289 lines
10 KiB
Objective-C
289 lines
10 KiB
Objective-C
// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s
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// # Flexible array member.
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// ## Instance variables only in interface.
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@interface LastIvar {
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char flexible[];
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}
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@end
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@interface NotLastIvar {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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// ## Instance variables in implementation.
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@interface LastIvarInImpl
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@end
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@implementation LastIvarInImpl {
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char flexible[]; // expected-warning {{field 'flexible' with variable sized type 'char []' is not visible to subclasses and can conflict with their instance variables}}
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}
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@end
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@interface NotLastIvarInImpl
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@end
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@implementation NotLastIvarInImpl {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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// expected-warning@-1 {{field 'flexible' with variable sized type 'char []' is not visible to subclasses and can conflict with their instance variables}}
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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@implementation NotLastIvarInImplWithoutInterface { // expected-warning {{cannot find interface declaration for 'NotLastIvarInImplWithoutInterface'}}
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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// expected-warning@-1 {{field 'flexible' with variable sized type 'char []' is not visible to subclasses and can conflict with their instance variables}}
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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@interface LastIvarInClass_OtherIvarInImpl {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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}
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@end
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@implementation LastIvarInClass_OtherIvarInImpl {
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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// ## Non-instance variables in implementation.
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@interface LastIvarInClass_UnrelatedVarInImpl {
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char flexible[];
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}
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@end
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@implementation LastIvarInClass_UnrelatedVarInImpl
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int nonIvar;
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@end
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// ## Instance variables in class extension.
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@interface LastIvarInExtension
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@end
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@interface LastIvarInExtension() {
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char flexible[]; // expected-warning {{field 'flexible' with variable sized type 'char []' is not visible to subclasses and can conflict with their instance variables}}
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}
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@end
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@interface NotLastIvarInExtension
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@end
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@interface NotLastIvarInExtension() {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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// expected-warning@-1 {{field 'flexible' with variable sized type 'char []' is not visible to subclasses and can conflict with their instance variables}}
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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@interface LastIvarInClass_OtherIvarInExtension {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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}
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@end
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@interface LastIvarInClass_OtherIvarInExtension() {
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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@interface LastIvarInExtension_OtherIvarInExtension
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@end
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@interface LastIvarInExtension_OtherIvarInExtension() {
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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@interface LastIvarInExtension_OtherIvarInExtension()
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// Extension without ivars to test we see through such extensions.
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@end
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@interface LastIvarInExtension_OtherIvarInExtension() {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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// expected-warning@-1 {{field 'flexible' with variable sized type 'char []' is not visible to subclasses and can conflict with their instance variables}}
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}
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@end
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@interface LastIvarInExtension_OtherIvarInImpl
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@end
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@interface LastIvarInExtension_OtherIvarInImpl() {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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// expected-warning@-1 {{field 'flexible' with variable sized type 'char []' is not visible to subclasses and can conflict with their instance variables}}
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}
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@end
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@implementation LastIvarInExtension_OtherIvarInImpl {
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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// ## Instance variables in named categories.
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@interface IvarInNamedCategory
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@end
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@interface IvarInNamedCategory(Category) {
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char flexible[]; // expected-error {{instance variables may not be placed in categories}}
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}
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@end
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// ## Synthesized instance variable.
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@interface LastIvarAndProperty {
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char _flexible[];
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}
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@property char flexible[]; // expected-error {{property cannot have array or function type 'char []'}}
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@end
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// ## Synthesize other instance variables.
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@interface LastIvar_ExplicitlyNamedPropertyBackingIvarPreceding {
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int _elementsCount;
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char flexible[];
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}
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@property int count;
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@end
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@implementation LastIvar_ExplicitlyNamedPropertyBackingIvarPreceding
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@synthesize count = _elementsCount;
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@end
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@interface LastIvar_ImplicitlyNamedPropertyBackingIvarPreceding {
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int count;
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char flexible[];
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}
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@property int count;
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@end
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@implementation LastIvar_ImplicitlyNamedPropertyBackingIvarPreceding
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@synthesize count;
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@end
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@interface NotLastIvar_ExplicitlyNamedPropertyBackingIvarLast {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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}
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@property int count;
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@end
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@implementation NotLastIvar_ExplicitlyNamedPropertyBackingIvarLast
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@synthesize count = _elementsCount; // expected-note {{next synthesized instance variable is here}}
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@end
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@interface NotLastIvar_ImplicitlyNamedPropertyBackingIvarLast {
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char flexible[]; // expected-error {{flexible array member 'flexible' with type 'char []' is not at the end of class}}
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}
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@property int count; // expected-note {{next synthesized instance variable is here}}
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@end
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@implementation NotLastIvar_ImplicitlyNamedPropertyBackingIvarLast
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// Test auto-synthesize.
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//@synthesize count;
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@end
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// # Variable sized types.
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struct Packet {
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unsigned int size;
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char data[];
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};
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// ## Instance variables only in interface.
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@interface LastStructIvar {
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struct Packet flexible;
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}
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@end
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@interface NotLastStructIvar {
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struct Packet flexible; // expected-error {{field 'flexible' with variable sized type 'struct Packet' is not at the end of class}}
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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// ## Instance variables in implementation.
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@interface LastStructIvarInImpl
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@end
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@implementation LastStructIvarInImpl {
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struct Packet flexible; // expected-warning {{field 'flexible' with variable sized type 'struct Packet' is not visible to subclasses and can conflict with their instance variables}}
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}
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@end
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@interface NotLastStructIvarInImpl
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@end
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@implementation NotLastStructIvarInImpl {
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struct Packet flexible; // expected-error {{field 'flexible' with variable sized type 'struct Packet' is not at the end of class}}
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// expected-warning@-1 {{field 'flexible' with variable sized type 'struct Packet' is not visible to subclasses and can conflict with their instance variables}}
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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@interface LastStructIvarInClass_OtherIvarInImpl {
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struct Packet flexible; // expected-error {{field 'flexible' with variable sized type 'struct Packet' is not at the end of class}}
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}
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@end
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@implementation LastStructIvarInClass_OtherIvarInImpl {
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int last; // expected-note {{next instance variable declaration is here}}
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}
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@end
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// ## Synthesized instance variable.
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@interface LastSynthesizeStructIvar
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@property int first;
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@property struct Packet flexible; // expected-error {{synthesized property with variable size type 'struct Packet' requires an existing instance variable}}
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@end
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@implementation LastSynthesizeStructIvar
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@end
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@interface NotLastSynthesizeStructIvar
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@property struct Packet flexible; // expected-error {{synthesized property with variable size type 'struct Packet' requires an existing instance variable}}
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@property int last;
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@end
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@implementation NotLastSynthesizeStructIvar
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@end
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@interface LastStructIvarWithExistingIvarAndSynthesizedProperty {
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struct Packet _flexible;
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}
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@property struct Packet flexible;
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@end
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@implementation LastStructIvarWithExistingIvarAndSynthesizedProperty
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@end
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// # Subclasses.
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@interface FlexibleArrayMemberBase {
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char flexible[]; // expected-note6 {{'flexible' declared here}}
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}
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@end
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@interface NoIvarAdditions : FlexibleArrayMemberBase
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@end
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@implementation NoIvarAdditions
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@end
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@interface AddedIvarInInterface : FlexibleArrayMemberBase {
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int last; // expected-warning {{field 'last' can overwrite instance variable 'flexible' with variable sized type 'char []' in superclass 'FlexibleArrayMemberBase'}}
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}
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@end
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@interface AddedIvarInImplementation : FlexibleArrayMemberBase
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@end
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@implementation AddedIvarInImplementation {
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int last; // expected-warning {{field 'last' can overwrite instance variable 'flexible' with variable sized type 'char []' in superclass 'FlexibleArrayMemberBase'}}
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}
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@end
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@interface AddedIvarInExtension : FlexibleArrayMemberBase
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@end
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@interface AddedIvarInExtension() {
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int last; // expected-warning {{field 'last' can overwrite instance variable 'flexible' with variable sized type 'char []' in superclass 'FlexibleArrayMemberBase'}}
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}
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@end
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@interface SynthesizedIvar : FlexibleArrayMemberBase
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@property int count;
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@end
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@implementation SynthesizedIvar
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@synthesize count; // expected-warning {{field 'count' can overwrite instance variable 'flexible' with variable sized type 'char []' in superclass 'FlexibleArrayMemberBase'}}
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@end
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@interface WarnInSubclassOnlyOnce : FlexibleArrayMemberBase {
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int last; // expected-warning {{field 'last' can overwrite instance variable 'flexible' with variable sized type 'char []' in superclass 'FlexibleArrayMemberBase'}}
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}
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@end
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@interface WarnInSubclassOnlyOnce() {
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int laster;
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}
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@end
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@implementation WarnInSubclassOnlyOnce {
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int lastest;
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}
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@end
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@interface AddedIvarInSubSubClass : NoIvarAdditions {
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int last; // expected-warning {{field 'last' can overwrite instance variable 'flexible' with variable sized type 'char []' in superclass 'FlexibleArrayMemberBase'}}
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}
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@end
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