within composite literals of slice, array, or map type complit1.go:18:21: error: slice of unaddressable value complit1.go:19:10: error: slice of unaddressable value complit1.go:20:9: error: slice of unaddressable value convert1.go:28:13: error: invalid type conversion convert1.go:32:12: error: invalid type conversion (cannot use type string as type Tint64) convert1.go:36:12: error: invalid type conversion convert1.go:37:13: error: invalid type conversion convert1.go:40:11: error: invalid type conversion convert1.go:41:12: error: invalid type conversion convert1.go:44:12: error: invalid type conversion convert1.go:46:13: error: invalid type conversion convert1.go:48:11: error: invalid type conversion convert1.go:50:12: error: invalid type conversion convert1.go:52:6: error: invalid type conversion convert1.go:53:12: error: invalid type conversion convert1.go:54:12: error: invalid type conversion convert1.go:56:13: error: invalid type conversion convert1.go:57:11: error: invalid type conversion convert1.go:58:11: error: invalid type conversion convert1.go:64:13: error: invalid type conversion convert1.go:68:12: error: invalid type conversion (cannot use type Tstring as type Tint64) convert1.go:72:12: error: invalid type conversion convert1.go:73:13: error: invalid type conversion convert1.go:76:11: error: invalid type conversion (cannot use type Tbyte as type Trune) convert1.go:77:12: error: invalid type conversion (cannot use type Tbyte as type Tint64) convert1.go:80:12: error: invalid type conversion convert1.go:82:13: error: invalid type conversion convert1.go:84:11: error: invalid type conversion (cannot use type Trune as type Tbyte) convert1.go:86:12: error: invalid type conversion (cannot use type Trune as type Tint64) convert1.go:88:6: error: invalid type conversion (cannot use type Tint64 as type string) convert1.go:89:12: error: invalid type conversion convert1.go:90:12: error: invalid type conversion convert1.go:92:13: error: invalid type conversion (cannot use type Tint64 as type Tstring) convert1.go:93:11: error: invalid type conversion (cannot use type Tint64 as type Tbyte) convert1.go:94:11: error: invalid type conversion (cannot use type Tint64 as type Trune) fixedbugs/bug195.go:9:21: error: interface contains embedded non-interface fixedbugs/bug195.go:12:21: error: interface contains embedded non-interface fixedbugs/bug195.go:15:15: error: interface contains embedded non-interface fixedbugs/bug195.go:18:2: error: invalid recursive interface fixedbugs/bug195.go:26:2: error: invalid recursive interface fixedbugs/bug195.go:22:2: error: invalid recursive interface fixedbugs/bug251.go:15:2: error: invalid recursive interface fixedbugs/bug251.go:11:2: error: invalid recursive interface fixedbugs/bug374.go:18:34: error: use of undefined type ‘xxxx’ fixedbugs/bug374.go:16:5: error: incompatible type in initialization (incompatible type for method ‘m’ (different number of parameters)) fixedbugs/bug383.go:11:2: error: expected boolean expression fixedbugs/bug383.go:12:2: error: expected boolean expression fixedbugs/bug386.go:10:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug386.go:12:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug388.go:12:10: error: invalid named/anonymous mix fixedbugs/bug388.go:17:19: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:22:9: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:27:10: error: expected type fixedbugs/bug388.go:32:9: error: expected type fixedbugs/bug388.go:23:14: error: reference to field ‘i’ in object which has no fields or methods fixedbugs/bug388.go:18:18: error: invalid use of type fixedbugs/bug389.go:12:5: error: incompatible type in initialization (different parameter types) fixedbugs/bug390.go:15:24: error: expected integer, floating, or complex type fixedbugs/bug394.go:10:1: error: expected declaration fixedbugs/bug397.go:12:2: error: incompatible type for element 2 key in map construction switch3.go:18:2: error: incompatible types in binary expression switch3.go:22:2: error: incompatible types in binary expression switch3.go:28:2: error: map can only be compared to nil switch3.go:35:2: error: slice can only be compared to nil switch3.go:42:2: error: func can only be compared to nil syntax/else.go:11:9: error: expected ‘if’ or ‘{’ typeswitch2.go:15:2: error: duplicate type in switch typeswitch2.go:19:2: error: duplicate type in switch typeswitch2.go:26:2: error: duplicate type in switch typeswitch2.go:40:9: error: ‘t’ declared and not used R=golang-dev, r CC=golang-dev https://golang.org/cl/5573073
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case m1: // ERROR "can only compare map m to nil|map can only be compared to nil"
default:
}
var a, a1 []int
switch a {
case nil:
test: match gccgo error messages complit1.go:37:34: error: may only omit types within composite literals of slice, array, or map type complit1.go:38:19: error: may only omit types within composite literals of slice, array, or map type complit1.go:18:21: error: slice of unaddressable value complit1.go:19:10: error: slice of unaddressable value complit1.go:20:9: error: slice of unaddressable value convert1.go:28:13: error: invalid type conversion convert1.go:32:12: error: invalid type conversion (cannot use type string as type Tint64) convert1.go:36:12: error: invalid type conversion convert1.go:37:13: error: invalid type conversion convert1.go:40:11: error: invalid type conversion convert1.go:41:12: error: invalid type conversion convert1.go:44:12: error: invalid type conversion convert1.go:46:13: error: invalid type conversion convert1.go:48:11: error: invalid type conversion convert1.go:50:12: error: invalid type conversion convert1.go:52:6: error: invalid type conversion convert1.go:53:12: error: invalid type conversion convert1.go:54:12: error: invalid type conversion convert1.go:56:13: error: invalid type conversion convert1.go:57:11: error: invalid type conversion convert1.go:58:11: error: invalid type conversion convert1.go:64:13: error: invalid type conversion convert1.go:68:12: error: invalid type conversion (cannot use type Tstring as type Tint64) convert1.go:72:12: error: invalid type conversion convert1.go:73:13: error: invalid type conversion convert1.go:76:11: error: invalid type conversion (cannot use type Tbyte as type Trune) convert1.go:77:12: error: invalid type conversion (cannot use type Tbyte as type Tint64) convert1.go:80:12: error: invalid type conversion convert1.go:82:13: error: invalid type conversion convert1.go:84:11: error: invalid type conversion (cannot use type Trune as type Tbyte) convert1.go:86:12: error: invalid type conversion (cannot use type Trune as type Tint64) convert1.go:88:6: error: invalid type conversion (cannot use type Tint64 as type string) convert1.go:89:12: error: invalid type conversion convert1.go:90:12: error: invalid type conversion convert1.go:92:13: error: invalid type conversion (cannot use type Tint64 as type Tstring) convert1.go:93:11: error: invalid type conversion (cannot use type Tint64 as type Tbyte) convert1.go:94:11: error: invalid type conversion (cannot use type Tint64 as type Trune) fixedbugs/bug195.go:9:21: error: interface contains embedded non-interface fixedbugs/bug195.go:12:21: error: interface contains embedded non-interface fixedbugs/bug195.go:15:15: error: interface contains embedded non-interface fixedbugs/bug195.go:18:2: error: invalid recursive interface fixedbugs/bug195.go:26:2: error: invalid recursive interface fixedbugs/bug195.go:22:2: error: invalid recursive interface fixedbugs/bug251.go:15:2: error: invalid recursive interface fixedbugs/bug251.go:11:2: error: invalid recursive interface fixedbugs/bug374.go:18:34: error: use of undefined type ‘xxxx’ fixedbugs/bug374.go:16:5: error: incompatible type in initialization (incompatible type for method ‘m’ (different number of parameters)) fixedbugs/bug383.go:11:2: error: expected boolean expression fixedbugs/bug383.go:12:2: error: expected boolean expression fixedbugs/bug386.go:10:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug386.go:12:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug388.go:12:10: error: invalid named/anonymous mix fixedbugs/bug388.go:17:19: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:22:9: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:27:10: error: expected type fixedbugs/bug388.go:32:9: error: expected type fixedbugs/bug388.go:23:14: error: reference to field ‘i’ in object which has no fields or methods fixedbugs/bug388.go:18:18: error: invalid use of type fixedbugs/bug389.go:12:5: error: incompatible type in initialization (different parameter types) fixedbugs/bug390.go:15:24: error: expected integer, floating, or complex type fixedbugs/bug394.go:10:1: error: expected declaration fixedbugs/bug397.go:12:2: error: incompatible type for element 2 key in map construction switch3.go:18:2: error: incompatible types in binary expression switch3.go:22:2: error: incompatible types in binary expression switch3.go:28:2: error: map can only be compared to nil switch3.go:35:2: error: slice can only be compared to nil switch3.go:42:2: error: func can only be compared to nil syntax/else.go:11:9: error: expected ‘if’ or ‘{’ typeswitch2.go:15:2: error: duplicate type in switch typeswitch2.go:19:2: error: duplicate type in switch typeswitch2.go:26:2: error: duplicate type in switch typeswitch2.go:40:9: error: ‘t’ declared and not used R=golang-dev, r CC=golang-dev https://golang.org/cl/5573073
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case a1: // ERROR "can only compare slice a to nil|slice can only be compared to nil"
default:
}
var f, f1 func()
switch f {
case nil:
test: match gccgo error messages complit1.go:37:34: error: may only omit types within composite literals of slice, array, or map type complit1.go:38:19: error: may only omit types within composite literals of slice, array, or map type complit1.go:18:21: error: slice of unaddressable value complit1.go:19:10: error: slice of unaddressable value complit1.go:20:9: error: slice of unaddressable value convert1.go:28:13: error: invalid type conversion convert1.go:32:12: error: invalid type conversion (cannot use type string as type Tint64) convert1.go:36:12: error: invalid type conversion convert1.go:37:13: error: invalid type conversion convert1.go:40:11: error: invalid type conversion convert1.go:41:12: error: invalid type conversion convert1.go:44:12: error: invalid type conversion convert1.go:46:13: error: invalid type conversion convert1.go:48:11: error: invalid type conversion convert1.go:50:12: error: invalid type conversion convert1.go:52:6: error: invalid type conversion convert1.go:53:12: error: invalid type conversion convert1.go:54:12: error: invalid type conversion convert1.go:56:13: error: invalid type conversion convert1.go:57:11: error: invalid type conversion convert1.go:58:11: error: invalid type conversion convert1.go:64:13: error: invalid type conversion convert1.go:68:12: error: invalid type conversion (cannot use type Tstring as type Tint64) convert1.go:72:12: error: invalid type conversion convert1.go:73:13: error: invalid type conversion convert1.go:76:11: error: invalid type conversion (cannot use type Tbyte as type Trune) convert1.go:77:12: error: invalid type conversion (cannot use type Tbyte as type Tint64) convert1.go:80:12: error: invalid type conversion convert1.go:82:13: error: invalid type conversion convert1.go:84:11: error: invalid type conversion (cannot use type Trune as type Tbyte) convert1.go:86:12: error: invalid type conversion (cannot use type Trune as type Tint64) convert1.go:88:6: error: invalid type conversion (cannot use type Tint64 as type string) convert1.go:89:12: error: invalid type conversion convert1.go:90:12: error: invalid type conversion convert1.go:92:13: error: invalid type conversion (cannot use type Tint64 as type Tstring) convert1.go:93:11: error: invalid type conversion (cannot use type Tint64 as type Tbyte) convert1.go:94:11: error: invalid type conversion (cannot use type Tint64 as type Trune) fixedbugs/bug195.go:9:21: error: interface contains embedded non-interface fixedbugs/bug195.go:12:21: error: interface contains embedded non-interface fixedbugs/bug195.go:15:15: error: interface contains embedded non-interface fixedbugs/bug195.go:18:2: error: invalid recursive interface fixedbugs/bug195.go:26:2: error: invalid recursive interface fixedbugs/bug195.go:22:2: error: invalid recursive interface fixedbugs/bug251.go:15:2: error: invalid recursive interface fixedbugs/bug251.go:11:2: error: invalid recursive interface fixedbugs/bug374.go:18:34: error: use of undefined type ‘xxxx’ fixedbugs/bug374.go:16:5: error: incompatible type in initialization (incompatible type for method ‘m’ (different number of parameters)) fixedbugs/bug383.go:11:2: error: expected boolean expression fixedbugs/bug383.go:12:2: error: expected boolean expression fixedbugs/bug386.go:10:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug386.go:12:25: error: incompatible type for return value 1 (type has no methods) fixedbugs/bug388.go:12:10: error: invalid named/anonymous mix fixedbugs/bug388.go:17:19: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:22:9: error: non-name on left side of ‘:=’ fixedbugs/bug388.go:27:10: error: expected type fixedbugs/bug388.go:32:9: error: expected type fixedbugs/bug388.go:23:14: error: reference to field ‘i’ in object which has no fields or methods fixedbugs/bug388.go:18:18: error: invalid use of type fixedbugs/bug389.go:12:5: error: incompatible type in initialization (different parameter types) fixedbugs/bug390.go:15:24: error: expected integer, floating, or complex type fixedbugs/bug394.go:10:1: error: expected declaration fixedbugs/bug397.go:12:2: error: incompatible type for element 2 key in map construction switch3.go:18:2: error: incompatible types in binary expression switch3.go:22:2: error: incompatible types in binary expression switch3.go:28:2: error: map can only be compared to nil switch3.go:35:2: error: slice can only be compared to nil switch3.go:42:2: error: func can only be compared to nil syntax/else.go:11:9: error: expected ‘if’ or ‘{’ typeswitch2.go:15:2: error: duplicate type in switch typeswitch2.go:19:2: error: duplicate type in switch typeswitch2.go:26:2: error: duplicate type in switch typeswitch2.go:40:9: error: ‘t’ declared and not used R=golang-dev, r CC=golang-dev https://golang.org/cl/5573073
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case f1: // ERROR "can only compare func f to nil|func can only be compared to nil"
default:
}
var ar, ar1 [4]func()
switch ar { // ERROR "cannot switch on"
case ar1:
default:
}
var st, st1 struct{ f func() }
switch st { // ERROR "cannot switch on"
case st1:
}
}
func good() {
var i interface{}
var s string
switch i {
case s:
}
switch s {
case i:
}
}